On 1821 Nov ? at UT 19:00 an unknown observer (in England) reported "Bright spots on the moon. (if early phase, date would be 26th-29th) 4 other instances mentioned. Fixed streaks of light in dark part -- first one stated as moving. The cameron 1978 catalog ID=94 and weight=2. The ALPO/BAA weight=1.
On 1988 Nov 15 at 10:07-10:40 UT P. Jean (Outremont, Quebec, Canada, 4" refractor?) saw to the SE of Eudocus (18E, ~43N) a luminescent area just over on the night side of the terminator - it was cone shapes and coppery in colour. Cameron comments that maybe it was a very low sun angle effect and she has seen something similar, but on the bright side of the terminator. Jean then goes onto comment that at 10:25UT a very dark line was seen south of the cone i.e. east of the terminator. A sketch was provided and P.Foley commented that the cone did not correspond to any terrain. Cameron 2006 Catalog Extension ID=339 and weight=3. ALPO/BAA weight=2.
2004 Dec 18 UT 02:00 F. Serio (Houston, TX, USA) may have imaged aperiod of brightening in this crater in images - though Darling comments that it could be a Registax issue. ALPO/BAA weight=1.
CCD images were captured in white light that seemed to show that the relative brightness between Aristarchus or Pytheas differed considerably to what they were to be one night earlier on 2008 Nov 25. Either Pytheas was brighter tonight or Aristarchus was darker. Which feature, and which night, the abnormality occurred on is uncertain. One possible explanation might be a brightness gradient from glare from the sunlit side affecting the image contrast quality of the CCD images for relative photometric measurements. This TLP is being assigned a weight of 3 for now.
CCD images were captured in white light that seemed to show that the relative brightness between Aristarchus or Pytheas differed considerably to what they were one night earlier on 2008 Nov 25. Either Pytheas was brighter tonight or Aristarchus was darker. Which feature, and which night, the abnormality occurred on is uncertain. One possible explanation might be a brightness gradient from glare from the sunlit side affecting the image contrast quality of the CCD images for relative photometric measurements. This TLP is being assigned a weight of 3 for now.
Theophilus 1966 Jan 28 UTC 01:24-03:45 Observed by Cross & Ariola (Whittier, CA, USA, 19" reflector, x300, S=6-4, T=4, "3 red patches appearing and dissappearing at different times. Obscurred at sunrise on it. Later, red patch appeared on the floor." NASA catalog weight=5. NASA catalog ID #920. ALPO/BAA weight=3.
Ross D 1967 Dec 8 UT 02:30-02:40 Observer: Harris (Tucson?, AZ?), colourless bright area SW of Ross D with repeated condensations that appeared then dissipated in thirty seconds to a minute. ALPO/BAA weight=1.
Proclus 2003 February 8,2003 UTC 02:09-03:07 Observed by Gray (Winnemucca, NV, USA, 152mm F9 refractor Seeing 6-7, Transparency 6 305x) "Blinked Proclus with Wratten Red 25 and Blue 38A filters. Features seen through the red filter were basically seen with the same degree of clarity as in white light, in the case of sunlit walls, maybe a little bit better in the red. With the Blue 38A filter only the brightest part of the crater walls (north end) was visible-the rest of Proclus was dark shadow. At 3:07UT I compared the brightest parts of Proclus with Censorinus and Dionysius. The brightest parts of Proclus and Dionysius were comparable. Censorinus was much less bright than either of the above craters-the halo and crater were much faded over its usual brilliant appearance. Both Censorinus and Censorinus A were visible as distinct craters at 114x. The black shadow covering the east 40% of Proclus last night had broken up into three patches separated from each other by lighter bands. These were confined to the east crater wall. Only the central patch was black, the other two were considerably lighter. Running along the southwest edge of the crater floor of the crater floor appeared to be a hill to the north of which was a less elevated plateau. As the observing period progressed part of the brilliantly illuminated north crater wall developed a darker area which gradually became more prominent. As the sun is getting higher I would expect shadows and dark areas to diminish-what was happening here is unknown. However, this is not an unusual event for this part of Proclus". The ALPO/BAA weight=2.
2018 Jun 19 UT 04:00 G. Cross, using a 60" f/16 Cass, Strehl > 0.9, under descent seeing conditions, found that the ghost crater was not visible - was this an obscuration or just normal apeparance? ALPO/BAA weight=1.
On 1891 Nov 30 at UT23:00 Observer: Fallows Observing site: Cape Town, South Africa. Cameron 1978 catalog describes the event as: Bright star- like point. Cameron 1978 catalog ID=93 and weight=3. ALPO/BAA weight=2.
On 1969 Nov 16 at UT 16:43-19:22 Dall'Ara (Switzerland, 4"? reflector), Stucchi (Switzerland, 12" reflector) observed in Aristarchus intermittent pulsations - Cameron speculates atmopsheric and also mentions the Apollo 12 watch. The Cameron 1978 catalog ID=1211 and weight=3. The ALPO/BAA weight=2.
Maskelyne 1969 Nov 16 UTC 16:28-17:10 Observed by Persson (Hvidore, Denmark, 3" refractor) "Brightening & obscur. (Apollo 12 watch)." NASA catalog weight=2 (low). NASA catalog ID #1210.
Alphonsus 1965 Apr 08 UTC 20:00? Observed by Hoffman (Germany?) "Saw variable shining bright lights". NASA catalog weight=1 (very low). NASA catalog ID #873.
Aristarchus 1965 Apr 08 UTC 20:00? Observed by Hoffman (Germany?) "Saw variable shining bright lights". NASA catalog weight=1 (very low). NASA catalog ID #873.
Censorinus 1965 Apr 08 UTC 20:00? Observed by Hopmann (Czecholovakia?) "Green flash or brightening (date correct ? written 8-4-65. First taken as American convention, thus as Aug. 4, but now think it was in European convention of day first then month)." NASA catalog weight=2 (low). NASA catalog ID #873a.
Hyginius N 1965 Apr 08 UTC 20:00? Observed by Hoffman (Germany?) "Saw variable shining bright lights". NASA catalog weight=1 (very low). NASA catalog ID #873.
Linne 1965 Apr 08 UTC 20:00? Observed by Hoffman (Germany?) "Saw variable shining bright lights". NASA catalog weight=1 (very low). NASA catalog ID #873.
Proclus 1965 Apr 08 UTC 20:00? Observed by Hoffman (Germany?) "Saw variable shining bright lights". NASA catalog weight=1 (very low). NASA catalog ID #873.
On 1987 Nov 28 at UT 04:16-04:45 D. Louderback (South Bend, WI, USA, 3"reflector, x150, S=E) observed that the Promontorium Agarum plateau was rather dull and grayish - usually it was "tannish" "even > sunlit areas, & twin craters at his point A which are always > spots on plateau. At 0420 whole plateau sank into complete darkness, hard to distinguish from mare plain. albedo dropped to 5 from 6.8 reading. Nearby plain was normal 5 so phenomena had not spread to it. At 0424 Cape started to reappear to albedo 6 until 0445, when it returned to normal, but not sharply defined - like through haze. Detail better in red than in blue filter, sketches. The Cameron 2006 catalog ID=315 and the weight=4. The ALPO/BAA weight=3.
In 1878 Oct 03 at UT 20:00 an Unknown observer noted that Hyginus Nova had the most conspicuous of all appearances, and there was no trace of it on 1878 Oct 04. The Cameron 1978 catalog ID=201 and weight=3. The ALPO/BAA weight=2.
Einmart 1913 Jan 15 UTC 00:12 Observed by Pickering (Cambridge, Massachusets, 11" refractor, x330) "Spreading apron of white material like a sea of cloud. Not seen again after this date. Crater had been brightest area on moon between it & limb -- albedo 9. on Aug 5 albedo = 6. His atlas shows it bright. It grew dull after this date. He gave col. as 117? but FQ was at 1/15/?? at 10h" - note the quality of the NASA microfische is very bad and probably some of this text has been incorrectly read?. NASA catalog weight=3 (average). NASA catalog ID # 342.
Mare Crisium 1989 Jan 14 UTC 19:15 Observed by Hedley-Robinson (Devon, UK, 5" Coude, Antoniadi II seeing, x150) "Floor blinks indicating colour - used a Moon blink device". 2 areas of the floor were affected, The first one was on the far west of Mare Crisium, next to Proclus crater. The second area was in the NNW, but outside the edge of the mare. Other features elsewhere checked but gave no colour reaction. Peters (UK) though did detect colour elsewhere, but his seeing was III- IV. The Cameron 2006 catalog ID=344 and the weight=5. The ALPO/BAA weight=3.
1987 Feb 06 UTC 02:35 Observed by Darling (Sun Praire, Wisconsin, USA, 12.5" Newtonian x342) "I was using a 12.5 f5 Newtonian reflector with a 9mm eyepiece and 2x Barlow with no filters. I had been observing other features on the Moon when I had panned to the area where the sunrise was taking place on Mount Piton. The mountain peak looked like a shimmering block of ice with a phosphorescence luminescence cloud around the peak. What was really interesting was the shaft of light streaming across the Lunar Maria that appeared like a cone and it came to a point near Mount Piton. The Mountain had the appearance of mother of pearl and the luster or glow that surround the peak only lasted about 20 minutes." The Cameron 2006 catalog ID=296 and gthe weight=4. the ALPO/BAA weight=3.
Lubbock 1973 Nov 02 UT 22:10-23:59 Observed by R.Hill (Greensboro, N. Carolina, USA) "Color in crater changed fro. gray to brownish -- strong enough change to be noted. Never saw anything like this 7 yrs. of observing". NASA catalog weight=3. NASA catalog ID #1379. ALPO/BAA weight=3.
Fauchier of Marseilles, France, seeing=good - fair and the Moon at a high altitude, saw two lights on the Moon brighter than any others during similar circumstances. They had colour. These had not been seen before and he ruled out cromatic aberation. Cameron 1978 catalog ID=249 and weight=3. ALPO/BAA weight=2.
2004 Dec 20 UT 02:51-03:26 R. Gray (Winumma, USA) noted that the crater had exceptional brightness to nimbus surrounding it. ALPO/BAA weight=1.
On 1995 Jul 06 at UT 03:22-03:57 R. Spellman (Los Angeles, USA found that the floor of Proclus appeared to darken slightly through a blue filter. The ALPO/BAA weight=2. Source of this observation came from Spellman's web site.
Proclus 1972 Oct 15 UT 20:48 Observed by Hopp (13.25E, 52.5N, 75mm refractor) "Bright flash at the NW wall but poor seeing." T=3, S=5. Ref: Hilbrecht & Kuveler Moon & Planets (1984) Vol 30, pp53-61. ALPO/BAA weight=1.
In 1878 Oct 04 at UT 20:00 an Unknown observer noted that Hyginus Nova could not be seen, whereas the night before the crater had the most conspicuous of all appearances. The Cameron 1978 catalog ID=201 and weight=3. The ALPO/BAA weight=2.
Williams of the UK, on 1892 Sep 20 at Moon's age 8.4 days, noticed a spot that had been seen on the 21st and 23rd of the same year with abnormal brightness. The spot was near Picard. Williams comments the spot was "nearly as large but a little fainter than Picard, This observation was reported in the Astronomical Register of the Royal Astronomical Society and is not included in the Cameron catalogs. It is one of many measurements of the brightness of this spot for different illumination angles and is one of three outlying brightness points spotted on a graph by Willaims. The ALPO/BAA weight=3.
On 1916 Sep 05 at UT 19:30 Markov (Russia) observed in Plato light on shadow of the bands at the bottom of the crater. The Cameron 1978 catalog ID=364 and weight=3. The ALPO/BAA weight=2.
Copernicus 1955 Jul 28 UT 20:20 Observed by Firsoff (Somerset, England, 6.5" reflector x200) "Great brilliance of the terraces in E(IAU?) wall system(?) gets specular refl. (he gave 0820UT, but must have meant 2020" NASA catalog weight=4 (high). NASA catalog No. #600.
Atlas 1966 Dec 21 UT 17:10 Observed by Andre (Belgium, 3" refractor) "Bright spot on SE part of floor, not seen in photo on 12/18/66" NASA catalog weight=2 (low). NASA catalog ID #1003.
On 1980 May 23 at UT21:14-21:55 J.H. Robinson (Teighmouth, Devon, UK, 12" reflector, seeing II-III) could see Aristarchus in blue and clear filters, but not in red light. Robinson saw some variability in this effect with time. Cameron 2006 catalog ID=96 and weight=3. ALPO/BAA weight=2.
On 1980 May 23 at UT22:30 (P.W. Foley (Kent, UK, 10" reflector, seeing II) described Aristarchus as a "blue luminous patch", but it was too faint to obtain a CED brightness measurement. Cameron 2006 catalog ID= 96 and weight=3. ALPO/BAA weight=2.
On 1980 May 23 at UT21:14-22:18 G. Blair (Bridge of Weir, Scotland, UK, 216mm reflector, seeing II-IV) found a red tinge along the western wall of Coperncius, perhaps 32km in length. This was invisible in a blue-green Wratten 44a filter, but was unmistakble in a red Wratten 25 filter. Could have been spurious colour - but no other regiosn were affected. The ALPO/BAA weight=2.
On 1980 May 23 at UT 21:14-21:18 Marco Petek (Porto Alegre, Brazil) saw in the region of Littrow and an area of dark mare south west from Littrow to Argaeus, abnormal darkness, and a rapid change of form. He also saw a shadow extending south east from Campanus opposite to the Sun - however Foley thinks this is normal. Cameron 2006 catalog ID=96 and weight=0 or 1. ALPO/BAA weight=1.
On 1980 May 25 at UT 22:18 G. Blair (Bridge of Weir, Scotland, 216mm reflector, seeing II-IV) suspected a short sharp flash, white in colour north of Tycho's north wall. Nothing more seen. ALPO/BAA weight=1.
2012 Sep 24 UT 22:00-23:00 Copernicus. E. Horner (Salisbury, UK, 15cm reflector) observed a prominent red arc where the sunlit part of the interior wall met the shadow. Sometimes the arc was 1/4 the way around the interior, and sometimes half of the way around. Telescope moved, but the red arc stayed where it was. Eyepieces change, but the effect remained. Other parts of the Moon checked, but no red seen. There were however splashes of green e.g. Longomontanus on the terminator, elsewhere further inland from the termionator, and little splashes of green on Mare Frigoras - but lasting a brief time. The red colour was as strong as a red LED and the green similar to that of the northern lights. The observer's husband was asked to independetly check Copernicus and remarked that he could see a little bit of green at the top and some red near the bottom, along the line of the internal shadow. Although there were checks for red elsewhere on the Moon and none were seen, the Moon was starting to get low and it is typical of spurious colour in a few respects. Therefore the ALPO/BAA weight=1 for safety.
Mons la Hire 1972 Nov 15 UT 09:45-10:18 M.Geisel (Brisbane, Australia, 12.5" f/8 reflector, x90) discovered the TLP, P. Anderson (9.5" reflector) independently confirmed that the TLP had an effect in his Moon Blink device - but the effect (suspected that the blink was caused by the extreme nrightness of the mountain?) was weak and thought it not worth further investigation. Photographs taken by Anderson. Geisel believes the effect to be real and states that the area remained sharp and clear throughout. ALPO/BAA weight=2.
Proclus 1969 Nov 18 UT 20:00? Observed by Classen (Pulnitz, Czechoslovakia, 8" refractor) "Brightened, exceeded normal. Brightness is monitored relative to Censorinus. (started July, 1969) Obs. thinks all bright craters are variable. (Apollo 12 watch)." NASA catalog weight=2 (low). NASA catalog ID #1216.
On 1995 Jul 07 at UT 04:22 R. Spellman (Los Angeles, CA, USA) noted that the floor of Copernicus was slightly darker in blue light. The ALPO/BAA weight=1. This report came from R. Spellman's web site.
On 1995 Jul 07 at UT 04:22 R. Spellman (Los Angeles, CA, USA) noted that the inside of Bodin darkened in blue light and also the floor was darker in white light than it was the previous day. The ALPO/BAA weight=1. This report came from R. Spellman's web site.
On 1995 Jul 07 at 04:22UT R. Spellman (Los Angeles, CA, USA) noted that the floor of Proclus looked slightly darker in blue light. The ALPO/BAA weight=1.
Copernicus 1969 Nov 18 UT 21:10-21:11 Observed by Hedervari (Budapest, Hungary, 3.5" refractor) "Yellowish-red stripe on inner W. wall (chrom. aberr.? Apollo 12 watch)." NASA catalog weight=2. NASA catalog ID No. 1217. ALPO/BAA weight=1.
Goldschmidt 1969 Nov 18 UT 21:59 Observed by Brandi (Wald, Switzerland, 6" reflector x90) "Brightening -- photo. (the author, WSC, cannot verify LTP on film. Its brightness similar to other features at same term. dist. Shadow is anomolous if real -- very narrow streak beside it & beyond main shadow (Apollo 12 watch)." NASA catalog weight=5 (very high). NASA catalog ID #1218.
Plato 1878 Oct 05 UT 21:40 Observed by Klein (Cologne, Germany, 6?" refractor) "Fog in W. part of crater. Faint shimmer like thin white cloud" NASA catalog weight=4. NASA catalog ID #203. ALPO/BAA weight=3.
On 1960 Aug? 01 at UT 22:00? an unknown observer detected that Vitello was illuminated -it should have been in shadow? Cameron says that if several days before sunrise then the date could have been July through to December, with August 1st most likely, and ancilary data is therefore given for this date. The Cameron 1978 catalog ID=729 and weight=1. The ALPO/BAA weight=1.
2007 Oct 20 UT 17:31 A.Pink (Basinkstoke, UK) images a flash on the dark size of the Moon near to Vitello. The ALPO/BAA weight=1.
On 1982 Mar 04 at UT 20:00 M.C. Cook (Frimley, UK) found Censorinus (4.6) to be brighter than Proclus (4.0) in white light. The Cameron 2006 catalog ID=164 and weight=4. The ALPO/BAA weight=1.
On 1982 Mar 04 at UT 20:00 M.C. Cook (Frimley, UK) found Proclus (4.0) to be fainter than Censorinus (4.6) in white light. The Cameron 2006 catalog ID=164 and weight=4. The ALPO/BAA weight=2.
On 1989 Jan 16 at UT 20:00 G. North (Herstmonceux, UK, 30" reflector) observed Toricelli B to change in brightness and found colour in it. A 10 minute exposure spectrum was taken (Cameron does not have information on whether anything unusual was recoeded) before clouds obscured the Moon. Normally a 30 minute exposure would be needed. The Cameron 2006 catalog ID=345 and the weight=3. The ALPO/BAA weight=3.
Agrippa and vicinity 1878 Dec 04 UT 20:00? Observed by Capron (France?) "Odd, misty look as if vapor were in or about them" NASA catalog weight=3 (average). NASA catalog ID #209.
Alphonsus 1966 Apr 01 UT(?) 03:00-03:20 Observed by Jenning, Harris (Coral Estates, CA, USA, 12" reflector) "Red patch from c.p. to W. wall (no confirm. from Corralitos obs. moon blink device & obs. at that time)" NASA catalog weight=3. NASA catalog ID #924. ALPO/BAA weight=2.
Observed by G.H. Johnstone of Albuquerque, NM, USA on 1954 Nov 05 UT 20:00 (according to Cameron), but 02:00-04:00 according to the original observation and at colongitudes 34.7 to 35.7 deg. 4" reflector, x150 used. The obsewrver reported that the western part (about 1/3rd of the interior) was pitch black with shadow. However there was a zone about as wide, or perhaps only a fourth of the total width that was distinctly a lighter bluish shade, almost like twilight. The shadows of the peaks on the western edge of the rim were clearly seen crossing this bluish shadowed area. Then this area ended sharply, and the farside was bathed in light from the rising sun. The shadows of the peak were sharply defined across the twilight zone, and the edge of the pitch black shadow was easily defined but not as sharp as the darker shadows crossing the the blue twilight zone. The observer checked other craters but did not see this condition in any of them - they all had the abrupt division between black and white that we would normally expect to see. Cameron 1978 catalog ID=579 and weight=2. Reference 1962 edition of ALPO's Journal: The Stolling Astronomer. ALPO/BAA weight=3.
Censorinus 1969 Nov 19 UT 1922 Observed by Brandli (Wald, Switzerland, 6" reflector, x90) "Brightening -- photo, (the author, WBC, cannot verify from photo. It is brighter, but so are Proc. & Dionys. -- it being between. i.e. Proc. > Censor. > Dionys. Apollo 12 watch)." NASA catalog weight=5 (very high). NASA catalog ID #1220. ALPO/BAA weight=1.
Plato 1970 Dec 08 UT 18:00-23:59 UT Observed by Fitton (Oldham, England, 8.5" refkector, S=VG) "All surrounding detailperfect, but barely a trace of floor detail. A suggestion of 2 or 3 white spots including central A seen only on one examination out of five. "sector" beginning to show. ALPO/BAA weight=1.
Plato 1870 May 10 UTC 22:00 Observed by Birt (England) "Extraordinary display of lights. Says not effect of sunlight" NASA catalog weight=4 (high). NASA catalog ID #167.
P. Moore at 21:10 found the southern wall (and ontothe southern floor) of the crater to be indistinct. Elsewhere in the crater everything was sharp. The effect was still seen at 21:42UT, but less strong. A check was made for colour with aq Moonblink device, but none was seen. There was still a trace of this effect at 21:44UT, although detail was now becoming visible. By 21:48UT vertical streaks were seen crossing the floor from the obscuration area and these were more visible in the red filter and not in the blue. Cameron comments that undefined patches on the floor of Plato are not normal. By 21:55UT some craterlets on the floor started to become visible and the TLP for Moore ended by UT22:23. P.Foley was alerted by Moore and saw a "amssive dense obsecuration on the south wall, south floor and south outer glacis to the Mare". Foley noted that by 21:50UT the effect was fading and finished by 22:03UT. Foley reported an orange translucent haze covering half of the floor, but floor craterlets could be seen on and off - however his atmospheric seeing conditions were IV. At 22:00 UT Foley reported the floor close to the north wall to be "milky or misty". No detail was visible at 21:15UT and variability in the floor continued until 23:10UT. Hedly-Robinson was aleted at 21:35UT and found no difference between red and blue views of the area, however he did find that the south rim was indistinct although this effect had lessened by 22:00 UT and was normal by 22:17UT. M. Mobberly saw a white spot on the floor at 21:20 UT, whereas he normally would have expected to see craterlets. Mobberly was alerted at 21:40 UT and took some colour photos. He also made sketches that showed variability in the floor and dark lines and patches in the north west corner. However the altitude of the Moon was low. Cameron mentions that two of the photos show loss of detail at the south wall and beyond.and also a change in the floor markings.The north wall at 21:50UT was strangely reddish (didn't think this was spurious colour). The rest of the wall was sharp at 22:20UT through a yellow filter. Large bright patch in the centre and rest of the floor was apparently of the same shading as Mare Imbrium. The above notes are based upon the Cameron 2006 catalog extension TLP ID 145 and weight=4. ALPO/BAA weight=3.
Piton 1969 Nov 19 UT 21:15-22:00 Observed by Baum (England, 4.5" refractor) "Traces of cloudiness on E. slope at 2115h. Increased at 2150h in extent & brightness. Spread onto plain. Summit & shadow in W. part sharp & clear. (Apollo 12 watch)." NASA catalog weight=2. NASA catalog ID #1221. ALPO/BAA weight=2.
C. Brook of Plymouth UK, using a 4" refractor x216, noticed at UT 20:10 dark patches coming and going (in terms of visibility) on the floor of Plato. Occasional views of the central cratelet (seen as a white spot) were glimpsed. The dark patches seen lasted about 1-2 seconds before fading out during each visibility cycle. Teneriff Mountains were checked but no sign of seeing effects that might explain the dark floor patches. By 20:26UT the dark patch effect was fading and by 20:31UT floor detail was visible. Observations ceased at UT 20:34. Seeing conditions were II and the Moon was at a high altitude. Other observers were alerted but came on-line after the effect had finished. ALPO/BAA weight=2.
At approximately 18:43UT observer noticed that Censorinus, and its bright apron, appeared particularly brighter than normal. There was some spurious colour present - but just a redness along the southernmost extent of the apron visible; could not detect any blue along the northern edge however, he did do not suspect the colour to be anomalous. A re-examination at 18:51UT revealed that the crater had faded and was seen to fade visibly in real time to normal levels (over about a minute) by 18:53UT. Other features remained constant and so too did the apparent spurious colour.
Ramsden 1999 May 25 UT 20:57-21:22 Observed by Brook (Plymouth, UK, 4" refractor, x216, seeing II-III) "Bright spot on W wall - brightness variation seen. - At the start it was bright, then it faded, and towards the end of the observation it was starting to brighten again". BAA Lunar Section observation. ALPO/BAA weight=1.
U.K. observers: G. North and P. Foley, both saw a wisp of blue associated with this crater. Cameron 2006 catalog extension ID=209 and weight=4. ALPO/BAA weight=3.
Daniell 1979 Jun 05 UT 20:15-21:10 Observed by Price (Camberley, England, 152mm reflector x64 and x128, seeing III, transparency good) "Obscuration seen" BAA Lunar Section report.
Daniell 1979 Jun 05 UT 20:15-23:00 Observed by Price (Camberley, England, 152mm reflector x64 and x128, seeing III, transparency good) observed that Posidonius lacked sharpness.
Gassendi 1969 Nov 20 UT 17:06-17:15 Observed by Duckworth (Manchester, England, 8" refractor x250) Faint Pinkish Obscuration on floor. Event in progress at 1706 - left telescope at 1715 to report it, but TLP gone upon return. Gassendi was normal from from 1734-1822h. NASA catalog weight=4. NASA catalog ID #1223. ALPO/BAA weight=3.
Plato 1980 May 25 UT 21:33-22:54 Observed by North (Seaford, UK, seeing III-IV, 460mm Newtonian) Definite strong reddish glow along NNW border, definitely much stronger than spurious colouration and always visible when telescope moved in RA and Dec to eliminate possible chromatic aberation effects in the eyepiece. Effect ended by 21:54 UT. BAA Lunar Section Report. ALPO/BAA weight=2.
Hyginus N 1944 Apr 04 UT 20:00? Observed by Wilkins (Kent, England, 15" reflector) "Darker than usual. S. edge of great crater valley was bordered by a narrow dark band for 13km along its length" NASA catalog weight=4 (high). NASA catalog ID #490.
Peice A (Swift=IAU name?) 1927 May 12 UT 22:03 Observed by Wilkins (England, 15" reflector) "Complete obscuration of crater. Saw no trace of it. It was vis. May 11 & faint on May 13. 3x in 1948 Moore saw whole area misty gray & devoid of detail, whereas surroundings were sharp & clear. Birt also found it invis. at times in late 1800's" NASA catalog weight=4. NASA catalog ID #394. ALPO/BAA weight=3.
Gassendi 1969 Nov 20 UT 19:30-19:45 Observed by Becker (Holland, 4" refractor) "Curious small shadow from NW (ast. ?) wall. (Apollo 12 watch)" NASA catalog weight=1 (very low). NASA catalog ID #1224.
Aristarchus 1969 Nov 20 UT 19:45-20:05 Observed by Becker (Holland, 4" refractor) "Sharp whiteness on inner W. (ast. ?) side (Apollo 12 watch)" NASA catalog weight=1 (very low). NASA catalog ID #1224.
SE of Ross D 1965 Mar 14 UT 07:40 Observed by Cross (Whittier, CA, USA, 12" reflector) "Crater wall partially obscured; bright" NASA catalog weight=3 (average). NASA catalog ID #872.
Observer noted a bright spot on the interior west wall that seemed brighter than what they would have expected. unfortunately the precise time of this observation was not recorded so the moon-rise and midnight UT values are used to place a limit on the time of observation. Images by Shaw taken at UT 1754, 18:45 and 23:13 do not exhibit the effect.
Plato 1870 May 11 UTC 22:00 Observed by Birt (England) "Extraordinary display of lights. Says not effect of sunlight" NASA catalog weight=4 (high). NASA catalog ID #167.
Aristarchus visible just past terminator. West wall was brighter than normal. Bright flash seen in/on NW wall - apparently in the same place as Pedler's May 17th sketch. Cameron 2006 extension catalog ID=146 and weight=4. Observed by M. Price of Camberley, Surrey, UK with a 6" reflector and a Moon Blink device. Seeing=III.
Plato 1981 Jun 13 UT 20:48-21:08 Observed by Price (Camberley, England, 152mm reflector, seeing III) Possible Moon blink (red) seen on north wall. Also the craterlets on the floor could be seen despite the observing conditions not being optimal. BAA Lunar Section observation. Cameron 2006 extension catalog ID=146 and weight=4. ALPO/BAA weight=3.
Censorinus 1981 Apr 15 UT 22:15-23:10 M. Cook (Frimley, UK), using a 12" reflector,found Censorinus to be glowing exceedingly bright and was brighter than Proclus. It dulled later, but was still brighter than Proclus. Censorinus was also slightly brighter in blue than in red light. Cameron 2006 catalog extension ID=130 and weight=3. ALPO/BAA weight=1.
On 1984 Jan 14 at UT 20:00 P. Moore (Selsey, UK) observed that Aristarchus was brighter than it normally is at sunrise. No quantitative measurements were made though. The Cameron 2006 catalog ID=238 and weight=3. The ALPO/BAA weight=1.
Aristarchus-Herodotus 1968 Dec 31 UT 03:30-03:45 Observed by Taboada (Mexico) "Terminator between the two was diminishing in brightness over edge of Herod. at 0345, 2 darker spots seen over same place. (alerted by Middlehurst for tidal predict.?)" NASA catalog weight=1 (very low). NASA catalog ID #1112.
On 1968 Dec 31 at UT 03:30-03:45 Taboada (Mexico) observed the terminator between Aristarchus and Herodotus was diminishing in brightness at 03:45UT over the edge of Herodotus. Two darker spots were seen over same place. Alerted by Middlehurst for tidal predict? The Cameron 1978 catalog ID=1112 and weight=1. The ALPO/BAA weight=1.
Torricelli B 2005 Jan 21 UT 21:21-21:43 Observed by North (Norfolk, UK, 20cm reflector, x64, x128, Seeing IV, Transparency, moderate) "Torricelli B appeared rather dull with a prominent dark halo of a strongly bluish tint. The halo extends a few sec of arc beyond the crater. At 21:21-21:43 crater was varying in brightness but this may have been due to the seeing? By 21:42 the dark halo was gone. By 21:44- 21:49 UT the crater was brighter and more normal in brightness than before. By 22:17 UT all was normal. The variations in brightness were also seen by Cook (Mundesley, UK). Observations by Carbognani (Itlay) 21:20-23:10 failed to find any variations in brightness. Nor did Amato (CT, USA) from 23:00-23:15 UT."
On 1978 May 18 at UT20:45-21:53 J.D. Cook (Frimley, UK, 12" reflector, x240) observed Promitorium Laplace to have visually a brown colour - though no Moon Blink (red and blue filters) effect was detected. Cameron comments that this is probably a subjective effect - also others have reported something similar at times. The Cameron 2006 catalog ID=30 and weight=3. The ALPO/BAA weight=1.
Plato 1998 Jul 05 P. Moore (Selsey, UK, 15" reflector, x200- x400, seeing II/III) comments that he is puzzled why the floor of Plato, which is light gray in shade, looks completely blank tonight. The ALPO/BAA weight=1.
Barker's Quadrangle (Capuanus) 26W, 34S 1949 Feb 9 UT 20:00? Observed by Moore (England, 12" reflector) :Quadrangle not seen, apparently misty. (quad. in Capuanus? see Wilkins & Moore, The Moon, p124)" NASA catalog ID=514, weight=4. ALPO/BAA weight=3..
M. Cook of Frimley, UK, noticed Torricelli B to have a blue tinge inside and outside. No colour had been noticed earlier on 19-21 Mar. Cameron reports also in her catalog that the halo around Torricelli B had lost its brilliance as seen on 29th Mar. Cameron 2006 catalog extension ID=210 and weight=5 - apparently being confirmed by Marshall, Mobberley and Foley. ALPO/BAA weight=3.
Torricelli B 2005 Jan 22 UT 01:00 Observed by Serio (Houston, TX, USA, 6" Cassegrain, x150 and x180, Seeing 3, high deck of Cirrus clouds) "Torricelli B hard to make out in the videos taken, but images taken through cloud. A check on the image received by the coordinator shows that Torricelli B is in fact visible, but perhaps not very bright. A later observational sequence of images by Raul Salvo (Montevideo, Uraguay UT 03:15-03:23) showed similarly that Torricelli B was dark, and there was some brightness variability although the background setting on these was low" An ALPO report.
Kepler 1954 Nov 07 UTC 23:20 Observed by Lugo (Caracus, Venezula) "Luminous pts. (MBMW say "bright pt.; just outside E.wall). NASA catalog weight=3 (average). NASA catalog ID #580.
Aristarchus 1972 Oct 19 UT 17:55-18:05 Observed by Gabriel (Wettern, Belg. 4" refractor, x166, S=E), Hitchens (Stamine Locks, Eng., 8.5" reflector, S=F), Peters (Kent, Eng., 10" relector), Amery (Reading, Emg. 10?" reflector), Flynn (england, 12" reflector) "At 17:55h noted bluish-purple color area just N. of Aris. & it reached just over N. wall, lasted 2 min. At 1800h color noted again, but not as brilliant & gone at 1801h. Seen again at 1804h & now was on E. (ast. ?) wall, lasting M 1min. Sure of its reality but not of lunar origin. All gone at 1805h. Hitchens noted a very bright spot on W. (IAU?) wall between 2 prominent bands. Blue darkening in W#38 filter, neg. in W#8,25,58 & integrated light. Other areas gave similar but lesser effects. May be due to damp geletin. (Moore thinks not LTP but many obs. have rep't blue in Aris.) Others obs. later (2100, 2215-2300, 2305h) & noted nothing unusual." NASA catalog weight=2 (low). NASA catalog ID #1346.
On 1993 Sep 28 at UT 04:30-06:10 S.Beaumont (Cambridge, UK)observed that the north east edge of Herodotus appeared as a "highland area spilling over into" the Cobra's Head border or "overlook". The shadow on the elevation was contiguous with a similar shadow over the Cobra's Head "like a darkening of the terrain. Shadow appears softer diffused without sharp bounds of most Lunar shadows. sketch. S. edge of crater started to appear at 0615". The Cameron 1978 catalog ID=468 and the weight=2. The ALPO/BAA weight=1 as the date or UT are wrong.
Plato 1972 Oct 19 UT 20:10 Observed by Taylor, Phillips, Ford, Kennedy (Dundee, Scot. 10" refractor) "Taylor noted a slight blink on NW wall. Ford said it was neg. Phillips was not sure. Taylor returned to telescope & no blink. Kennedy reported neg." NASA catalog weight=1 (very low). NASA catalog ID #1347.
Foley, Kent, UK noted that the floor was slate blue-grey with no colour seen elsewhere. 12" reflector used, seeing=II. Cameron 2006 extension catalog ID 131 and weight=1. ALPO/BAA weight=1.
Plato 1870 May 12 UTC 22:00 Observed by Birt (England) "Extraordinary display of lights. Says not effect of sunlight" However an article by Nigel Logshaw in the Feb 2014 LSC suggests that it was probably just normal fine scale spots and streaks on the floor of the crater. NASA catalog weight=4. ALPO/BAA weight= 1. NASA catalog ID #167.
Plato 1986 Dec 13 UT 20:30 Observed by A. Cook (Frimley, UK, seeing III) North East quadrant of Plato the crater was blurred and ill-defined. Also no craterlets visible anywhere on the floor of Plato until the central craterlet was just glimpsed later at 23:00-23:45, though seeing now III-IV (cirrus at times in the sky). At this later time the NE rim was less blurred than before. ALPO/BAA weight=1.
Cobra Head 1955 Sep 28 UTC 23:00 Observed by Bestwick (England? 6?" reflector x240) "Diffused brown patch of smoke or vapor, almost obscured -- appeared over plain for a short distance."NASA catalog weight=3. NASA catalog ID #612.
Foley (Kent, UK) saw the west wall dull and stongly coloured. Moore (Sussex, UK) saw the wall as normal. However Cameron points out that Foley (Kent, UK) is a lot more Blue/UV sensitive than Moore. Mosely (Covington, UK) at 22:10 UT noticed a brightening on the East wall and at 01:10-01:25 UT suspected that the interior had a weak yellow-green cast to it. Cook (Frimley, UK) states that orange colour was within the interior crater, but green beyond the east rim at the 9 O'Clock and the south east corner to floor blue/mauvre beyond the northern rim NW/WSW. Foley sstates that orange and blue/mauvre might be spurious colour, but green one cannot get this way. Cameon suggests chromatic aberatons as a possibility but thinks that the observers concerned were experienced enough to recognize this if it were the cause. Cameron 2006 catalog extension ID=239 and weight=0. Moore used a 15?" refletor and Foley used a 12" refletor. Mosely experienced II seeing and good transparency. Cook had III seeing and also good transparency. P. Grego made an observation this night too. The ALPO/BAA weight=2.
Herodotus 1969 Jan 01 UT 03:15 Observed by Taboada (Mexico) "Brightness in edge of crater dimmed & a heavy darkness was noted thru course of cleft (Schroter's Valley?). (alerted for tidal predict.?)"NASA catalog weight=1. NASA catalog ID # 1113. ALPO/BAA weight=1.
Plato 1981 Jun 14 UT 21:58 Observed by Foley (Kent, England, 11.75" Newtonian, Seeing III, Transparency Good) "Obscuration Seen" BAA Lunar Section Observation. ALPO/BAA weight=2.
On 2016 Jul 17 UT 03:49 P.Zeller (ALPO, Indianapolis, IN, USA) imaged a pseudo-peak with shadow on the floor of Herodotus, however the image scale and quality of this colour image were not great and the observer suspects that it might be an imaging artefact. ALPO/BAA weight=1.
P. Foley of Kent, UK, using a 12" reflector, seeing=III-II, noticed that initially that the crater was pretty dull and that the floor was a slate blue-gray in colour at 22:45UT. A noticeable green spot inside the crater on the south east appeared at 22:25UT and vanished at 00:50UT. Cameron notes that one doesn't get green with spurious colour. Crater Extinction brightness measurements were made at 22:00 UT (reading=2.8) and at 23:45UT (reading=3.7). The crater dropped in brightness from 3.7 to 2.8 at 23:50UT and remained lower until 3.0 at 23:50-03:15 UT. A graph was produced and showed Proclus and Censorinus at similar brightnesses, but Aristarchus variable. The Earthshine was 0.3. Cameron 2006 Extension catalog ID=31 and weight=5. ALPO/BAA weight=3.
Johnson, of Des Moines, Iowa, USA, using a 7" reflector and an 8" refractor, saw a bight streak. The observer looked later, but it was no longer visible. Cameron thinks that it might have been a reflection from the wall. Cameron 1978 catalog ID=423 and weight=1. ALPO/BAA weight=1.
D. Darling of (Sun Praire, WI, USA, using a 12.5" reflector at x150, noticed a hint of red? colour on the south west rim of Aristarchus. Brightness measurements were normal for Aristarchus and Herodotus. No colour seen elsewhere e.g. Prom. LaPlace. The colour on Aristarchus had gone by 01:15UT. Cameron 2006 catalog extension ID=414 and weight=3. ALPO/BAA weight=3.
A fleeting faint reddish patch was seen in Gassendi at 21:15UT. This observation has an ALPO/BAA weight of 2.
Rays of(?) (in?) Herodotus 1955 Oct 28 UTC 18:30 Observed by Kozyrev (Crimea, Russia, 50" reflector, spectragraph) "Spectrum 3934A (K of Ca). 3964 (H of Ca) change in luminosity. 13% in H, 19% in K, 2% in H, 3% in K. in photo-line-depth method" NASA catalog weight=5 (very high). NASA catalog ID #622. ALPO/BAA weight=5.
Aristarchus 1975 Sep 18 UT 21:00? Observed by Foley (Kent, England, 12" reflector) "Deep blue-viol. spot in NW (IAU?) interior corner." NASA catalog weight=3. NASA catalog ID #1414. ALPO/BAA weight=3.
Aristarchus 1969 Nov 22 UT 18:20-21:13 Observed by D. Cutts (Chester, Eng., 8.5" reflector, x200), Moore (Sussex, Eng., 12" reflector x425), Miles (Coventry, Eng. 5" refractor), Delaye and Jourdran (Marseilles, Fr., 8" reflector) "Pulsating patch on W. wall between 2 radial bands. Faded by 2000h. Returned to normal. (Cutts). Miles saw strong pink in whole interior at 2112h. Strong blink. No blink there at 2210-2212h. Gass., Grim., & Plato were neg. Delaye & Joudan photog. it as very bright. Moore got neg. results at 2135. (confirm. of activity?, Apollo 12 watch)." NASA catalog weight=5. NASA catalog ID #1226. ALPO/BAA weight=3.
Aristarchus 1989 Oct 13 UTC 21:00 Observed by Cook (Frimley, Surrey, UK, 20cm reflector (visual and video)) "Aristarchus had what appeared to be a outline of a ghost crater on it's eastern side - quite large and bright". Cameron 2006 extended catalog TLP ID No=378 and weight=5. ALPO/BAA weight=3.
Plato 1870 May 13 UT 22:00? Observed by Pratt (---), Elger (Liverpool, England), (Gledhill (Brighton, England) "Extraordinary display of lights. 27 seen by Pratt, 28 by Elger, only 4 by Gledhill. (independ. confirm. ?" NASA catalog weight=5 (very good) NASA catalog ID #168. A bit more of a detailed report is as follows: "Upon the 13th of May, 1870, there was an "extraordinary display," according to Birt: 27 lights were seen by Pratt, and 28 by Elger, but only 4 by Gledhill, in Brighton. Atmospheric conditions may have made this difference, or the lights may have run up and down a scale from 4 to 28. As to independence of sunlight, Pratt says (Rept. B.A., 1871-88), at to this display, that only the fixed, charted points so shone, and that other parts of the crater were not illuminated, as they would have been to an incidence common throughout.(30) In Pratt's opinion, and, I think, in the opinion of the other observers, these lights were volcanic." ALPO/BAA weight=4.
Mobberley of Suffolk, UK, and using a 14" reflector and seeing=I-II saw yellowish/brown streaks within Aristarchus. A sketch indicates that these extended from a region on the east floor to the north west corner, and then finally onto the bands on the west wall. Cameron 2006 extension catalog ID=132 and weight=4. ALPO/BAA weight=1.
Plato 1874 Jan 01 UT 20:00? Observed by Pratt (England?) "Unusual appearance" NASA catalog weight=1. NASA catalog ID # 183. ALPO/BAA weight=1.
1982 Mar 08 Daniell UT 22:49-22:57 P.Madej (Hudersfield, UK) - A colour and brightness anomaly was seen a TLP alert was put out. Cameron 2006 catalog extension weight=165 and weight=3. ALPO/BAA weight=2.
"Brightening in blue filter, 1st for seconds, later for mins". NASA catalog weight=4 (high). NASA catalog ID #574.
Plato 1971 Nov 01 UT 19:35-20:35 Observed by Kidd (S.Shields, UK 16" reflector, S=G), Kirsopp (UK), Fitton (Lancashire, UK, 8" reflector x200) "NW (IAU?) rim, small area of obscur. & bright spot adjacent to it. Was normal at 2035h. Kirsopp confirmed. Fitton saw nothing unusual in blink patrol. (blink device detects color rather than brightness)" NASA catalog weight=4. NASA catalog ID #1318. ALPO/BAA weight=1.
Manilius 1939 Jul 30 UT 06:00 Observed by Haas? (NM?, USA, 12?" reflector) "Dark area in S. part wad I=3.7 comp. with #449. Cond. were similar. (phase same. real difference?). (normal here?)"
On 1992 Oct 10 at 18:57-19:04 UT I.S.Brukhanov (of Minsk, Belarus, using a 6" refractor x40 and x98) saw a star like point inside Plato crater of similar brightness to the central peak of Alphonsus. The event lasted 90 seconds before weakening and vanishing completely at 19:04UT. Cameron 2006 catalog extension ID=455 and weight=3. ALPO/BAA weight=3.
Aristarchus area 1955 Sep 30 UTC 20:45 Observed by Firsoff (Somerset, England, 6.5" reflector, x200) "Area showed a westward yellow smear, looked darkish in red, indicating presence of green." NASA catalog weight=4 (high). NASA catalog ID #614. ALPO/BAA weight=3.
On 1981 Apr 18 at UT 19:50-22:10 M. Mobberley (Suffolk, UK, using a 14" reflector, seeing poor and transparency poor) observed faint-yellow streaks still visible, but less prominent. Cameron mentions that Bartlett noticed this colour, but in the south floor of Aristarchus. Cameron 2006 catalog ID=133 and weight=3. ALPO/BAA weight=2.
Aristarchus 1972 Oct 21 UT 2:10-22:45 observed by Schnuchal (52.5N, 13.25E, 600mm f/11.7 reflector, T=1, S=3) "Bright spot with maximum intensity at 22:10 UT diminution in brightness well observable" - Hilbrecht and Kuveler, Earth, Moon & Planets, 30 (1984),p53-61. ALPO/BAA weight=1.
Aristarchus-Herodotus 1969 Jan 03 UT 03:20-03:50 Observed by Taboada (Mexico) "Brightness between craters dimmed at 0345. Change in colouration in N. part of Aris. -- gray & slightly pinkish. Became more remarkable at 0350 in almost all the extension of the cleft, (Sch. Vall. ?)." NASA catalog weight=3. NASA catalog ID #1114. ALPO/BAA weight=3.
Plato 1967 Feb 24 UT 04:21 Observed by Kelsey (Riverside, CA, USA, 8" reflector?) Using an Eng. moon blink device, discovered red brightest on NNE wall summit - duration 10min. NASA catalog weight=3. NASA catalog ID #1017. ALPO/BAA weight=3.
G.Amery (Reading, UK, seeing=II) saw a brilliant white rim, bands and central peak. There was also a clearly seen white glare like feature over the ESE wall that had a direction opposite to the crater interior bands. Cameron states that Foley says that this is usual. High CED brightness readings obtained. M.Cook of Frimley, UK, took CED measurements at 23:35UT and recorded a brightness of > 4.9. Reported a reversal of spurious colour - Cameron suspects that this was a local effect. No spurious colour noticed by anyone else. However the brightness of the crater was confirmed by other observers. Mosely suspected a brightness change on the inner east wall at a relative position of 8 O'Clock. Cameron 2006 extension catalog ID=259 and weight=4. ALPO/BAA weight=3.
Aristarchus 1973 Sep 11 UTC 20:48-21:06 observed by Pasternak (53deg 20'N, 7deg 30'E, 75mm reflector T=1, S=3) "reddish colours at the S of Aristarchus from 20.48-21.00 U.T., area spread to the region E of the crater at 20.57 U.T., disappeared there at 21.04U.T., no colours after 21.06 U.T." - Hilbrecht and Kuveler, Earth, Moon & Planets, 30 (1984), p53-61. ALPO/BAA weight=1.
On 2009 Sep 03 at UT23:15-23:17 B.Gibbs took some hand held digital SLR images of the Moon (Sky conditions clear). Four images were taken at: 23:14:53, 23:15:59, 23:16:05 and 23:17:23 (uncertainty +/-15 sec offset from actual UT). These showed some apparent variation in the brightness of Aristarchus. However there are ways toexplain this through image motion blur when the images were taken. However we cannot be absoultely sure. The ALPO/BAA weight=1.
Aristarchus 1961 Jun 27/28 23:00?-01:00? Observed by Granger & Ring (Italy). "Enhancement of Spectrum in UV at CaII similar to May obs." NASA catalog weight=5. NASA catalog ID #741. ALPO/BAA weight=3.
Enhancement of spectrum in UV and CaI recorded on photoelectric spectrometer scans by Grainger and Ring in Italy. Effect seen on Aristarchus and a ray near Bessel (approx 17E, 22N). Cameron 1978 catalog ID=740 and weight=5. ALPO weight=3.
Aristarchus vicinity 1842 Oct 18 UT 23:00? Observed by Gruithuisen (Munich, Germany) "Mingling of all colors in small spots in W. & NW of crater. (interposition of year dates? was # 101 --1842 prob. correct." NASA catalog weight=4. NASA catalog ID #121. ALPO/BAA weight=3.
Proclus 1955 Aug 03 UTC 04:13-04:40 Observed by Bartlett (Baltimore, MD, USA, 5" reflector, x180, S=5, T=5) "Floor blackish 2 intensity but in green filter assumed a distinctly mottled or flocculent appearance -- seen only in green. Neither blue nor red had any effect, but on previous eve. green light had not produced such an appearance." NASA catalog weight=4 (good). NASA catalog ID #602. The ALPO/BAA weight=3.
Aristarchus 1976 Jun 12 UT 05:21 Observed by Bartlett (Baltimore. MD. USA, 4.5" reflector, 40-225x, S=5, T=3, "Deep viol. tinge in N. 1/2 of nimbus. Faint blue-viol. radiance (gas ?) on E. - NE wall along crest. No color elsewhere, nor on plateau m." NASA catalog weight=4 (high). NASA catalog ID #1435.
F. Graham took some photos of the Cobras Head and found a blue cloud about 50 km in diameter and scattering light - Cameron says that this indicates high density. Darling found the Cobra's Head obscure and variable "clear and bright to diffused". Cameron was alerted observed (02:40UT) variations with periods of approximately 30 seconds, and thought that she could see a red tinge on the east rim of Aristarchus - checks elsewhere found no other colours. Darling found that a blue filter enhanced the effect and a red filter made it disappear. There was a blink at 02:55UT but no blink in the Cobra's Head, which looked fuzzy and lacking in detail. The effect was confirmed by Weier, who also saw two dark spots in the Cobra Head in blue but not in red light. The brightness of the Cobras Head was 6.0, Herodotus floor 5.5, NW wall 7.5, South wall, 7.0, Aristarchus south wall 9.0, west wall 9.0, south wall 7.0, East wall 8.0, and the central peak 10.0. Observer details were as follows: Darling (Sun Praire, WI, USA, 12.5" reflector, x159, S=9/10). D. Weier (Sun Praire, WI, USA, 12.5" reflector, x159, S= 9/10), W. Cameron (Sedona, AZ, USA, 8" reflector x110 and x220, T=6 and S=6) F. Graham (E.Pittsburgh, PA, USA, 7" refractor, thin haze). Cameron 2006 catalog ID=415 and weight=5. ALPO/BAA weight=4.
On 1897 Oct 10 at UT 19:00 Pickering (Cambridge, Mass. USA, 15" refractor?) observed in Shroter's valley and the vicinity, "Variations in vapor col. change in direction of cloud rising from F is marked (time est. fr. given colon.)" The Cameron 1978 catalog ID=292 and the weight=3. The ALPO/BAA weight=2.
Archimedes 1940 Jun 20 UT 07:30 Observed by Haas (NM, USA, 12?" reflector) "NE wall (outer) had I=2.5 on this nite but 5.0 on Aug. 18 (see #471 -- both same phase so real diff. 2.5 normal?)" NASA weight=4. NASA ID No. #467. ALPO/BAA weight=2.
Near Censorinus 1964 Apr 26 UT 20:00? Observed by Hopmann (Czchoslovakia?) "Surface brightening somewhat similar to Kopal and Rackham in #779" NASA catalog weight=3 (average). NASA catalog ID #810.
Aristarchus-Herodotus 1969 Jan 04 UT 03:00-03:45 Observed by Taboada (Mexico) & Corralitos Observatory (Organ Pass, NM, USA, 24" reflector + Moon Blink) "Brightness increased slightly around Herod. & cleft (S.V?) became darker than previous day. The dark gray & pink formed yellowish at 0345h in whole region of Aris. Bluing around crater in Corralitos MB (photos?) (confirm. of activity at Aris.?)" NASA catalog weight=5. NASA catalog ID #1115. ALPO/BAA weight=3.
Aristarchus-Herodotus 1969 Jan 04 UT 03:00-03:45 Observed by Taboada (Mexico) & Corralitos Observatory (Organ Pass, NM, USA, 24" reflector + Moon Blink) "Brightness increased slightly around Herod. & cleft (S.V?) became darker than previous day. The dark gray & pink formed yellowish at 0345h in whole region of Aris. Bluing around crater in Corralitos MB (photos?) (confirm. of activity at Aris.?)" NASA catalog weight=5. NASA catalog ID #1115. ALPO/BAA weight=1.
On 1988 May 11 (UT 20:30-20:55) C. Brook (Plymouth, UK, 60mm refractor, x28) found Aristarchus to be brighter than he would have expected. Compared to Proclus and Tycho. He observed from 20:55-22:38 and found it to be normal in brightness over this time. The ALPO/BAA weight=1.
Aristarchus 1973 Nov 10 UTC 20:00? Observed by Coates (England, 8" reflector x200, Moon at gigh altitude above horizon). "Attracted to crater because of an orange hue extending towards Herod. Has seen this at other times. Thinks not a LTP, but actual color on ground."NASA catalog weight=2 (low). NASA catalog ID #1381.
Observed by Bartlett (Batimore, MD, USA, S=4, T=5) "E.wall? blue glare. He was uncertain @it. Couln't focus it. Herodotus unaffected." NASA catalog weight=4. NASA catalog ID 581. ALPO/BAA weight=2.
Aristarchus was not normal, but all the following features were: Mare Crisium, Proclus, Sinus Iridium, Grimaldi, and Tycho. Observed by Mellor and Fitton, UK. Observer notes that Aristarchus is brighter than Tycho when normal. Estimated variation was 25%. However the Moon was low and the Moon was yellow. Despite this the observer decided that the effect was real. Cameron 2006 extension catalog ID=32 and weight=2. ALPO/BAA weight=1.
P Moore, Selsey, Sussex, UK, used a 5" x250 scope and between 23:50UT on Jul 1st 1977 and 00:10UT on Jul 2nd 1977 observed Aristarchus. The south wall of the crater was reddish, extending down to the outer south east wall (IAU). However seeing was no better than III-IV and he was 99% sure that the colour was spurious. His report was submitted only in case any other observers reported something similar. ALPO/BAA weight=1.
Proclus 1958 Aug 30 UT 06:30-06:45 Observed by Bartlett (Baltimore, MD, USA, 4" reflector, x240, S=6, T=5) "Proc. Q. a bright spot on NE rim apparently a crater presented a very abnormal aspect. Extraordinarily large & at least 9 deg bright -- like EWBS on Aris. This spot is subject to large unexplained variations. At 97 deg col. in July, Q was also 9 deg bright but very small. At col.96 deg, 5 in May '58, col.99deg in Feb.'50, & 96 deg in Nov. '55 it was not seen at all. Assoc. with tonite was a distinct blue glare on NE rim, extending for short dist. & @ 2x as far as S." NASA catalog weight=4 (high). NASA catalog ID #894.
Aristarchus 1970 Jan 23 UT 07:00? Observed by Thomas, Rogers, Corralitos Observatory (Organ Pass, NM, USA, 24" reflector, Moon blink) "Bluing around the crater -- vis. in monitor but not photographed due to clouds" NASA catalog weight=4 (high). NASA catalog ID #1233
On 1955 Oct 02 at UT 05:30-05:55 Bartlett (Baltimore, MD, USA, 3.5" reflector, x100, S=7, T=5) observed the following in Aristarchus crater: "Viol. gl. on E, NE rim, over EWBS resembled a viol. mist. Crater itself was hazy, could not get a sharp focus". The Cameron 1978 catalog ID=615 and weight=4. The ALPO/BAA weight=2.
Mobberley noticed that Torricelli B was bright and had an even brighter spot on the inner north wall. The observation was made from UT19:45- 21:40 using visual and video techniques. There was also a bright region NNE of Toricelli B, that was noticed. Foley examined the video and found that the crater faded in brightness over time and also the bright area to the NNE was not as bright on video as had been seen visually. Foley speculates that because the CCD camera was sesnitive to the near IR that maybe the spot was blue?. Foley observed from 21:12-21:21UT and also saw the bright spot on the inner north wall - but saw a blue halo around the crater. Response in blue filter, darkening over whole region. Brightness measures with a crater extinction device (CED) indicated that the crater was 80-85% the brightness of Censorinus. There was a bright area NNE of the region. M. Cook observed 22:10- 22:16UT (15cm reflector and seeing III-IV) and also saw that the crater was very bright indeed with a spot NNE of the region (same position as 28/28 1985 observation) - suspected that the crater might have been brighter than Censorinus, but judgement effected by seeing. In a blue filter the crater dulled leaving the bright spot prominent (but only during a good moment of seeing) - therefore had some suspicion of seeing effects. At 01:00-01:04UT M. Cook used a 12" reflector on the area, but the seeing was even worse - but did manage a check of the brightness of Torricelli B to Censorinus and now made it one quarter of that of Censorinus and no sign of the crater dimming in the blue as had been seen earlier in the 6" refletor. A. Cook (Frimley, seeing V) at 21:15UT (Dec 27) thought that Torricelli B looked normal and saw no colour. At Dec 28 at UT 00:02-00:25 A. Cook obtained some CCD images through red+IR (Wratten 25) and IR (Wratten 87) but found no colour differences, though there was a very slight hint that a brightness fade may have occurred between those two observing times. Note that this report does not have an entry in the Cameron 2006 Extension Catalog. The ALPO/BAA weight=4.
W.Humboldt 1897 Dec 09 UTC 23:00? Observed by Goodacre (Crouch End, England, 12" reflector) "Shadow anomaly. Chocolate penumbral shade edging black shadow on E. wall." NASA catalog weight=3 (average). NASA catalog ID #296.
Cobra Head 1955 Oct 31 UTC 19:00 Observed by Milligan (England?) "Dark blue obscuration" NASA catalog weight=3 (average). NASA catalog ID 624.
On 1984 Feb 17 at 19:45-22:20UT P. Madej noticed colour in Aristarchus and telephoned the BAA Lunar Secton TLP network. Mosely at 21:15UT observed that Aristarchus was both bright and fuzzy - there was some spurios color (red on south and blue on the north) but this was replaced by violet. By 21:30UT (transparency=fair) the centre of the crater was bluish and the west wall creamy white. the north and south walls were brilliant white. By 22:00-22:30 UT the seeing had improved and the crater looked unusual - now the centre was violet and the west wall duller, off-white. By 05:35UT the crater was difficult to define according to Cook - 4 bands could be seen under II seeing and the north rim was fuzzy and less bright than the east wall (this was hazy). P. Moore observed that the crater was normal at 04:00UT. Cameron 2006 catalog extension ID=242 and weight=3. ALPO/BAA weight=2.
On 1984 Feb 17 at 19:45-22:20UT P. Madej (England, seeing=III- IV, x50)noticed that the crater Reinhold had a blood red spot on the northern terraces, at the base of the inner wall in a summit crater on the last of a crater chain or ridge descending from the top to floor". Cameron 2006 catalog extension ID=242 and weight=3. ALPO/BAA weight=3.
Aristarchus 1976 Aug 11 06:44 Observed by Bartlett (Baltimore, MD, USA, 4.5" reflector, 45-300x, S=4-3, T=4) "Pale viol. radiance (gas?) on plateau m. Dark viol. tinge on nimbus. C.p.=10 deg walls=8deg, & all of floor=8 deg. W.wall out of focus due to haziness (gas?)." NASA catalog weight=4 (high). NASA catalog ID #1441.
Copernicus 1975 Jul 24 UT 22:52 Observed by Robinson (Teignmouth, England, 10" ? reflector or 4" refractor?) "Copernicus indistinct in red and blue filters" NASA catalog weight=3 (average). NASA catalog ID #1409.
Fracastorius 1975 Jul 24 UT 22:52 Observed by Robinson (Teignmouth, England, 10" ? reflector or 4" refractor?) "Fracastorius had a blink (red or blue?)" NASA catalog weight=3 (average). NASA catalog ID #1409.
Tycho 1975 Jul 24 UT 22:52 Observed by Robinson (Teignmouth, England, 10" ? reflector or 4" refractor?) "Tycho indistinct in red and blue filters" NASA catalog weight=3 (average). NASA catalog ID #1409.
Alphazen Alpha 1972 Oct 23 UT 22:10?-22:13? (Stoke-on-Trent, UK, 21cm Newtonian, x217, seeing very good). Flickering colours seen on the north field of Alhazen Alpha mountain. Above UTs estimated by the observer, but the duration of the effect was 3 minutes. Colouration centred on the hills that run north to south between Mare Anguis and Mare Crisium. The colour alternated from east to west about 2 or 3 times per second. The colour was not apparent to the north or south, or indeed on any other features. Telescope field of view moved, but effect stayed in the same place on the Moon. Moon't terminator scanned for 15 minutes afterwards, but the effect did not recur. The colour seen was mostly red, with a band of orange, and a strip of yellow nearest the hills, the proportions being 6:2:1. The bands seemed to arc up steep above the Moon's surface and flatten out over the mare surface either side of the hill features. No filters were used in the observation. Observer suspects some kind of diffraction spectrum to explain the larger dispersion in the red end of the spectrum. ALPO/BAA weight=3.
On 1996 Jul 31 at 22:40UT P. Moore (Selsey, UK, 15" reflector, x300) noticed a lack of detail in the Cape Agarum area - he would normally have expected to have seen some craterlets. However he would not rate this observation much because the seeing was only III and he does not think that it was an obscuration. However just in case he wanted to record this report in the archives. ALPO/BAA weight=1.
Schroter's Valley: Cobra Head 1824 Nov 08 UTC 00:00? Observed by Gruithuisen (Munich, Germany) "Mingling of all colors in small spots. Described a violet glimmer near Cobra Head & plateau that spreads; starts just after sunrise. Cameron 1978 catalog weight=4 and catalog ID=103. The ALPO/BAA catalog weight=3.
Proclus 1973 Nov 11 UT 20:40-23:05 Observed by Savill (Cambridge, England, 12" refractor, x100?), Young (Yorks, England), Pedler (Bristol, England, 6" reflector?), Livesey (Scotland). "At 100x showed a bright spot in S.part of crater. At 300x was vis. but power too high. In 8-in refr. at 170x, at 2055h 2 spots present. Confirmed by Young. Seeing was improving. At 2104h in 12-in refr. at 260x the lower spot seemed distinctly enlarged & vaporous. Decided it was due to poor seeing. Later the 2 spots were better defined & separated but lower moved away fr. larger one & they seemed more separated than earlier. Obs. ended at 2305h when they decided it was not an LTP. but was 2 craters instead of humps. There were neg. repts. from others at the same time. (there are no craters in Proclus)." NASA catalog weight=2. NASA catalog ID # 1382. ALPO/BAA weight=1.
Plato 1870 Mar 19 UT 00:00? Observed by Gledhill? (halifax, England, 9" refractor) "Same group (of craters) as in Feb. illuminated. (if phase same as Apr. 1970 then date is Mar 19" NASA catalog weight=2 (low). NASA catalog ID #165.
On 2006 Jan 16 at 05:44UT T. Bakowski (Orchard Park, NY, USA) observed a round dark object in 1 of 21 frames from a camera. The exposure was 1/250th sec. Seeing conditions were bad. The dark spot is east of Mons Vinogradov, at or near crater J. ALPO/BAA weight=1.
Schickard 1939 Aug 02 UT 00:01 Observed by Moore (England, 12?" reflector) "Floor milky, walls almost vis. 2 bright pts. in area. not extending to extreme w.part of floor" NASA catalog ID #456. NASA catalog weight=4. ALPO/BAA weight=3.
Proclus 1958 Jul 03 UT 06:18-07:15 Obsrved by Bartlett (Baltimore, MD, USA, 5" reflector, x180, S=5, T=3) "Proc. C a remarkable phenom. of which he is certain. At beginning of obs. C was 5 deg bright & conspicuous -- its normal appearance at or nr. SS. At 0620 it suddenly became dull so as to almost vanish. By 0640 C was very dull-- 3.5 deg. An indep. check was made at 0715 with same instru. & it was still at 3.5 deg. Note C does not mean Proclus C but a notation system developed by Bartlett for features in and around Proclus". Cameron's 1978 NASA catalog weight=4 (high). Cameron's 1978 NASA catalog ID #688. ALPO/BAA weight=3.
On 1993 Sep 02 UT2250-23:30 C. Brook (Plymouth, UK, 70mm refractor, x100, seeing=III) noted that Cleomedes A was exceptionally bright and compared it with plate 4C in Henry Hatfield's Atlas. He had noticed it was bright earlier in the evening, but his attention was drawn to it at 22:50UT. By 23:07UT it was dimmer, with patches of cloud coming up and a slight deterioration in seeing. By 22:30 UT the crater was no longer exceptionally bright. The Cameron 2006 catalog ID=466 and weight=5. The ALPO/BAA weight=1.
On 1990 Dec 03 at UT23:00-01:30 M.C. Cook (Frimley, Surrey, UK) noticed that the central peak of Aristarchus was quite bright and extended to a circular region in the east in the crater "sprout" area - Cameron suggests that this is Bartletts self defined EWBS area?. Beyond the rim to the east was very bright. However no colour effect was seen in filters. A sketch was supplied. Cameron notes the coincidence of perigee and full Moon. The Cameron 2006 catalog ID is 416 and the weight=3. The ALPO/BAA weight=1.
Proclus 1955 Oct 03 UTC 02:10-02:40 Observed by Bartlett (Baltimore, MD, USA, 5" reflector x180, S=1-0?, T=4) "Proc. D (his ID) normally a bright white spot on E. floor disappared as a dark spot, I=2.5 & barely disting. from 3deg gray. In July lunation it was seen as normal bright spot at col. 347.57, 359.36, 36.74 & 61.83 but vanished after 61.83. C.p. abnormally dark & close to floor intensity. At 1st failed to find it I=2.5 whereas it is normally 5.0." The cameron 1978 catalog ID=616 and weight=4. The ALPO/BAA weight=2.
East of Plato 1961 Jun 29/20 23:00?-01:00 Observed by Granger and Ring (both in Italy) "Enhancement of spectrum in UV & Ca I recorded on photoelectric spectrometer scans" NASA catalog weight=5. NASA catalog ID #742. ALPO/BAA weight=3.
On 1955 Oct 03 at UT 04:45-05:05 Bartlett (Baltimore, MD, USA, 3.5" reflector, x100, S=5, T=3) observed the following in Aristarchus crater: "Whole cdrater hazy, couldn't focus it. Herodotus unaffected". The Cameron 1978 catalog ID=617 and weight=4. The ALPO/BAA weight=2.
E. of Picard 1879 Nov 01 UT 00:00? Observed by an unknown observer (England?) "Bright spot. (Fort admits he has several more of these records of LTP, but does not give them because they don't fall nr. Mars'opposition which he tho't was cause of them.) Elevation rising N- S, with shading toward terminator." NASA catalog weight=3 (average). NASA catalog ID #214.
On 1978 May 24 at 00:40-01:05UT P. Moore (Sussex, UK, and using a 12.5" reflector at x300-400 - seeing IV) saw colour in Aristarchus (red on the south east wall and southern "horn" of the crater. He could not detect colour elsewhere, but felt that the effect might have been spurious colour. With the increasing altitude of the Moon the light effect decreased. Moore detected red the next night as well (May 25th) and on May 27th, but it was not present on May 29th. The Cameron 2006 Extension catalog ID=33 and the weight=0. The ALPO/BAA weight=1.
Peirescius 1985 Dec 28 UT ~20:56 (Col. 112.5) H. Hill (UK) observed that this crater was piercingly bright. Repeat colongitude observations on later dates failed to show a similar effect. ALPO/BAA weight=2.
Cleomedes Alpha 1993 Sep 03 UT2200-22:20 G. North (UK, 18.25" reflector, x86 & x144) observed it to be a strikingly brilliant 'splodge' seen in the mostly shadow filled interior of Cleomedes, and around this splodge was a faint halo extending symetrically in an eastwards direction. The splodge was the mountain Cleomedes Alpha. Strangely no shadow from the mountain was seen to be cast onto the halo on the east. Observer alerted other observers by phone, and upon returning to the scope found that the splodge had faded in brightness and continued to fade over the next hour as one would expect from a mountain at sunset. Some heavy spurious colour was present. J. Cook & M. Cook (Frimley, UK) observed at 22:20-22:25 and found the bright splodge, but no halo. M. Cook re-observed later and confirmed normal fading of splodge. Roscoe observed from 00:30UT next day, but by that time Cleomedes Alpha had set and was no longer visible in the shadow filled floor. S. Beaumont had observed earlier at 20:00 but had recorded all as normal in Cleomedes. The Cameron 2006 catalog ID=466 and weight=5. The ALPO/BAA weight=2.
Madler 1962 Apr 22 UTC 08:24 Observed by Wildey, Pohn (1st measurement) (Mt Wilson, CA, USA, 60" reflector with photometer) "Photometric measures show change in brightness from Vmag=3.79 to V=4.40. The average brightness for age 17d is V=3.99. Crater faded from .2 mag brighter than av. to .4 mag. fainter (@1.5 times fainter) than av., a range of .6 magnitude, or @ 1.5 times diff. in brightness". NASA catalog weight=5 (very high). NASA catalog ID #757.
Plato 1938 Jul 15 UTC 06:50 Observed by Haas (12" reflector?) "Floor -- definitely green under same conditions as 5/17/38 (see #437). Kaiser after 90 obs. couldn't find any regularity to appearance of the brown color in Plato. I=3.7 comp. with I=2.0 on 6/15/38 (see #439-- color of ground?)." NASA catalog weight=4 (good). NASA catalog ID #440.
On 1961 Jul 01 at UT 00:00? an unknown Miranova (Russia or Israel) obtained some spectral photometry of lunar objects. A spectral plate in 425 -> 500nm bands. The Cameron 1978 catalog ID=743 and weight=5. The ALPO/BAA weight=3.
Madler 1962 Apr 22 UTC 11:48 Observed (2nd mesurement) by Wildey, Pohn (Mt Wilson, CA, USA, 60" reflector with photometer) "Photometric measures show change in brightness from Vmag=3.79 to V=4.40. The average brightness for age 17d is V=3.99. Crater faded from .2 mag brighter than av. to .4 mag. fainter (@1.5 times fainter) than av., a range of .6 magnitude, or @ 1.5 times diff. in brightness". NASA catalog weight=5 (very high). NASA catalog ID #757.
On 1897 Oct 13 at UT 20:00 Pickering (Cambridge, Mass. USA, 15" refractor?) observed in Shroter's valley and the vicinity, "Variations in vapor column" The Cameron 1978 catalog ID=292 and the weight=1. The ALPO/BAA weight=1.
Aristarchus 1976 Aug 13 UT 07:30 Observed by Bartlett (Baltimore, MD, USA, 4.5" reflector 45-225x, S=6=3, T=5) "Nimbus around c.p.=2deg, S.floor=6deg & was red; rest of floor=8deg. This is only tint in Aris.). Tonite saw a pale red glow suffasing the S. region of the crater. Bright blue radiance (gas?) on ENE wall. Viol. radiance on plateau m gone tonite. Red glow on 13th & the region was yellow- brown." NASA catalog weight=4 (high). NASA catalog ID #1442.
In 1955 Oct 05 at UT 03:40-03:48 Bartlett (Baltimore, MD, USA, 5" reflector, x180, S=6, T=5) observed in aristarchus an itenseley bright blue-violet glare on EWBS, E, and NE wall. The Cameron 1978 catalog IF= 620 and weight=4. The ALPO/BAA weight=2.
Near Kepler 1966 Dec 31 UT 03:00? Observed by Petrova, Pospergelis (Pulkova Observatory, Russia) "Special glow in this area. Confirmed by photoelectric method (Petrova) & polarimetric (Pospergelis?) almost simultaneously recorded by both" NASA catalog weight=5 (very high). NASA catalog ID #1007.
Jansen 2013 Aug 26 UT 00:30-01:30 P. Grego (Cornwall, UK, 20cm SCT, x200, seeing II, transparency good) observed a dark patch just east of Jansen D. He had not seen this before. There maybe a depression here hinted at in LOLA ndata. ALPO/BAA weight=1.
On 2008 Oct 19 during 05:40-06:30UT D. Holt of Chipping, UK observed an anomalous patch of illumination just to the west of the centre of the Posidonius J crater. It is possible that this is just some high ground on the floor protruding through the shadow filled crater at sunset. Therefore this has been assigned a weight of 1 for now, just in case it is a TLP - until proven otherwise.
On 1973 Oct 17 at Ut 11:30 Androsan (Edmonton, Canada, 6" reflector, x230) observed a glow 1-2 sec reappearance of Saturn's rings at a place of ring's appearance on the dark limb. The observers attributed it to Saturn and its rings. Cameron speculates that it might be due to gas or dust at the lunar surface. Eye was attacted to the glow which delineated the limb at a position angle of 210 deg at emersion, at Earthshine at Edmonton. The Cameron 1978 catalog ID= and weight=2. The ALPO/BAA weight=1.
S. Beaumont of Windemere, England noted that the crater appeared to be divided into two. Cameron 2006 Extension catalog ID=381 and weight=3. ALPO/BAA weight=1.
On 1998 May 18 UT 02:00-03:16 C. Brook (Plymouth, UK, 60mm refractor, x112, seeing III) observed an obscuration of the central peaks of this crater. Copernicus ramparts were clearly visible. The ALPO/BAA weight=1.
Eratosthenes 1976 Aug 18 UT 06:12 Observed by Bartlett (Baltimore, MD, USA, 4.5" refractor, 45, 225x, S=6, T=3-2) "Again, c.p. is vis. within shadow but much brighter than on Aug, 4 (4 deg) & similar to June at same col. The 2nd bright spot seen in June was not seen tonite. (roughness on walls seen in LO IV & V pics show why these pseudo- shadows appear)." NASA catalog weight=4 (high). NASA catalog ID #1445.
Eratosthenes 1976 Jun 20 UT 07:57 Observed by Bartlett (Baltimore, MD, USA, 4.5" refractor, 40-450x, S=6.5, T=4-3) "Floor covered with shadow & c.p. seen as 5deg bright spot. Another minute spot 5deg bright on SE floor in shadow. (only low hills on floor in SE. spot on terrace?" NASA catalog weight=4 (high). NASA catalog ID 1436.
Tycho 1992 Aug 21 UT 07:58-10:59 Observed by Darling (Wisconsin, USA, 16" & 11" reflectors, visual, photographic, CCD video observations made) "At 08:56UT a V-shaped glow started to appear in the shadow to the east of the central peak" ALPO TLP report. See: http://www.ltpresearch.org/ltpreports/ltp19920821.htm ALPO/BAA weight=1.
Aristarchus 1969 Jan 12 UT 12:00 Observed by Taboada (Mexico, Seeing Excellent) "Region showed same characteristics as previous days, perhaps a little darker color brown but more remarkable. Used red, blue & green filters & difference in color noted in & out of region. (permanent ground color seen?)." NASA catalog weight=3. NASA catalog ID #1116. ALPO/BAA weight=2.
On 1979 Jul 18 at 09:40-10:00 D.Darling (Sun Praire, WI, USA, 12.5" reflector, x80) found that Condorcet (and other features - 12 in total) were blue in colour - some had flashes that expanded from the centres (at different rates). Cameron 2006 catalog ID=61 and weight=0. ALPO/BAA weight=1.
On 1979 Jul 18 at 09:40-10:00 D.Darling (Sun Praire, WI, USA, 12.5" reflector, x80) found that Delambra (and other features - 12 in total) were blue in colour - some had flashes that expanded from the centres (at different rates). Cameron 2006 catalog ID=61 and weight=0. ALPO/BAA weight=1.
On 1979 Jul 18 at 09:40-10:00 D.Darling (Sun Praire, WI, USA, 12.5" reflector, x80) found that Macrobius (and other features - 12 in total) were blue in colour - some had flashes that expanded from the centres (at different rates). Cameron 2006 catalog ID=61 and weight=0. ALPO/BAA weight=1.
On 1979 Jul 18 at 09:40-10:00 D.Darling (Sun Praire, WI, USA, 12.5" reflector, x80) found that Manilius (and other features - 12 in total) were blue in colour - some had flashes that expanded from the centres (at different rates). Cameron 2006 catalog ID=61 and weight=0. ALPO/BAA weight=1.
On 1979 Jul 18 at 09:40-10:00 D.Darling (Sun Praire, WI, USA, 12.5" reflector, x80) found that Mare Crisium (and other features - 12 in total) were blue in colour - some had flashes that expanded from the centres (at different rates). Cameron 2006 catalog ID=61 and weight=0. ALPO/BAA weight=1.
On 1979 Jul 18 at 09:40-10:00 D.Darling (Sun Praire, WI, USA, 12.5" reflector, x80) found that Maskelyne A (and other features - 12 in total) were blue in colour - some had flashes that expanded from the centres (at different rates). Cameron 2006 catalog ID=61 and weight=0. ALPO/BAA weight=1.
On 1979 Jul 18 at 09:40-10:00 D.Darling (Sun Praire, WI, USA, 12.5" reflector, x80) found that Menelaus (and other features - 12 in total) were blue in colour - some had flashes that expanded from the centres (at different rates). Cameron 2006 catalog ID=61 and weight=0. ALPO/BAA weight=1.
On 1979 Jul 18 at 09:40-10:00 D.Darling (Sun Praire, WI, USA, 12.5" reflector, x80) found that Proclus (and other features - 12 in total) were blue in colour - some had flashes that expanded from the centres (at different rates). Cameron 2006 catalog ID=61 and weight=0. ALPO/BAA weight=1.
On 1979 Jul 18 at 09:40-10:00 D.Darling (Sun Praire, WI, USA, 12.5" reflector, x80) found that Promontorium Agarum (and other features - 12 in total) were blue in colour - some had flashes that expanded from the centres (at different rates). Cameron 2006 catalog ID=61 and weight=0. ALPO/BAA weight=1.
On 1979 Jul 18 at 09:40-10:00 D.Darling (Sun Praire, WI, USA, 12.5" reflector, x80) found that Tisserand (and other features - 12 in total) were blue in colour - some had flashes that expanded from the centres (at different rates). Cameron 2006 catalog ID=61 and weight=0. ALPO/BAA weight=1.
In 1950 Jan 21 at UT 09:00 T.Saheki (Osaka, Japan) and S. Murayama observed several bright patches on the western limb region in Earthshine. These were not the same as patches observed by them on Jan 20. A tiny bright spot on the SW limb was about mag 8. The ALPO/BAA weight=1.
Cape Agarum 1967 Jan 14 UT 17:17-17:35 Observed by Middleton, Colchester, England, 4" refractor, x240, S=G) "Cape was hazy or obscured whereas Piccard, Pierce, & Cape Olivium were quite clear. Has seen this area obscured many times" NASA catalog weight=3 (average). NASA catalog ID #1008.
On 1969 Jan 22 at UT 00:10-00:30 Kilburn (England, UK, 6" reflector x192, English Moon Blink device) observed a colour blink on the outer east wall of Gassendi. Cameron says: "in dark!". The Cameron 1978 catalog ID=1117 and weight=3. The ALPO/BAA weight=2.
On 1980 Apr 18 at UT20:55 G. Amery (Reading, UK, 10" reflector, 50- 200x, seeing III) individual features not seen near Cassini. Cameron 2006 catalog ID=86 and weight=5. ALPO/BAA weight=1.
Taruntius on 1980 Apr 18 UT 22:33 P.Madej (Huddersfield, UK) noticed that this crater changed from dark black to almost a light grey over a period of about 30 seconds. Observation started at 22:27 and ended at 22:37. When the observer saw this effect in that 10min period is not given, so the UT above is the nid UT of the observing period. The ALPO/BAA weight=1.
On 1981 May 07 at UT20:30-21:20 M. Mobberly of Suffolk, England (14" reflector - seeing=poor and transparency=poor) P.W. Foley of ---- saw faintish yellow-brown streaks in Aristarchus. Apparently these had been seen the previous night, but were much fainter tonight. Bartlett had previously seen this effect on the southern floor of the crater according to Cameron. The Cameron 2006 catalog extension ID No. is 133 and the weight=3.
On 1881 Sep 27 at UT 19:00 Marokwic (South Africa) observed a comet- like object pulling across the Mon. The Cameron 1978 catalog ID=225 and the weight=2. The ALPO/BAA weight=1.
Atlas 1968 Dec 24 at UT 09:15-10:45 Osawa (Kyoto-Ken, Japan, 8" reflector, 9mm Ortho, Seeing=5, later worse) saw a slight brownish hue on the northern shadowy bed in the crater. It was difficult to see the difference between the glow and chromatic aberation of the eyepiece. The tint never showed up in filters. The ALPO/BAA weight=1.
On 1980 Apr 19 at UT 20:37-20:49) P. Madej (Huddersfield, UK, 77mm refractor, x83 and x111) at 20:37 UT saw a slight glow at x83, quite small in size. At 20:46UT no glow was seen at x83. At 20:49 a slight glow seen again, but unclear and illdefined - appeared larger in area at x111. Observatons ceased at 21:56 dues to clid. ALPO/BAA weight=1.
On 1980 Apr 19 at UT20:30-22:59. The following is quoted from the Cameron 2006 catalog.... "(Buczynski) alerted by colleague (Greenwood) who used filters W15 (IR), W25 (red), W44A (blue), & W58 (UV) and had located a possible blink in it. (Bucz) used W15, W44A & W25. C.P was very bright in W25 (red), dull but vis. In W44A (blue) & floor was noticibly darker in W44A than in W25. Bright cp vis. In W15 & floor was of a light shade. Other craters checked for color, none found. In 44A floor lost some definition (gas?). Sketches from Bucz. & Greenwood. (Pedler) at 2140, floor area around cp was seen in white & red as normal but blink was vis in white, darker in blue. Checks of other features were negative. (Amery) small dark center & small dark area - not shadow - under S wall. N wall obscured by dark area extending N onto surrounding mare. (normal?) which was difficult to focus (gas?). At 2155 N wall now sharper & dark area less intense. Craterlet Cameron in N wall clearly seen which was invisible 1/2 h earlier. (Saxton) whole crater flashed and blinked at 2155. Could see detail in brighter W 1/2 of crater - not seen earlier. At 2205 seeing poor, at 2215 it was normal. (Blair) at 2155 used red & blue filters & in blue it was darker than in red. W. wall not well defined. (J. Cook) saw spurious color on N & S rims. Saw a pink tinge on SE rim. (A. Cook) saw spur. Color on most craters as seeing deteriorated. Got a blink on SE region > red than blue". The Cameron 2006 catalog ID=87 and the weight=5. The ALPO/BAA weight=3.
Proclus 1971 Jan 01 UTC 19:00-20:25 Observed by Marchart (Aldershot, England, 8" refractor x500). "Color patch on N wall, red & green on inside, even tho eyepieces were rotated & changed. (chrom aberr. ?) (experienced observer)." NASA catalog weight=1 (very low). NASA catalog ID #1280.
On 1983 Mar 19 at UT04:56-05:54 Louderback (South Bend, WA, USA, 3.1" refractor, seeing=1-2 and transparency=4) observed that at 05:15UT Eimmart appeared fainter than the observing session began at 04:56 UT. There was also a bright flash on the north wall that "fluctuated at rate of 9s" Cameron comments that atmospheric blow ups were 11-12s. Louderback found that the TLP was seen in the blue filter but not in the red. The Cameron 2006 catalog ID=207 and the weight=4. The ALPO/BAA weight=3.
On 1980 Apr 20 at UT21:12-22:45 J-H Robinson (Teignmouth, UK, 10.5" reflector, x180) found, using a Moon Blink device, evidence of colour on the flor patches of Fracastorius crater, brighter in blue than in red. Also the floor to center varied in brightness in blue and in red. Peters observed in white light and found the south east-south wall had a slight orange cast and when a Moon blink was used it was less bright in blue than in red light. M. Cook found spurious colour on the south rim and also on Mons Pico. There was a colour blink reaction on the southeast floor of Fracastorius - this was both faint and blurred and not seen in white light. A.C Cook detected the permanent blink in the south east floor of the crater at 21:47 and a fainter one in the north west (marginally brighter in red than in blue). J.D. Cook found no colour with the Moon blink device. 21:22-22:10 P.W. Foley got a strong colour reaction with the Moon Blink device - brighter in red than in blue and detected a pink colour visually on the south east wall 22:10- 22:45 (this did not give a blink effect though). Cameron 2006 catalog ID=88 and weight=4. ALPO/BAA weight=2.
On 1980 Apr 20 at UT20:27 M.Price (Camberley, UK) saw a flash in the Grimaldi-Aristarchus area. Cameron 2006 catalog TLP ID=88 and weight=4. ALPO/BAA weight=2.
On 1980 Apr 20 at UT21:38-21:50, Blair of Renfrewshire, Scotland (used an 8" reflector and seeing=III) saw three patches in Petavius and they could still be seen 7 minutes later. At 21:50UT he used a filter and found the "northern one was brighter in blue, the southern one was brighter in red and the central one was the same shad ein both filters." Cameron comments that the central patch was a permananent one. She then goes onto say that the crater is described as having dark patches that are opposite to what one would expect from Fitton's theory applied to dark features. Cameron 2006 extension catalog ID=88 and weight=4. ALPO/BAA weight=2.
On 2001 Apr 29 at UT 20:50 R. Braga (Italy) reported that without any filter, the brightness of the east wall of Torricelli B was halfway Torricelli C (faintest) and Moltke (brightest). By insering a Wratten 25 red filter though, the crater was slightly more evident. However using a blue Wratten 39A filter, the crater vanished completely, whilst Toricelli C remained. The ALPO/BAA weight=3.
On 1981 Mar 12 at UT 19:25-20:30 Butler (of Brixton, UK, using a 10" reflector at 32-64x) noticed that Aristarchus was not visible, although the Earthshine was very obvious. Foley (of Kent, UK, and using 12" reflector) noticed that the crater was only just visible but Plato could definitely be seen. Cameron's 2006 TLP extension catalog ID=125 and weight=0. ALPO/BAA weight=2.
Messier 1878 Nov 01 UT 20:00? Observed by Kleis (Cologne, Germany, 6" refractor?) "Mess. A is more yellow after noon, greener near Mess. A noon, both are same color." Please observe this pair of craters in colour and compare noon and non-noon images. NASA catalog weight=4. NASA catalog ID #206. ALPO/BAA weight=1.
On 1789 Sep 26 at UT 03:30 Schroter (Lillienthal, Germany) observed close beneath Mons Blanc at the west foot, in the dark, a small 5th magnitude, speck of light. Its round shadow was sometimes black, sometimes grey. Cameron suspects that this is the same as her TLP report No. 50. the Cameron 1978 catalog ID=62 and weight=4. The ALPO/BAA weight=3.
On 1789 Sep 26 at UT04:25? Schroter (Lillienthal, Germany) noted a bright point 26" north of Aristarchus crater. Note that the year might have been 1788? The Cameron 1978 catalog ID=50 and the weight=3. The ALPO/BAA weight=3.
On 1789 Sep 29 at UT04:25? Schroter (Lillienthal, Germany) noted 1'18.5" south east of plato was a whitish bright spot shining somewhat hazily, 4-5"in diameter and at 5th magnitude. He never saw this again. The spot became conspicuous at times and then disappeared. There was nothing else similar in Earthshine. Note that the year might have been 1788? The Cameron 1978 catalog ID=50 and the weight=3. The ALPO/BAA weight=3.