1950 Nov 14 UT23:38 L.T. Johnson (La Plata, MD, USA, 10" reflector, x179) observed a mag 10 flash in Earthshine. ALPO/BAA weight=1.
On 1984 Jan 08 at UT16:30-18:40 P. Moore (Selsey, UK, seeing=III) could not see Aristarchus in Earthsine, despite, Tycho and the mare regions being plainly visible. Foley (Kent, UK) found Aristarchus to be a "soft blue patch" and North (seeing IV-V) found the crater to be one of the brightest features on the Moon. The Cameron 2006 catalog ID=237 and the weight=0. The ALPO/BAA weight=1.
On 1990 Aug 26 at UT 02:30-03:30 W. Cameron (Sedona, AZ, USA, 8" reflector, x110 and x220) observed that Proclus and Piccolomini craters both had a pink colour inside them. At a higher magnification of x220 Piccolomini was still pink and it was stronger on the central peak's wesern side. The cameron 2006 catalog ID=407 and the weight=3. The ALPO/BAA weight=1 as the Moon was not above the horizon at the date and UT given.
On 1990 Aug 26 at UT 02:30-03:30 W. Cameron (Sedona, AZ, USA, 8" reflector, x110, x220, seeing=good) observed that the north wall of Proclus crater was the brightest part of the crater, indeed very bright. Proclus and Picolomini had pink colours inside them. CED brightness measurements were as follows: "Proc. at 100x 4.0, 4.0; at 200x 3.4, 3.4; Theop. 3.5, 3.9; 3.5; Herc. 2.5, 2.75; 3.5; Atlas 2.8, 2.5, 3.0; Posidonius 3.0." The Cameron 2006 catalog ID=407 and the weight=3. The BAA/ALPO weight=1 as the Moon was not above the horizon at the UT given.
On 1990 Aug 26 at UT 02:30-03:30 W. Cameron (Sedona, AZ, USA, 8" reflector, x110 and x220, seeing=good) observed that the west wall of Theophilus crater was red (on terminator). However Posidonius was also on the terminator and no colour was seen elsewhere along the terminator, however Proclus and Piccolomini had pink interiors. At a higher power of x220 a prismatic effect was seen on the terminator in Theophilus and opther craters - "even on W rim of a crater due W of Theoph.". CED measurements of Theophilus... 3.5, 3.9, 3.5. The Cameron 2006 catalog ID=407 and the weight=3. The ALPO/BAA weight=1 because the Moon was below the horizon at this time.
On 1981 Apr 09 at UT 19:44 M. Price (Camberley, Surrey, UK, 6" reflector, 58x and 117x) saw a 4 sec brightening in Aristarchus in the clear Earthshine. Other features visible were: Grimaldi and some mare. Foley found the crater to be "luminous & translucent". Cameron 2006 catalog ID=129 and weight=0. ALPO/BAA weight=1.
On 1931 Feb 22 at UT 20:30 Joulia (Castelnaudary, Aude, France?) observed in the Aristarchus region: "Reddish-yellow glimmer of light, very variable with nearly complete extinction. (similar to Herschel's 1787 & Tempel's 6/10/1866 obs.)". The Cameron 1978 atalog ID=399 and weight=3.
On 1972 Dec 11 at UT22:28 Cernan, on board Apollo 17, saw a flash on the east rille in Mare Orientale (88W, 20S) as he orbited the Moon. The Cameron 1978 catalog weight=1354 and the weight=3. ALPO/BAA weight=2.
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.
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.
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.
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.
Alphonsus 1965 May 08 UTC 05:47-05:59 Observed by McLaria (Huntsville, Alabama, USA, 16" reflector, S=9) "Light flashes on c.p. color detected by Trident M.B." NASA catalog weight=5 (very high). NASA catalog ID # 875.
On 1997 Apr 14 at UT 20:00-22:00 F. Paolo (Legnano, Italy) photographed a lunar flare on the lunar limb.
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 1993 Jun 27 at UT 19:55-20:21 and 20:24-21:04) D. Kane (England? UK, 4" refractor) discovered that the central peak of Alphonsus crater was very bright. The central peak was also brighter in red than in blue light. However G. North (Herstmonceux, UK, 6" reflector, x135, seeing V-III) and M. Cook (Frimley, UK, 4" reflcrctor, x10, seeing=III) observed that the central peak was normal, however they did not use filters. The Cameron 2006 catalog ID= and weight=3. The ALPO/BAA weight=2.
Proclus 1972 Aug 17 UT 20:05-21:10 Observed by Haiduk (13.25E, 52.5N, 60mm refractor, S=1, T=3) "Well visible bright area at the NE wall, end of event uncertain for seeing became poor" Hilbrecht & Kuveler Moon & Planets (1984) Vol 30, pp53-61.
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.
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.
Aristarchus 1976 Jun 06 UT 21:30-21:40 S.Spencer and R. Hunt (60mm refractor, x150 and x60) both observed red on the SW corner of Aristarchus. ALPO/BAA weight=1.
On 1990 Aug 30 at UT02:11-02:36 D. Darling (Sun Praire, WI, USA, 3" refractor, x90, seeing conditions: "at,. boiling") noted a coloured area on the west wall of Copernicus that was unusual in appearance - however other craters along the terminator had a similar effect. There was also a "dazzling bright spot on the E. rim and he witnessed 6 flashes from the lighted part of Copernicus over a very short time interval. Cameron comments that the colour may well have been dur to chromatic aberation because a refractor was used. The Cameron 2006 catalog ID=408 and the weight=0. The ALPO/BAA weight=1.
On 1990 Aug 30 at UT 02:11-02:36 D. Darling (Sun Praire, WI, USA, 3" reflector, x90, atmosphereic conditions: boiling) found "N rim of Proc. bright interior uniform gray". The Cameron 2006 catalog report is slight unclear as the description for thnis 1990 Aug 30 TLP also includes Copernicus and Censorinus in the list of TLP craters. So one description which might refere to Copernicus, could possibly have been meant for Proclus, namely: "Dazling bright spot on E rim. Rotated eyepiece but no change. N rim of Proc.......". The Cameron 2006 catalog ID=408 and weight=0. The 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.
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.
On 1980 Jul 22 at UT20:08-21:50 G.North (Sussex, UK, 8" reflector, x144 and x207, seeing III-V and transparency fair) suspected an obscuration on the north and north west wall. The effect came and went. May have been due to seeing and image contrast? Cameron 2006 catalog ID=101 and weight=1. ALPO/BAA weight=1.
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.
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.
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.
Gassendi 1976 Oct 04 UT 20:55-20:58 Observed by Robinson (Devon, England) - observer noted that the east outside wall was bright in red and normal in blue. Note that the Moon was 30 deg above the horizon at the time of the observation. The crater returned to normal at 20:58. Also seen by Moore (Selsey, UK) and Foley (Kent, UK). At 21:25-21:50 D. Sims (Dawlish, UK, 25cm reflector, x300, seeing IV and some cloud at times) noticed a possible obscuration over the southern part of Gassendi. He had been observing earlier at 18:40-19:30 but had not detected a TLP in Gassendi then. 22:11UT Robinson notices that the spot outside the east wall is again bright in red., though by 22:25 it had faded and was gone by 22:28UT. The Cameron 1978 catalog further quotes: "Vivid red spots & general red color seen around rim by 2 obs. At 2209h blood red small area was seen. 1 h later the most westerly (IAU?) of the peaks had become hazy white all other areas were sharp. (Indep. confirm.)." Cameron 1978 catalog weight=5 and catalog ID #1454. The ALPO/BAA weight=3.
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.
Gassendi 1976 Oct 04 UT 21:30 P. Moore (Selsey, UK, x400, seeing poor) observed redness in the c.p. area. The ALPO/BAA weight=1.
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.
Conspicuous bright spot seen on 6th. Also seen on 7th, absent on 8th. Cloud-like effect where light had been (on 8th). Cameron 1978 catalog TLP ID No.=139 and weight=3.