On 1904 Aug 01 at 05:00? Pickering (Echo Mt., CA, USA) UT Plato: "Bright hazy obj., 2" diam. on floor, Obs before & after were normal". The Cameron 1978 catalog ID=318 and the weight=4. The ALPO/BAA weight=3.
Messier A 1951 Oct 20 UT 00:00? Observed by Moore (England) "Brilliant white circular patch in it. has seen it & Messier blurred several times." NASA catalog weight=4 (good). NASA catalog ID #545 Note that the date and time given are probably wrong as the Sun is ~7deg below the local horizon at this time. ALPO/BAA weight=1 to reflect this error.
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.
Aristarchus 1976 Aug 15 UT 23:00-23:45 Observed by Garbott (2) (Bedfordshire, England, 10" reflector x500, seeing Antoniadi I) and by Moore (Sussex, England, 15" reflector, x360, seeing Antoniadi IV) "Noted blue color on N. wall extending toward Herod. Also saw orange color in S. region. Confirmed by father. (similar to many of Bartlett's rept's.), More noted nothing unusual at 2320h." NASA catalog weight=4. NASA catalog ID #1444. ALPO/BAA weight=2.
On 2009 Oct 09 UT11:00-11:04 NASA's LCROSS upper centaur stage, followed 4 min later by the observation spacecraft, is due to impact into a the crater Cabeus in the hope of kicking up some dust and possible frozen volatiles. Note that this description is intended for observers on the date of impact and it is doubtful that any new science could be achieved by re-observing the same area months after the impact. If you are observing on the date of impact, then please observe around 11:00-11:04UT and ignore the predicted times in the headings. However this report is included as techniqcally if something is seen it is a TLP, albeit man-made! For those observing on the date in question here are a few observing tips to maximize the science of your observations: (1) If you are imaging, then please try to obtain images before the impact because you can then subtract these from images taken during the impact and hence show up faint changes that you might normally miss. (2) If you have a spare scope and camera,use this to observe through filters such as UBVR or I, or if you have narrow band interference filters, try observing in say Hydrogen Alpha, Methane, OH, or indeed any volatile that you might expect to see in a comet (the main source of water at the poles). (3) Please try checking the area long after the impact, just in case other effects might trigger a TLP. (4) Please go to some trouble to ensure accurate timings- these will be essential in order to understand the sequence of events - assuming any are seen. Timings can be obtained using a short wave radio or via a GPS. Note that you should always use UT or UTC. (5) Please send any observations that you make into the upload section of the LCROSS campaign observers web site. If you belong to an astronomical society e.g. BAA or ALPO, then do please send copies of your observations to the Lunar Sections of your society or club. (6) Finally this desription will be updated a day or two after the planned impact.
On 2009 Sep 09 UT23:31:43 P.Grego (St Dennis, Cornwall, UK, seeing II- III) suspected a flash south of Cabeus, just beyond the terminator. It was not bright, and lasted a fraction of a second. Thinks it might have been illusory as he saw some fainter flashes (cosmic rays?) during that nights observing session. ALPO/BAA weight=1.
Aristarchus 1974 Sep 08 UT 04:45-06:30 Observed by Cowan and Johnson (Dublin, TX, 8" reflector, x59, x152, S=7) "Saw a bright luminous, blue, misty cloud on th NE rim. Obscur. for 1st hr. then gave way to pink & features became vis. Cloud was tear-drop shape. No movement to glow. Pink cloud glowed too. Very tenuous by 0130h. (Nakamura says there were no seismic events within several hrs. of this time). Another person saw it without being advised as the where it was." NASA catalog weight=5. NASA catalog ID #1393. ALPO/BAA weight=4.
On 2009 Sep 11 UT00:15-00:20 and 01:00-01:05 C.Brook (Plymouth, UK, 5" O.G., x100, seeing tremourlous but definition improving over time) noticed that the central peak(s) in Alphonsus were brightening gradually. No effect was seen earlier at UT23:30-23:35. One presumes that the effect also occured between these two observing times? The observer suspects that this was not a TLP, but is uncertain. ALPO/BAA weight=1.
Tycho 2006 Jan 22 UT 06:34-06:36 Observed by Fabio Carvalho (Assis, Sao Paulo Brazil, 25cm f/6 Newtonian) "Green colouration seen on a rim of Tycho, effect remained visible for only 2 minutes. Attempts to image it shortly afterwards failed as it had finished by then" An REA-Brasil observational report. ALPO/BAA weight=3.
On 2009 Sep 11/12 UT23:28-00:00 M.C. Cook (Mundesley, UK, 90mm Questar, x80 and x190, seeing II and transparency moderate-poor) observed pink on the north west rim of Tycho and green-blue on the inner SW rim. No sign of colour elsewhere on the Moon except for the S-E rim of Plato that was red. The Moon was about 20 deg in altitude at the time. The effect had gone by the end of the observing period. A simulation of spurious colour in different directions was generated by the BAA Lunar Section and found to possibly account for these colours, although there should have been some strong colours seen elsewhere in Tycho and none were. The BAA/ALPO weight=2.
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.
Aristarchus 1971 Oct 22 UT 19:43-19:56 A.Mackay (Hatton, UK, 15cm reflector, x50) observed a pale pink on the W(IAU?) half of Aristarchus and a pale shade of blue on the E(IAU?) half. The effect faded from 19:56UT onwards and had gone 2 minutes later. No information on whether other craters exhibited this effect, given. Burgess, who observed later did not see any colour. ALPO/BAA weight=1.
On 1980 Apr 16 at UT 20:00-22:20 P.W. Foley (Kent,UK, 12" reflector, seeing II-III) found that Aristarchus could barely be seen. Therefore it was not possible to take CED brightness measurements. Strangely Cassini, Kepler, Plato and Mons Pico could be seen. However at 20:16 UT St Elmo fire-like flashes were seen coming from the interior south east corner of Aristarchus at 20:16 UT and then the brightnesss spread to fill the rest of he crater. Duration was about 5-20 sec (Cameron comments: atmospheric effects?). The crater reached peak brightness at 20:17UT (CED reading of 8). Foley comments that the crater rim and area 16-24km around this (including Herodoyus) had a translucent radiance. However at 20:25UT the brightness reduced (including Herodotus) down to CED 3, however the blue radiance remained. At 21:07UT Foley saw a star-like flash in the south east of the floor (CED 3-4). Grimaldi was found to be of constant brightness by comparison using the CED Brightness=2). At 20:20UT Amery (Reading, UK) found Aristarchus to be a well visible circular fluorescent patch. At 20:40 Amery found the region between Aristarchus and Herodoutus was glowing - appeared almost as a flare from Aristarchus and by 20:55UT there was also a flare to the west of Aristarchus. At 20:27 Madej (Huddersfield) detected only a slight glow from Aristarchus and the region affected was small - indeed the glow had gone by 20:46. At 20:40 Ricketts detected a "continuous blue emission" - this had a cycle of 5- 10 sec (Cameron comments: atmosphere?). Saxton (Leeds, UK) detected at 20:42 "translucent effects and variations" at 20:42 noticed a star-like point. At 19:00-21:40 M. Price (Camberley, UK) decided that Aristarchus was fainter in brightness than normal. Peters observed a faint nebulous spot at at 20:25-21:00 that changed in brightness in an irregular way. Cameron 2006 catalog ID=86 and weight=5. ALPO/BAA weight=3.
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.
North shore of Mare Crisium 1915 Dec 11 UT 06:00? Observed by Thomas (Glenorchy, Tasmania) "star-like pt. on N. shore of mare. (Eimmart?) Particularly bright spot. Tho't it was sunlight from rim of sm. crater." NASA catalog weight=0 NASA catalog ID #358. 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.
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.
On 1982 May 27 at UT 17:05-17:35 E.V. Arsyukhin (Moscow, Russia, 3" reflector) found Lacus Sominorum was very bright, misty and the colour varied. It was back to normal on the 28th and abnormal on 29-31st. - had a dark spot in the middle for about 30 min. The Cameron 2006 catalog ID=169 and weight=3. The ALPO/BAA weight=2.
On 1982 May 27 at UT 17:05-17:35 E.V. Arsyukhin (Moscow, Russia, 3" reflector) found Endymion had a dark spot in the middle for about 30 min. The Cameron 2006 catalog ID=169 and weight=3. The ALPO/BAA weight=2.
On 1980 Apr 20 at UT20:05-21:02 J.D. Cook (Frimley, UK, 12" reflector, x60, seeing III-IV) at the start of this session found some bright spots in the area of Copernicus, and at 21:02 detected some flashes in this region. Cameron 2006 catalog ID=88 and weight=1. ALPO/BAA weight=1.
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 UT 19:45-22:45 M.C.Cook (Frimley, UK) - colour (probably spurious) seen on Piccolomini. Cameron 2006 catalog ID=88 and weight=4. ALPO/BAA weight=1.
On 1983 Jan 19 at UT 18:00-19:00 G. Amery (Reading, UK) discovered that Aristarchus could not be seen in Earthshine, this was odd because less prominent features could be seen. Other observers (Moore and Foley) confirmed the very low brightness of the crater. The Cameron 2006 catalog ID=197 and the weight=2. The ALPO/BAA weight=2.
On 1983 Jan 19 at UT 18:00-19:00 G.W. Amery (Reading, UK) found that Messier was difficult to define. The Cameron 2006 catalog ID=197 and the weight=2. The ALPO/BAA weight=1.
On 1980 Apr 20 at UT21:12-22:45 J-H Robinson (Teighmouth, 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 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=3.
Proclus 1983 Jan 19 UT 20:36-21:00 Observed by Cook (Frimley, UK, Seeing III, Transparency, Moderate) "Colouration seen". BAA Lunar Section Report. ALPO/BAA weight=2.
On 2000 Feb 11 at UT19:00 G. North (Norfolk, UK) telephoned TLP coordinator, Patrick Moore, to report a possible colour anomaly in Aristarchus. Moore had poor conditions in Selsey (UK) and saw nothing unusual. However by this time North was reporting that, the colour was fading. Two other BAA members were alerted, but were clouded out. The ALPO/BAA weight=3.
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.
Webb (England, using a fluid achromat) saw brilliant minute spots and streaks in Mare Crisium dotting its surface. This was seen near first quarter. Cameron states that Schroter, Betr?, Madler, Slack and Ingall had all seen it this way at times. Cameron 1978 catalog iD=111 and weight=3. ALPO/BAA weight=2.
Plato 1948 Apr 15 UT 20:00? Observed by Thorton (Northwitch, England, 9" reflector) "Brilliant orange-yellow flash 1 km inside E. rim (similar to earlier #500 LTP flash in the dark)" NASA catalog weight=3 (average). NASA catalog ID #504.
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.
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.
Dome W. of Manillius 1965 Dec 30 UT 10:35 Observed by Newport (England, 4" refractor x180) "White patch or haze, everything else was sharp" NASA catalog weight=3 (average).
On 1980 Apr 22 at UT20:30 R.Rohslberger (Hittfield, (near Hamburg) West Germany, 8" reflector, x170 25mm occular used, 300mm focal length?) took some photographs using projection. One of these recorded an apparent "ejecta curtain". Cameron considered lens flare, but the other photographs did not show this. If real then the plume was at a height of ~40km and the ray was ~130km. Cameron concludes that this was an impact photograph. The Cameron 2006 catalog ID=90 and the weight=5. The ALPO/BAA weight=3.
On 1983 May 20 at UT00:00-03:00 K. Marshall (Medellin, Columbia) noted that Mons Piton was too bright near the terminator and was surrounded by shadow. A sketch was made. The mountain appeared segmented with one thin shadow line. The mountain looked like a Mexican Sombrero hat. This appearance is normal. What was abnormal was that Piton was brighter than Proclus, and only slightly fainter than Censorinus. The CED brightness measurements were normal Piton=3.6, Proclus=3.5 and Censorinus= 3.7. Please check to see whether this is still the case. The cameron 2006 catalog ID=221 and the weight=3. The ALPO/BAA weight=1.
On 1984 Apr 08 UT 19:50 Mobberley (14" reflector, x194, seeing III-IV, Transparency Fair-Poor, Cockfield, UK) found that Torricelli B's shadow was 1/2 the way across the floor, which was normal, but that there was a very dar grey/brown shroud around the carter, out to several radii. The ALPO/BAA weight=1.
Alphonsus 1972 Sep 15 UTC 18:48-18:56 Observed by Hopp (13.25E, 52.5N, 75mm refractor) "Diffuse white to blue area within the crater - not sure" T=4, S=4. Ref: Hilbrecht & Kuveler Moon & Planets (1984) Vol 30, pp53-61.
Ptolemaeus 1866 Apr 22 UTC 20:00? Observed by Ingalls (Champion Hills, England, UK) "Crater on term., unusually smooth surf. seemed much diversified & gave impression, as at many other times that there was an obscuring medium". NASA catalog weight=3 (average). NADA catalog ID = 142. ALPO/BAA weight=3.
On 1953 Sep 16 UT03:00 R.M. Lippert (San Diego, CA, USA, 20cm Cassegrain reflector, x90)saw a bright magnitude 1 flash on the Moon, that was probably on the east rim of Werner(?) crater. It is unclear if the observer meant it was really magnitude 1, or was what a magnitude 1 star would have looked like. The flash was yellow-orange in colour. Observation described in the "Observations and Comments" column in the December, 1953 Strolling Astronomer (Vol. 7, No. 12), on page 170. The ALPO/BAA weight=3.
Pallas-Schroter 1953 Nov 13 UTC 02:00 Observed by L.Stuart (USA) "Saw and photographed a bright spot on term. between these two craters. Used Kodak 103aF3." NASA catalog weight=5 and catalog ID #559. ALPO/BAA weight=5.
On 2009 Nov 25 UT18:42-21:03 P.Abel, T.Little and C.North (Selsey, UK, 15" reflector, seeing II-III, transparency very good), all saw visually a brownish tinge on the north west rim of Eratosthenes crater. P.Abel made a sketch and T.Little took some high resolution CCD images, some of which were through coloured filters. Checks were made for spurious colour, but none was seen elsewhere on the Moon. The eyepiece was changed but this made no difference. M.C.Cook (Mundesley) was observing with a smaller scope at the same time, but saw no colour, however observing conditions were worse. W.Leatherbarrow (Sheffield, UK) was observing with a instrumenet mid way in size, and saw a brownish tinge in the NW rim area, but saw a similar colour elsewhere and put this down to spurious colour. Normally multiple observers seeing the same thing would result in a weight of 4, however as this was only observers at Selsey and some of the evidence contradicts, I am allocating an ALPO/BAA weight=3.
On 1969 Nov 18 at UT 04:22 Loocks (Valparaiso, Chile, 12" reflector) observed a flash of light of magnitude 12. Cameron speculates a meteor and mentions the apollo 12 watch. The Cameron 1978 catalog ID=1214 and weight=1. The ALPO/BAA weight=1.
Eratosthenes 1947 Jan 30 Mean Col. 16deg. Observed by Hill (UK) "Main peak of massive central mountain group appeared to be in a shadowless having regard to it's claimed height of 6,600 ft. The whole of the floor to the west should have still been in darkness. Instead immediately to the west was a dark (intensity 1.5-2) region extending almost to the foot of the bright inner wall and very diffuse in outline. The observation could not be followed through due to increasing cloud, but on the following night all was normal."
On 2001 Jun 29 at UT22:16-22:22 C. Brook (Plymouth, UK, 60mm refractor, x120, no spurious colour seen, seeing I) observed that the central peaks of Alphonsus looked bright at 22:16UT but had dimmed by 22:22UT. The three dark patches on the floor of Alphonsus were clearly seen. The ALPO/BAA weight=1.
On 2001 Jun 29 at UT 22:16-22:20 C. Brook (Plymouth, UK, seeing conditions very good, x120) reported that the central peak of Alphonsus was brighter than the central peak of Arzachel (or was it the other way around?). Cook observed 4 hours later from Washington DC, USA and found that on CCD images that the central peak of Alphonsus was only slightly less than that of Arzachel. The ALPO/BAA weight=2.
Piton 1958 Sep 23 UT 00:00? Observed by Moore? (UK?) "Enveloped in an obscuring cloud-like mist" NASA catalog ID 697. NASA catalog weight=2. ALPO/BAA weight=2.
On 1982 Jul 01 at UT 02:23-02:58 Robotham (Springfield, ON, Canada, seeing=II) found that the west rim of Pytheas crater was a very bright yellow-white, indeed brighter than Proclus. At lower magnifications, Pytheas was one of the brightest spots on the Moon. The Cameron 2006 catalog ID=173 and weight=2. ALPO/BAA weight=2.
Messier and A 1966 Dec 22 UT 06:00-06:30 Observed by Kelsey (Riverside, CA, USA, 8" reflector, x200, S=G, T=P) "Blinks on floors of both craters (blink device not stated)" NASA catalog weight=2 (low). NASA catalaog ID #1004.
Bulialdus 1979 Aug 03 UT 21:36-21:48 Observed by Cook (Frimley, UK, seeing III, Moonblink device) "Bullialdus eastern side of the crater looked brighter in red i.e. rim and exterior, extending to the south slightly and this reddish areas was slightly hazy. At 21:41 it clouded over but at 21:47-21:48 it cleared briefly and effect was noted again. Also Darney appeared very visible through the red filter. Probably spurious colour as the Moon was -18 deg in declination and the whole Moon had a slight brownish tinge" ALPO/BAA weight=1.
Darney observed by Cook (Frimley, UK, seeing III, Moonblink device) See TLP report for Bullialdus (eastern side) concerning reddish areas. At 21:41 it clouded over but at 21:47-21:48 it cleared briefly and the effect was noted on Bulialdus again. Also Darney appeared very visible through the red filter. Probably both effects were spurious colour related as the Moon was -18 deg in declination and the whole Moon had a slight brownish tinge. An ALPO/BAA weight of 1 is assigned to this TLP."
W. of Mare Humorum (50W, 25S) UTC 00:00? Observed by Mac Farline (England?) "Bright Point" NASA catalog weight=2 (low). NASA catalog ID 719.
In 1820 Oct 17 at UT 20:00 an unkown observer reported in Mare Imbrium, south of Sinus Iridum (30W, 40N) some brilliant spots. The Cameron 1978 catalog ID=80 and weight=1. The ALPO/BAA weight=1.
Plato 1966 Dec 23 UT 06:15-07:10 Observed by Kelsey (Riverside, CA, USA, 6" reflector, S=P, T=G) and Coralitos Observatory (Organ Pass, NM, USA, 24" reflector +Moonblink) "3 brilliant spots on floor, all showed blinks, (permanent colored Ground features ?). Not confirmed by Corralitos MB." NASA catalog weight=2 (low). NASA catalog ID #1005.
Gassendi 1977 May 28/29 UT 20:45-21:15 Observed by D. Sims (Dawlish, Devon, UK) saw a hazy area on the south east floor that was normal in red and white light but darker in blue. This was partly confirmed by J-H Robinson (Devon, England, 10" reflector) 21:24-23:12 who saw the south east floor of Gassendi to have a loss of detail - but no colour seen, although at 21:57-21:58 it was slightly brighter in red than in blue briefly. P. Doherty (22:45-23:15) did not see anything ususual. D. Jewitt (22:22-22:55) did not reveal anything ususual, apart from spurious colour. The Cameron 1978 catalog ID=3 and ID=1463. The ALPO/BAA weight=3.
On 1889 May 11 at 22:00? UT an unknown observer saw an ink black spot on the rampart of Gassendi. It had not been seen before ar at the next lunation or indeed ever again. Cameron 1978 catalog ID=261 and weight=3. ALPO/BAA weight=2.
Aristarchus 1975 Oct 16 UT 20:00? Observed by Foley (Kent, England, 12" reflector) "Deep blue-viol. spot in NW (IAU?) interior corner." NASA catalog weight=3. NASA catalog ID # 1413. ALPO/BAA weight=1.
Aristarchus 1976 Sep 05/06 UT 18:45-01:35 Observed by Prout (England?, 12" reflector, S=III-II), Foley (England, 12" reflector), Moore and Spry (Sussex, England, 12" reflector) "Viol. hue on crater on W. wall, especially NW corner seen by Prout & 2 Foleys. Moore & Spry did not see color. All obs. noted that the crater was dull
Aristarchus 1971 Sep 01 UT 20:45-21:05 Observed by Neville, Cunnington (Nottingham, UK, 4" refractor x180, altitude, low) "Saw a bright glow, especially in E. wall (Confirm. but not indep.?)" NASA catalog weight=3. NASA catalog ID #1310. ALPO/BAA weight=1.
On 1965 May 12 at UT 19:10 E. Penzel (Rodewisch, East Germany) was taking a sequence of images during the impact of the Soviet Lunik 5. He detected a tens of km scale elongated cloud after the impact over a duration of 9.5 minutes. However there are differences between the images elsewhere on the Moon, possibly due to different exposures or some other effects and it is not 100% sure that what he detected was impact debris/cloud?. The ALPO/BAA weight=3.
Proclus 1970 Oct 12 UT 00:54 Observed by Bartlett (Baltimore, MD, USA, 4" reflector, 51x-181x) "Floor darkened to intensity 1.5 deg (albedo) & c.p. became invis. Next day c.p. reappared & was 5 deg bright & 6deg bright on 15th" NASA catalog weight=4 (high). NASA catalog ID #1277.
Observed by Bartlett (Baltimore, MD, USA, 5" reflector x180, S=1-5, T=5) Pseudo peak visible within floor shadow at 03:10h" NASA catalog weight=4 (high). NASA catalog ID #671. ALPO/BAA weight=3.
On 1965 May 12 at UT 22:20 H. Miles (UK) found a possible obscuration in Bailly crater. Most of the region was as sharp as normal, but the central area was greyish and blurred. Although the observer concerned considered themselves a non-experienced observer, another BAA Lunar Section observer saw the same effect. ALPO/BAA weight=2.
1954 Aug 11 observed by Firsoff (Somerset, UK, 6.5" reflector, x200) "Brilliant in red filter, variable)" NASA catalog weight=4. NASA catalog ID #570. ALPO/BAA weight=3.
Ross D 1965 Apr 14 UT 06:03-06:22 Observed by Harris (Whittier?, CA?, USA, 19"? reflector) "Phenomenon description unavailable. Given at an ALPO meeting" NASA catalog weight=0 (very unreliable). NASA catalog ID #874.
Aristarchus-Herodotus 1971 Sep 02 UTC 20:00 Observed by Ayeau (Paris, France, 12" reflector, x100) "Brownish-red or maroon seen on Aris. W.wall ridge to Herod. on S.wall of Herodotus" NASA catalog weight=2. NASA catalog ID #1311. ALPO/BAA weight=2.
On 1988 Sep 23 at 19:40-19:55 & 20:36-20:41 G. North (760mm Coude Rrefractor, x250, Royal Grenwwich Observatory, Herstmonceux, UK, seeing V, Transparency: Fair). 19:40-19:55 image very unsteady. All seems normal in other crtaters with the exception of Arcimedes. Much of the rim seems indistinct apart from a 1/4 length of the west rim. Strongly suspected that this was due to a combination of seeing and illumination. UT 20:02-20:06 - checked the area with a lower magnification 10" Astrographic Refractor - the crater seems more normal, so suggesting that the theory was correct. 20:36-20:41 returned to the 30" reflector, and the crater appeared similar to the start of the session. This is almost certainly not a TLP, but it would be helpful to have some images or sketches to check this theory out. Weight=1.
On 1995 Oct 06/07 at UT 22:45-00:00 P. Mirteto (a UAI observer, RI, Italy, 20cm reflector) observed some brightness changes in Herodotus. Please note that this description is a summary of the material on the UAI web site. The ALPO/BAA weight=2.
On 1995 Oct 06/07 at UT 23:05-00:00 P. Mirteto (a UAI observer, RI, Italy, 20cm reflector) observed some brightness changes in Prinz. Please note that this description is a summary of the material on the UAI web site. The ALPO/BAA weight=2.
Schroter's Valley 1897 Oct 08 UT 22:00 Observed by Pickering (Cambridge, Maas., USA, 15"? refractor) "Variations in vapor col. Tillsow, C was largest compared with D&E& most conspicuous 1.3 d after sunrise. Drawing. (time est. fr. given colon.)" NASA catalog weight=3 (average). NASA catalog ID #291.
On 1987 Mar 13 at UT02:00-03:00 De Groof (Belgium, 8" reflector x150, seeing=clear) noted that the north west part of Aristarchus had a blood red shimmering filling the whole crater. A video by Mobberley some 18 hours later, shows variation in Aristarchus. Cameron 2006 catalog ID= 301 and weight=5. ALPO/BAA weight=3.
On 1977 May 30 at 21:04-02:13UT J.H.-Robinson noted a loss of detail inside Gassendi, however he did not regard this as a TLP. The effect was also seen by P.W. Foley. Cameron 2006 extension catalog TLP ID=16 and weight=0 ALPO/BAA weight=1.
On 1982 Jun 05 at 22:00? UT, Chapman (UK, using a 12" reflector), again using a x2 yellow filter, noticed that the central craterlet detectabilty changed such that sometimes it was visible and sometimes not. Foley (Kent, UK)noticed that the central craterlet could only just be seen between June 2 to June 5 and was much less discernable than during the previous lunation. No CED brightness measurements made. The floor of Plato was noted to be very dark though. Cameron 2006 catalog ID=172 and weight=4. ALPO/BAA weight=2.
On 2000 Jun 15 UT 20:37 C. Brook (Plymouth, UK, 60mm refractor, x117 & x40, seeing good, transparency excellent) observed abright spot on the north rim of Mare Crisium (57E, 25N). It was comparable to the illuminated rim of Proclus in brightness. No colour seen. The spot was not visible the next night. The ALPO/BAA weight=1.
Herodotus 1972 Jul 27 UT 2250-2350 M.Brown (Hutington, UK) thought that he saw a pseudo peak in the centre of Herodotus. He could not decide if it was real or an optical illusion. ALPO/BAA weight=1.