Aristarchus 1968 Dec 07 UT 07:00? observed by Corralitos Observatory (Organ Pass, NM, USA, 24" reflector+Moon Blink) "Bluing around 3 craters, strongest at Aris. Lasted several days. Photos show 30% more intensity in blue filter than in red or neutral. Moon's declination northerly. Obs. think it was due to atm. effects" NASA catalog weight=5 (very high). NASA catalog ID #1105.
On 1968 Dec 07 at UT 07:00? Corralitos Observatory (Organ Pass, NM, USA, 24" reflector and Moon Blink device) observed a bluing around three craters, one of which was Kepler. This effect lasted several days. Photographs were taken that show30% more intensity in the blue filter than in red or neutral. The Moon's decination was northerly. The observers suspect that it was an atmospheric efect and not a TLP. The Cameron 1978 catalog ID=1105 and the weight=5. The ALPO/BAA weight=3.
Gassendi 1940 Jul 22 UT 05:00 Observed by Haas (NM?, USA, 12" reflector?) "Largest bright spot in SE part of floor had I=8.6, but 6+ on other dates. (see #472, 474 & 475). (8.6 is normal?)" NASA catalog weight=4. NASA catalog ID #469. ALPO/BAA weight=3.
Proclus 1956 Jul 25 UTC 06:16-06:33 Observed by Bartlett (Baltimore, MD, USA, 5" reflector, x180, S=3-5, T=4) "C.p. distinctly vis. within floor shadeo, est. 5 deg bright but no trace of it at col. 122.37deg in Oct, '55(Oct. 4?)." NASA catalog weight=4 (good). NASA catalog ID #645. ALPO/BAA weight=2.
Four bright spots seen in Mare Crisium. There was also peculiar behaviour of the terminator. Source: Midlehurst 1968 catalog TLP ID=16. Ref Web 1962 p62-76. The ALPO/BAA weight=1.
On 2006 Dec 08 at UT 17:32 (+/- 2 min) M. Collins (Palmerston North, New Zealand, 3.5" Maksutov, 40mm eyepiece, seeing III-IV) observed during daylight hours an extremely bright flash south of Godin. It flared up and down over a fraction of a second an appeared three times brighter than the Moon background itself. The ALPO/BAA weight=1.
Plato 1877 Nov 23 UT 22:00? Observed by Crain, Klein, Eng. officer (France?, Cologne, Germany, England?, 6" refractor?) "A luminous triangular object on floor & each craterlet on floor outlined as a lum. pt. (indep. confirm.?)" NASA catalog weight=5 (very high). NASA catalog ID #199. ALPO/BAA weight=4.
On 1955 Oct 04 UT 22:00 Dubois and Kozyrev (Crimea, Soviet Union, 50" reflector) observed the following in Aristarchus crater: "Low disprsion (d=.13 whereas on Oct 28 & Nov d=0.03) Spectogram showing emiss. in central part nr. H&K". Cameron says that this is a confirmation of the previous Bartlett TLP? The Cameron 1978 catalog ID= 619 and weight=5. The ALPO/BAA weight=5.
Pico 1976 Aug 13/14 20:50-01:00, 03:15 Observed by Foley? or Findlay? (England, S=E) "Dark line to the E. (IAU?) of Pico obs. & persisted till 0100h. On 14th the whole area around Pico was gray & diffused. At 0315h detail reappeared & NW corner sparkled. Small brilliant spot appeared due N. of it & the albdeo exceeded Aristarchus (=9+ ?)" NASA catalog weight=3 (average). NASA catalog ID #1443.
Aristarchus 1969 Nov 27 UT 20:00? Observed by Miles (coventry, England, 5" refractor, x120) "Strong pink color in N. part; spectacular strong blink. Did not notice obscur. Bands were vis." NASA catalog weight=4 (high). NASA catalog ID #1227.
Aristillus 1939 Jul 06 UT 05:00 Observed by Haas? (NM?, USA, 12" reflector?) "Dark area in W. part of floor was I=1.3 but other dates were brighter. or same. yet cond. similar (see #454, 459 & 461)" NASA catalog weight=4 (good). NASA catalog ID #450.
Aristillus 1939 Sep 03 UTC 05:00 Observed by Haas? (New Mexico?) "Dark area in W. part of floor was I=4.0, comp. with I=1.3, & I=3.7 (see # 450, & #454). Used different telescope, but can't explain diff. in albedo, since phase is similar in 2 & dist. from term. similar in all (normal?)." NASA catalog weight=4 (good). NASA catalog ID #459.
Fracastorius 1975 Jul 27 UT 22:45 Observed by Robinson (Teignmouth, England) "Blink seen. Floor brighter in red than in blue. Suspects colour is spurious". NASA catalog weight=1 (very low). NASA catalog ID #1410.
Plato 1975 Jul 27 UT 22:45 Observed by Robinson (Teignmouth, England) "Blink seen. Floors brighter in red than in blue". NASA catalog weight= 1 (very low). NASA catalog ID #1410.
Theophilus 1975 Jul 27 UT 22:45 Observed by Robinson (Teignmouth, England) "Blink seen. Floor brighter in red than in blue". NASA catalog weight=1 (very low). NASa catalog ID #1410.
On 1979 Jul 14 at UT 00:24-01:10 P. Madej (Huddersfield, UK, 15cm reflector, x35, x52, x73 and x110, seeing IV-V, transparency very good). Note that the observing date was also written as Jul 18th in the original report? Puiseaux was very clear in white light, but could not see the cenrtral peak. The central peak though was visible through a Waretten 15 (yellow) filter. The ALPO/BAA weight=1.
Aristarchus 1956 Jul 28 UT 05:20-05:55 Observed by Bartlett (Baltimore, MD, USA, 5" reflector, x180, S=5, T=4) "Vivid blue- viol. gl. on c.p., band across E. floor, & EWBS, E. & NE wall". N.B. The effect had vanished by 07:20UT. NASA catalog weight=4. NASA catalog ID 646. The ALPO/BAA weight=2.
On 1975 Jul 29 at UT 00:00 Fraser (England, 6" reflector, x70) and Howick (England, 3.5" reflector) observed the occultation of 51 Pisc. at emersion - Fraser saw a flash or spike of liht which proceeded emersion of primary by 0.4sec. The 9.0 mag companion appeared some moments later. Howick at 1 km away, with 3.5" reflector noted nothing unusual. Cameron says that no 3rd companion is known. The Cameron 1978 catalog ID=1411 and weight=2. The ALPO/BAA weight=1.
Alphonsus 1980 Jul 04 10:35-10:48UT Observed by B. Hobdell (St Petersberg, Florida, 6cm refractor and 20cm reflector. x130. Seeing Antoniadi I) "A dark discolouration was seen on the east floor, adjacent to the central peak and the dark area on the west floor directly south of the prominent dark area. Hobdell thinks it was a small crater on a secondary rill with slight venting discolooration, seen in Orbiter pictures. A sketch was made and the BAA alerted. The sketch matches the dark spots in Alphonsus (normal aspects?)" cameron comments that the sketch looks like the aspect in the Lick composite photos. Foley comments that dark at this lunar age is not normal. A UK observation made 14 hours later looked normal. Cameron 2006 catalog extension ID=99 and weight=2. ALPO/BAA weight=2.
Vitello 1939 Jul 10 UT 09:30 Observed by Haas? (NM? USA, 12?" reflector) "S.part of dark area was I=2.5 but diff. values other times. (see #453, &457). Cond. were similar" NASA catalog weight=4 (high). NASA catalog ID #452.
On 1979 Jul 18 at UT 00:24-01:10 P. Madej (Huddersfield, UK, 15cm reflector, x35, x52, x73 and x110, seeing IV-V, transparency very good). Note that the observing date was also written as Jul 14th in the original report? Puiseaux was very clear in white light, but could not see the cenrtral peak. The central peak though was visible through a Wratten 15 (yellow) filter. The ALPO/BAA weight=1.
On 1975 Sep 29 at 21:15-21:55UT P.W. Foley (Kent, UK, using a 12" reflector, x200, seeing III), saw colour on Plato - blue on the inner south west rim and red on the inner south east rim. No colour was seen elsewhere on the Moon. This was a BAA Lunar Section Observation. ALPO/BAA weight=2.
Vitello 1939 Jul 11 UT 09:30 Observed by Haas? (NM, USA, 12"? reflector) "S. part of dark area was I=2.5, but diff. values other times. (see #453, & #457). Cond. were similar." NASA catalog weight=4 (high). NASA catalog ID #452.
Aristarchus 1897 Sep 22 UT 00:41 Observed by Molesworth (Trincomali, Shri Lanka, 9" reflector, conditions very good) "A Glimmering knotted streak seen beneath and parallel to the W wall. At the centre of the E. Edge of the shadow was another faint glowing effect – probably coincident with the central peak. The crater was more than half filled with shadow." NASA catalog weight=3. NASA catalog ID #290. ALPO/BAA weight=2.
Alphonsus 1966 Apr 17 UT 05:06 Observed by Cross (England) "Blink on SW floor of Alphonsus (moon rise @ 04:20, rotating filterblink rechnique without image tube that Tridant and Corralitos had)." NASA catalog weight=3 (average). NASA catalog ID #928
East Limb 2012 Oct 13 UT 23:36:32 (+/-5 sec) A. Chitaylo (Novokuznetsk, Russia)imaged a bright point just slighty below the equator, a bright point on the eastern limb of the Moon during Moon rise. It was not a hot piXel on the CCD camera. It was not visible in other images from the Moon rise sequence. ALPO/BAA weight=1.
On 1969 Nov 12/13 at UT23:30-01:30 Celis et al. (Valparaiso, Chile) - one observer saw Aristarchus with bluish scintillations occuring in an irregular way - Apollo 12 watch. The Cameron 1978 catalog ID=1207 and weight=1. The ALPO/BAA weight=1.
On 1987 May 03 at UT 19:00-19:30 H. Miles (Cornwall, UK, 5" refractor, x30) found the Earthshine to be both pink and bright with prominent features clearly visible. A "brilliant" star-like point was seen in Aristarchus crater. There was another, albeit less bright spot near Darney-Agatharides. Spots pesisted despite various tests. Foley also confirmed that the Moon looked pink to him as well. The Cameron 2006 catalog ID=298 and weight=1. The ALPO/BAA weight=1.
On 1987 May 03 at UT 19:00-19:30 H. Miles (Cornwall, UK, 5" refractor, x30) found the Earthshine to be both pink and bright with prominent features clearly visible. A bright spot was seen near Darney- Agatharides. An even more "brilliant" star-like point was seen in Aristarchus crater. Spots pesisted despite various tests. Foley also confirmed that the Moon looked pink to him as well. The Cameron 2006 catalog ID=298 and weight=1. The ALPO/BAA weight=1.
On 1983 May 15 at UT20:30-21:05 P.W. Foley (Kent, UK, 12" reflector) was unable to see Aristarchus in Earthshine, though other craters were clearly visible. However by 21:30 the Cooks could clearly see Aristarchus. The Cameron 2006 catalog ID=215 and the weight=0. The ALPO/BAA weight=2.
W.limb 1983 May 15 UT 20:30-21:00 R.Moseley (Coventry,UK, 6" reflector, x60) observed a faint but extensive brightening of the W.limb, perhaps a little stronger at PA=80-90 deg. No other features seen in Earthshine. Observation confirmed br R.Martiott (Northampton, UK, 8.5" reflector). ALPO/BAA weight=1.
On 1966 Apr 24 at 21:30UT R.Livsey (Scotland, 6" reflector at x275) observed that Aristarchus was "fluorescent" in Earthshine. It is uncertain whether the description of "fluorescent" should be involve this observation being categorized as a TLP, however just for safety it will be assigned an ALPO/BAA weight=1. This was a BAA Lunar Section report.
On 1987 Mar 04 at UT 19:03-19:47 H. Miles (Cornwall, UK, 5" refractor, x30, S=clear) found at 19:03 that Aristarchus was exceptionally bright (even without blocking out the sunlit side of the Moon), being the most easily seen crater on the Moon, and this was despite the sky not yet being dark. The crater had faded by 19:20UT and at 19:47UT Earthshine was no longer visible. CED brightness measurements were made and were less than usual and the inside of the crater may have had a blue/gray colour (unclear from the Cameron 2006 catalog description). The Cameron 2006 catalog ID=299 and the weight=2. The ALPO/BAA weight=2.
On 1983 May 16 at UT20:35-22:10 P.W. Foley (Kent, UK) noted that Aristarchus was dull in Earthshine (UT21:36-21:40). The floor was a luminous rose/violet colour. The Cameron 2006 catalog ID=219 and the weight=0. The ALPO/BAA weight=1.
On 1880 Nov 06 at UT 20:00 an unknown observer observed a TLP at an unknown location on the Moon. The Cameron catalog has an entry for this date and time but does not specify the location, the observer or what was seen. The Cameron 1978 catalog ID=218 and the weight=0. The ALPO/BAA weight=1.
On 1981 Jun 07 at UT02:30-03:00 B. Hobdell (St Petersberg, FL, USA, 10" and 4" reflectors, seeing=I) at 02:30UT saw a flash from Aristarchus and another one from Schroter's valley. By 02:45UT Aristarchus was starting to be difficult to see and had occasionally a bluish cast. By 03:00UT the crater could only barely be seen. This was odd because visibility on the Earthlit side was really rather good. The Cameron 2006 catalog ID=143 and weight=0. The ALPO/BAA weight=1.
On 1981 Jun 07 at UT02:30-03:00 B. Hobdell (St Peterberg, FL, USA, 10 and 4" reflectors, seeing=1) saw Copernicus to be very bright in blue. Clarty of Earthsine was exceptional tonight. The Cameron 2006 catalog ID=143 and weight=0. The ALPO/BAA weight=1.
On 1969 Nov 11/12 at UT23:30-01:00 Mitchell, Celis and Marti (Paso Hondo, Chile, 10" refractor, x96, 4" refractor, x80, 3" refractor, x60, seeing = excellent) observed Aristarchus with a blue centre and irregular form, alternating with normal aspects. Some opacity (independent confirmation?) - Apollo 12 watch. The Cameron 1978 catalog ID=1208 and weight=3. The ALPO/BAA weight=3.
On 1983 May 17 at UT20:13-20:40 P. Madej (Huddersfield, UK, x38 and x63) found that Aristarchus was normal in appearance, but at 20:19 a blood red disk was seen as bright as a 6th magnitude star. The colour did not vary but the brightness changed from 4 to 8 over a 1.5-3min period, on the south west wall. Foley (Kent, UK, 12" reflector)observed Aristarchus at 22:10 and noted that it had the same rose-violet colour as had been seen by him a day earlier. The Cameron 2006 catalog ID=220 and the weight=0. The ALPO/BAA weight=3.
On 1981 Jun 08 at UT01:48-02:45 B. Hobdell (St Petersberg, FL, USA, 10 and 4" reflectors) could hardly see Aristarchus crater, however at 01:48UT it brightened in blue for about 3 minutes. Then at 02:20UT there was a bright flash, and by 02:25UT the crater was very bright, but by 02:45UT it was no longer visible. Cameron 2006 catalog ID=144 and weight=0. The ALPO/BAA weight=1.
On 1988 Nov 14 at UT 17:25-18:30 H. Miles (St. Minver, Cornwall, England, UK, 5"refractor? x60 and x120) found Aristarchus to be a white ill-defined circular patch. At 17:45UT it was a lot brighter (Cameron comments that this might have something to do with sky darkness). In contrast, Copernicus was just seen as a white patch and the Jura mountains could be seen (not as bright). Aristarchus grew brighter over time and there was a bright point on the west wall (seen at x60 and x120). Ït was fainter at 1854 & < At 1830. (Foley) said Earthshine cond. Superb with many regions clearly seen, but Aris. was dull. (Cooks) in hazy condition could not detect Aris." The Cameron 2006 catalog ID=338 and weight=0. The ALPO weight=1.
On 1983 May 17 Foley (Kent, UK, 12" reflector)observed Aristarchus at 22:10 and noted that it had the same rose-violet colour as had been seen by him a day earlier. The Cameron 2006 catalog ID=220 and the weight=0. The ALPO/BAA weight=2.
Daniell 1979 Apr 02 UT 21:45-22:14 Obseved by Madej (Huddersfield, UK, 158mm reflector, f/4.2, x36-110, seeing II-III) "Obscuration seen" BAA Lunar Section Report. Cameron says that this was a bright white cloud that covered three quarters of the crater. A yellow filter was used at 21:48, but the cloud was still white, albeit thinner (at x110). By 22:14UT the TLP was barely visible and again no colour seen. Buczynski (Lancaster, UK, seeing = poor) saw spurious colour. Later (22:31- 22:46UT?) Mellor obtained some photos, but these revealed no colour. The Cameron 1978 catalog ID=48 and the weight=3. The ALPO/BAA weight=2.
Linne 1867 Aug 06 UT 21:00? Observed by Buckingham (England?) "Crater in darkness, he saw a "rising oval spot". Other obs. saw it as a triang. Bold black spot pointing to earth, slowly diffused white & drift of white on slope of pyramid. (indep. confirmation?)" NASA catalog weight=5 and catalog ID #155. ALPO/BAA weight=2.
Near Ross D (23E, 12N) 1964 May 18 UT 03:54-04:53 Observed by Harris, Cross et al. (Whittler, CA, USA, 19" relector x720, 8" reflector x322, S=G) "White gas obscuration. Moved 20mph, decreased in extent. Phenom. repeated. Drawing." NASA catalog weight=5 (very high). NASA catalog ID 811.
Theophilus 1964 May 18 UTC 01:05-01:15 Observed by Dieke (Baltimore, MD, USA, 6" refractor, x125) "Crescent of crsimson color on SW between rim & flor. Was not present at 0500, nor did it reappear from 0115 to 0245h" NASA catalog weight=3 (average). NASA catalog ID #812.
White spot near Censorinus 1966 Dec 18 UT 23:40-23:46 Observed by Enie (Pittsburgh, Pennsylvania, USA, 8" reflector x100, S=G) "Attention drawn to pink color in this usually white patch. Brightened to a light reddish tinge for 2 mins, then faded back to pink, then to white, Sketch." NASA catalog weight=4 (high). NASA catalog ID #1002.
Apianus D On 2011 Oct 03 UT 21:00-21:20 F. Power (Meath, Ireland, 11" SCT) observed changing colours (blue, white, and red) on the inner western rim of this crater. He changed eyepieces and moved the scope around to look at dufferent parts of the Moon, but nowhere else exhibited anything similar. As another test he asked his wife to have a look without telling her what he was seeing. She confirmed the same effect. 5 digital camera images had been taken. Most of these were out of focus and the first one was saturated, however one of them showed a approximately 35 km long, by 11 km wide (at the north) lopsided carrot shaped orange colour to the western rim of Apianus D. No similar strong colour could be seen anywhere else on the image, nor on the other 4 images. This TLP is being given an ALPO/BAA weight of 1 as the Moon was low, but an image taken looks interesting.
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.
On 1978 May 14 at UT21:30-22:52 P.W. Foley (Kent, UK, 12" reflector, seeing II and transparency excellent, no spurious colour) observed Aristarchus to be very bright in Earthshine and bluish. The CED brightness measuring device gave a very bright reading of 0.9, the brightest he had ever seen ir before was 0.3. Cameron 2006 catalog ID= 29 and weight=3. ALPO/BAA weight=2.
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.
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.
Plato 1925 Jun 20 UT 20:00? Observed by Markov (Russia) "Light bands in bottom seen in shadow & did not seem to be elevations. These have been seen 5X from 1913-1922." NASA catalog weight=3. NASA catalog ID #391. ALPO/BAA weight=2.
Plato 1964 May 20 UT 01:00-01:30 Observed by Bartlett (Baltimore, MD, USA, 2.4" refractor x117, S=6, T=5). "Orange-red color on W. wall. Vivid" NASA catalof weight=4 (high). NASA catalog ID #813.
Alphonsus 1966 Apr 28 UT 21:58 Observed by Smith (England, 10" reflector) and Corralitos Observatory (Organ Pass, NM, USA, 24" reflector+Moon Blink) "Reddish patches, (not confirmed at Corralitos with MB tho they give feature as Gassendi in their report)." NASA catalog weight=2. NASA catalog ID #930. ALPO/BAA weight=1.
On 1969 Nov 18 at UT 00:30-02:30 W. Cameron (Greenbelt, MD, USA, 12" reflector, x80 and x320) using a low power eyepiece, observed that bright craters (but not all of them) "glittered like diamonds". These craters were several on the terminator, Proclus, Censorinus, Manillius, Menelaus and Dionysius. The glitter effect was on the west wall crest -- like stars. Higher power revealed these areas to be bright but not star-like (nor glittering). The Cameron 1978 catalog ID=1212 and the weight=1. The ALPO/BAA weight=1.
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.
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.
Aristillus 1939 Sep 23 UT 01:00 Observed by Haas? (New Mexico?, USA, 12" reflector?) "Dark area in W. part of floor had I=1.3. comp with I= 1.3, 3.7, 4.0 in #450, 454, & 459, respectively. (albedos disagree at same phases, so are real anomalies). (normal here?)." NASA catalog weight=4 (high). NASA catalog ID #461.
On 1987 Mar 09 at UT20:00 M. Mobberley (Sussex, UK) obtained some video of Mons Pico - apparently these show the mountain with a puzzling appearance (not sure whether it was the observer who claimed this or some one who analyzed the tape). The Cameron 2006 catalog ID=300 and the weight=5. ALPO/BAA=1.
Alphonsus 1966 Apr 20 UT 22:28 Observed by Smith (Nottingham, England, 10" reflector) Reddish patch possibly detected on SE flank of central peaks, but more dubious than that from 28th Apr. ALPO/BAA weight=1.
On 1936 Oct 25 at 01:35 UT W. Haas (Alliance, OH, USA, 12" reflector) saw small bright spots on the floor of Eratosthenes, (Pickering's atlas 9A, col. 30deg, shows no spots - according to Cameron). Cameron 1978 catalog TLP=417 and weight=4. ALPO/BAA weight=1.
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.
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.
Gassendi 1966 Apr 30 UT 21:30-23:28 Observed by Sartory, Ringsdore (England, 8.5" reflector, S=E), Moore, Moseley (Armagh, Northern Ireland, 10" refractor, S=VG), Coralitos Observatory (Organ Pass, NM, USA, 24" reflector, Moon Blink) "English moon blink system detected red spots with vis. confirm. Ringsdore says no color but saw obscuration. (LRL 60-in photos showed nothing unusual by my casual inspection). Indep. confirm. (even E. wall was in dark). Corralitos did not confirm by MB." N.B. event had finished by the time Corralitos came on-line. NASA catalog weight=5. NASA catalog ID #931. ALPO/BAA weight=4.
Eratosthenes 1968 Nov 01 UT 01:50-02:06 Observed by Chilton (Hamilton, Canada, 12" reflector, 300x) "Red glow in the crater. Weak blink beyond ESE (IAU?) wall. Visually, area would not focus & gave impression of fog cascading down slope, but no motion was vis. (Moore has misprint in time in his cat. extension -- should be 0150-0206)." NASA catalog weight=3. NASA catalog ID 1106. ALPO/BAA weight=3.
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.
On 2011 Oct 07 UT 21:45 Gassendi observed by P. Grego (St Dennis, UK,300m Newtonian, x150, seeing III, intermittent cloud) - whilst producing some sketches of the crater - observer noticed a faint point of light inside the shadow filled interior, two thirds of the way out from where the central peaks should have been, towards the SE rim. Some uncertainty in being sure about this spot and after interuption by cloud it was not seen later that evening. ALPO/BAA weight=1 to refelct uncertainty of observer.
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."
Gassendi 1939 Sep 25 UT 01:30 Observed by Haas (New Mexico? 12" reflector?) "NE part pf c.p. had I=9.4 comp. with I=6.4 (normal? in # 458. under similar obs. cond. (& phase. thus real diff.)" NASA catalog weight=4 (high). NASA catalog ID #462.
On 1980 Jul 24 at UT02:00 F. Graham (East Pittsburgh, PA, USA, 6" reflector) took some photos (albeit out of focus) that showed a bright spot on the west rim. Cameron comments that this spot was sharp compared to the rest of the photograph, so was probably a photographic artifact. The effect was not seen in the finder scope. The Cameron 2006 catalog ID=103 and weight=2. The ALPO/BAA weight=1.
M. Cook of Frimley, UK observed a brightening of the crater during this observing session. The cameron 2006 extended catalog ID=346 and weight=3. ALPO/BAA weight=2.
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.
Aristarchus 1966 May 01 UT 21:55-22:45 Observed by Paterson, Brown, Sartory, Ringsdore (England, 12" reflector x252 for the former and 8.5"? reflector for the latter) "Eng. moon blink system detected red spots with vis. by all but Ringsdore. Brown saw intense white spot NW of crater wall" NASA catalog weight=5. NASA catalog ID 933. ALPO/BAA weight=4.
Gassendi 1967 Mar 22 UTC 19:39-19:43 Observed by Mosely (Armagh, N. Ireland, 10" refractor, x360) "Red color & blink strongly suspected in small area centred on junction of 3 clefts 1/2 way from c.p. & ESE wall. Well-defined & did not note change during obs. period. Clouds terminated obs. till 2120 when it was not seen." NASA catalog weight=3 (average). NASA catalog ID #1018.
On 1989 Sep 12 at UT00:58-02:25 D. Darling (Sun Praire, WI, USA, 12.5" reflector, x159, S=7/10) observed similar light conditions to 1989 Jul 15. At 02:00 he observed pink on the south west wall of Aristarchus crater. At 01:24UT the Aristarchus ray was yellowish, however the entire Moon had a grey-yellow tinge of colour. Chromatic aberation was observed at 01:56UT. By comparison Gassendi was checked and had no colour. At 02:10 the crater wall of Aristarchus was unusual and was quite different in appearance to rims of other craters. The cameron 2006 catalog ID=375 and the weight=1. The ALPO/BAA weight=1.
G. Ward (a lunar observer for 15 years) observed an area just south west of Mersenius C to be blurred and in a greenish cloud. The green colour was more like that of dead grass than one gets from a neon bulb. The effect was seen from 04:50-04:57UT, but could have been going on before it was first noted at 04:50-UT. Seeing was 6-7/10 4" Refractor (2 element). refractor had been used hundreds of hours before (over a 10 year period) with no similar colour was seen. The observer checked other areas but did not see any similar effects. They also rotated and changed eyepieces, but this made no difference to the TLP. The TLP site seen was picked up on an image taken earlier at 04:47UT by W. Bailley, from Sewell, NJ, USA. Unfortunately the area concerned, a mountain on the image, was saturated and so we cannot tell if a colour was present there and the seeing was poor.
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.
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 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.
Cobra Head 1967 Mar 23 UT 18:40-20:47 Observed by Sartory, Moore, Moseley (Farnham, England, 15" reflector (Sartory) seeing very poor & 10" refractor in Armagh, N. Ireland (Moore & Mosely) x360 - seeing Fair to Poor) "Red patch seen intermittently; moon-blink from 1916-2047h. Position agreed with Sartory who alerted them to Aris. area; checks on others were neg." NASA catalog weight=5. NASA catalog ID 1020. Then Aristarchus 1967 Mar 23 UT 18:40-20:30, 21:30 by Marsh and Farrant (Cambridge, England, 8" reflector, x330). "Suspected colour on SW (ast.) wall. Farrant saw color in crater, completely independently, (inform. suggests same phenom. as seen by Moore & Moseley tho they said Cobra head). NASA Catalog weight=5. NASA catalog ID # 1021. ALPO/BAA weight=3.
Gassendi 1967 Mar 23 UTC 18:40-18:50 Observed by Sartory (Farnham, England, 15" reflector) "Heavy blink on inner S. wall. Moved toward N. at 1845, faded at 1850." NASA catalog weight=3 (average). NASA catalog ID #1019.
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.
Mersenius 1975 Jun 21 UT 21:50-22:45 Observed by McConnell (Northern Ireland, 6" reflector) Moore? (Sussex, Enland, 15" reflector, 5" refractor, S=F), Reading (Rushden, England, ? 14" reflector) and Foley (Kent, England, 12" reflector, S=P) "McConnell saw an obscur. starting at 2150h which disappeared at 2245h. Moore(?) alreted, saw no anomaly in 15 in refl. & 5-in refr. under fair conditions from 2209-2228h. Reading reported neg. fr. 2250-2345h (after phenom.). Foley reported color in it but also a crater to S. of it & Aris., prob. due to seeing conditions." NASA catalog weight=5. NASA catalog ID#1408. ALPO/BAA weight=3.
On 1995 October 6 at UT 21:30 R. Lena (Rome, Italy - a UAI observer, 11.4cm reflector) saw 4 or 5 flashes from Herodotus crater. Light intensities (mag?) ranged from 9 to 8 and they were brighter through a red filter. There is no 2006 Cameron catalog entry for this observation - it has come from the UAI web site. The ALPO/BAA weight=3.
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.
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.
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.
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.
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.
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.
On 1987 Mar 13 at UT 20:52 M. Mobberley (Suffolk, UK, S=VG) obtained some video that shows variation in Aristarchus crater e.g. ä visual oddity in the SE corner" (Foley was interpreting the video). H.Hatfield took some film of the TLP (Unstudied yet). The Cameron 2006 catalog ID= 301 and the weight=5.
On 1987 Mar 13 at UT 20:52 M. Mobberley (Sussex, UK) found that Mons Pico varied in its north east section. This was recorded on video tape. The Cameron 2006 catalog ID=301 and weight=5. The ALPO/BAA weight=2.
Aristarchus 1975 Oct 18 UTC 20:00? Observed by Foley (Kent, England, 12" reflector) "Deep blue-viol. spot in NW (IAU?) interior corner." NASA catalog weight=3 (average). NASA catalog ID #1415.
Godin UT 02:15-03:05 Observed by Porter (Narragansett, Rhode Island, USA, 6" refletor, 45, 90x, S=P?, T=2) "Albedo change in some pts. yellow-orange color on rim. Wondered if it were atmos. LTP albedo= 7,7,7,6.5. Normal albedos=7,7.5,6.5,6.5 for same pts. Nearby plain albedos =6. LTP from 0250-0300h. Intensity normal at first;pts in W. decreased & N.pt increased. No difference in intensity in red filter till suddenly it jumped out & became vis. above the high background albedo. Sketch. He thinks it was atm. seeing" NASA catalog weight=2 (low). NASA catalog ID #1370.
Aristarchus and Herodotus UT 20:00? Observed by Areau (Paris, France, 12" reflector x100) "Maroon color covering the ridge(?) E (ast. ?) & the ridge(?) S. of Herod. In 3 or 5 secs. Cloud disappeared after 10 min." NASA catalog weight=3 (average) NASA catalog ID #1312.
On 1973 Dec 8 UT18:15-18:20 R.Billington (UK, 2" refractor) reported that ristarchus was orange. However 15 minutes earlier, another observer, Livesey made a sketch and did not report any colour. ALPO/BAA weight=1.
On 1979 Aug 06 at 22:24-22:54 P.Madej (Hudersfield, UK, 6" reflector. Purple Wratten 35, and Yellow Wratten 15 filters used) Orange glow seen (at x73) on west side of crater, near the central peak. The central peak was coloured too at x110. At 22:32 (x75) the central peak was brighter than the rest of the area wrough the yellow filter. At 22:34UT at x73 everything looked OK through the purple filter. The TLP was still visible at 22:54. ALPO/BAA weight=1.
Lichtenberg 1951 Jan 21 18:19.2-18:38.5 UT observed by Baum (Chester, England). Tiny red spot noticed initially and then faded. Location of spot 31.403N 66.167W. 20cm refractor x90-x100. Seeing fair-extremely good. NASA catalog assigns a weight of 3. NASA TLP ID No. # 542. ALPO/BAA weight=2.
Schroter's Valley 1955 Jul 03 UT 22:00 Observed by Firsoff (Somerset, England, 6.5" reflector x200) "Drawing contains a star-like pt. at N. part of valley." NASA catalog weight=4. NASA catalog ID #597. ALPO/BAA weight=1.
Schickard 1940 May 20 UT 20:00 Observed by Moore (England, 12?" eflector) "Fog on floor -- milky appearance, less pronounced than on 8/2/39 (see #456)." NASA catalog ID #465. NASA catalog weight=4. ALPO/BAA weight=2.
Plato 1971 Jan 10 UTC 20:17-20:42 Observed by Taylor (Slough, England, 8.5" reflector) "Blink (dark gray to black), 13x3km diam. on E. wall & floor in indentation in wall. Smaller by 2028 h. gone at 2035h. Reappeared at 2028h & gone completely at 2042h)." NASA catalog weight=3 (average). NASA catalog ID #1282.
On 1964 May 26 UT 04:10-04:35 Bartlett (Baltimore, MD, USA, S=5, T=5). observed that Aristarchus had a strong blue-violet glow on the east wall and EWBS, with a strong violet tinge on the nimbus. Crater was hazy, could not focus it in red, green or blue light. The Cameron 1978 catalog ID= and weight=4. The 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.
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.
On 1984 Dec 07 at UT 19:30-23:30 M. Mobberley (St Edmunds, UK, seeing=IV-V, transparency=good, spurious colour seen) found 2 bright pathces on the east rim on alternate sides of a bright region. The band from the central 16km wide region was dark on the east side. Foley (Kent, UK, 12"reflector, seeing=II-III) found Aristarchus to be not as bright as normal, apart from the band that Mobberley found (1 hour later). The dark regions were a murky green colour (bright through green, blue and yellow filters and dark through red and orange filters). Cook (Frimley, UK, transparency=excellent, CCD camera used) found a bright "bulge"on the eastern side. Apparently data suggests that the band was brighter in red than in near IR light. Cook's calibrated brightness measurements suggest that there was no change in brightness over the crater with time. Two other bright points were seen: one at the Cobra's Head and another half way between the east rim of Aristarchus and passes Herodotus. Wratten 29 (deep red), Wratten 87 (near IR) and combined Wratten 29 and Wratten 87 were used. In the red Wratten 29 filter the brightness falls at22:20 at Shroters valley and then rises in the bright ray. They return to normal at 22:30UT. There was however a lot of measurement noise from the brightness readings of points B and D. The Cameron 2006 catalog ID=256 and the weight=5. The ALPO/BAA weight=3.
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.
Archimedes 1940 Aug 18 UT 03:25 Observed by Haas (NM?, USA, 12" reflector?) NE outer wall had I=5.0, but was I=2.5 on June 20 (see #467) (similar colong.)" NASA catalog weight=4. NASA catalog ID #471. ALPO/BAA weight=2.
Proclus 1972 Nov 20 UT 20:20 Observed by Farrant (Cambridge, England, 8.5" reflector, x178) "Dark patch in crater. Disappeared by next nite. The normal ring seemed thickened. On Dec. 7. the crater appeared bright. Drawings. (prob. real LTP, nr. FM)" NASA catalog weight=3 (average). NASA catalog ID #1350.
Gassendi 1966 Dec 27 UTC 06:30-07:05 Observed by Kelsey (Riverside, CA, USA, 6" reflector?) "Very faint blink on SW (ast. ?) floor & on another N. of it on NW floor. Obs. considers obs. very suspect" NASA catalog weight=1 (very poor). NASA catalog ID #1006.
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 1983 Jan 29/30 at UT20:35-01:00 Sykes (UK?) observed that Linne appeared to brighten for approximately 20 min and had the appearance of a point (confirmed). This observation was made during a major Torricelli B TLP. The Cameron 2006 catalog ID=198 and the weight=5. The ALPO/BAA weight=2.
Torricelli B 1983 Jan 29/30 UTC 20:35-02:30 Observed by Foley (12" reflector, seeing Antoniadi II, Transparency=good, no spurious colour seen), Moberley (14" reflector, seeing Antoniadi II, transparency excellent, spurious colour strong), Cook, J & M (12" reflector, seeing Antoniadi II-III, transparency moderate). All observers based in southern England. "Initially crater brightest feature on the Moon, then it faded. Strong colour also seen by all observers e.g. green-blue to violet. Report of observations written up in JBAA Vol 100, No. 3, p117 123, (2000) - probably one of the best reorted TLP". The Cameron 2006 catalog ID=198 and weight=5. The ALPO/BAA weight=5.
On 1983 Jan 29 at UT22:09 M.Mobberley (Sulfolk, UK, 14" reflector) noted that Arago B had a slight tinge of violet colour, and was a lot less (bright?) than Torricelli B's blueness. Other craters checked but were not showing any blue colour. The Cameron 2006 catalog ID=198 and weight=5. The ALPO/BAA weight=3.
On 1983 Jan 29 at UT22:09 M. Mobberley (Suffolk, UK), found that Moltke crater was "exceptionally bright". Other craters (apart from Arago B Torricelli B etc) appeared normal. The Cameron 2006 catalog ID=198 and the weight=5. The ALPO/BAA weight=2.
On 1983 May 28 at UT 01:50-03:00 K. Marshall (Medellin, Columbia) observed the whole region of Aristarchus, Herodotus and Shroter's Valley all to have a brightness of 3 and all blue and impossible to focus on (he had never seen it like this before). Also the interior of Aristarchus was invisible. Brightness measurement taken and a sketch was made. The Cameron 2006 catalog ID=222 and the weight=3. The ALPO/BAA weight=3.
Proclus 1972 Nov 21 UT 21:30 Observed by Farrant (Cambridge, England, 8.5" reflector, x130) "Thickened bright ring remained, but the dark patch had disappeared. (dark patch prob. real temporary phenom. as it was seen nr. FM when contrasts are strongest, yet disappeared" NASA catalog weight=1 (very low). NASA catalog ID #1351.
LaLande 1973 Jul 17 UT 03:30-03:45 Observed by Galgoey (Washington, NJ, USA, 2" refractor x46, x117), S=VG, T=5) "Star-like pt., variations, 1- 2s, seen only at 40x, not at higher powers. LTP albedo =10, normal=8, nearby plain =6 (geom, instrum. & atm. & refl. material at site effects?)" NASA catalog weight=1 (very low). NASA catalog ID #1371.
(Baltimore, MD, USA, 5" reflector x180) "Strong violet glare on E. rim, changing to brown. At 0220 dark viol. in nimbus, at 0235 viol. changed to brown. At 0255 viol. suddenly reappeared, but faded to invis. at 0300. Again at 0308 reapp. Only time he ever saw such color changes." NASA catalog weight=4. NASA catalog ID 583. ALPO/BAA weight=3.
Gassendi 1940 Aug 20 UT 03:25 Observed by Haas (NM?, USA, 12" reflector?) "Largest bright spot on SE pt. of floor had I=8.6 (real changes? see @ '#649, 474, & 475, all similar change)." NASA catalog weight=4. NASA catalog ID #472. ALPO/BAA weight=2.
1824 Dec 08 UTC 00:00? Observed by Gruithuisen (Munich, Germany) "Bright fleck in SE part of crater" NASA catalog weight=4 (good). NASA catalog ID #104. ALPO/BAA weight=2.
Aristarchus 1947 Nov 30 UTC 00:00? Observed by Favarger (France?) "3 bright points on inner w. slopes." NASA catalog weight=2. NASA catalog ID #499. ALPO/BAA weight=1.
On 1983 Jan 30 at UT 23:45 Chapman (England, UK) observed that Censorinus was low in brightness. The Cameron 2006 catalog ID=199 and the weight=4. The ALPO/BAA weight=2.
On 1983 Jan 30 at UT 23:45 P.W. Foley (Kent, UK, 12" reflector) measured that the brightness of the region around Toricelli B was 2.3 (high) and there was a slight blue colour. The Cameron 2006 catalog ID= 199 and the weight=4. The ALPO/BAA weight=2.