In 1940 Dec 02 at 00:00? Vaughan (Des Moines, Iowa, USA, 3" reflector) observed Aristarchus in the dark part as a bright spot. The cameron 1978 catalog ID=480 and weight=2. The ALPO/BAA weight=1.
On 1969 Jul 16 at UT 21:30-21:32, 21:45 R. N. da Silva (Parnaiba, PI, Brazil, 10" reflector) noticed that on the dark part of the Moon, Aristarchus was very bright. However and Cameron (Greenbelt, MD, USA, 12" reflector) at 01:00- 01:15UT on the 17th saw nothing unusual and indeed could not see Aristarchus. The Cameron 1978 catalog ID=1151 and weight= 1. the ALPO/BAA weight=1.
In 1832 Dec 25 at 18:00UT Piazzi-Smyth (Edinburgh, Scotland) observed a bright spot near Aristarcus. The Cameron 1978 catalog weight=4 and the ID=112. The ALPO/BAA weight=3.
Aristarchus 1969 Jul 17 UT 2144-2149 Nelson Travnik (Matias Barbosa, MG, Brazil). "Uncommon brightness of soft blue tone; gradual decrease till 21:49 when it became normal. Maximum at 21:46. (Apollo 11 watch)". The Cameron 1978 catalog ID=1155. ALPO/BAA weight=2.
On 1822 Jun 22 at UT 21:20 Ruppell (Germany?) observed a "lunar volcano" in Aristarchus. The Cameron 1978 catalog ID=96 and the weight= 1. The ALPO/BAA weight=1.
On 1912 May 20 at UT 21:00 Franks (6" refractor) observed the Leibnitz Mountains? (South Pole area) to have a small red glowing area on the dark part of the Moon. The Cameron 1978 catalog ID=338 and weight=1. The ALPO/BAA weight=2.
In 1933 Mar 30 at UT 20:00 Douillet (France?) observed in the Aristarchus region: "White. (in the dark part)". The Cameron 1978 catalog ID=404 and the weight=2. The ALPO/BAA weight=1.
On 1969 Jul 18 at UT 23:00-00:15 Ronaldo R. de F. Mourao (Rio de Janeiro, Brazil, 8" refractor, 10" refractor(?), 19.5" refractor) saw a TLP in Aristarchus that they had seen earlier in the evening involving: Luminosity in Aris. strong & prolonged northward with impression of 2 lum. pts. (Apollo 11 watch). The Cameron 1978 catalog ID 1159 and weight=4. The ALPO/BAA weight=1.
On 1822 Jun 23 at UT 21:20 Ruppell (Germany?) observed a "lunar volcano" in Aristarchus. The Cameron 1978 catalog ID=96 and the weight= 1. The ALPO/BAA weight=1.
On 1994 Jan 16 at UT19:30-21:10 D. Strachen (England, UK, 4" refractor, x21 and x143) whist looking at an occultation of ZC3453, saw a bright spot in Earthsine, just north of Aristarchus (47W, 25N) at position angle 30deg-40deg, only a little way in from the limb. It appeared like a star through haze and a few seconds of arc in diameter. It was Visible for more than 1 hour until 20:50UT although had faded somewhat by that time. However J. & M. Cook (Frimley, UK, 12" reflector, x143 and x244) saw nothing in Earthshine from UT 20:02-21:10. The Cameron 2006 catalog ID=472 and weight=1. The ALPO/BAA weight=1.
On 1991 Jun 16/17 at UT 20:30-00:30 T. Castro (Sao Paulo, Brazil, 24" reflector, x500) observed "Large white spot with a comet-like tail extending eastwards (celestial) on of the shore of Mare Crisium at 52.5E, 21.5N." This was confirmed by several other observers and apparently video recorded. The effect was seen on several nights but had faded completely by 20th June. J. Westfall (San Francisco, CA, USA) also videod the spot but on Jun 21. The Cameron 2006 catalog ID=429 and the weight=5. The ALPO/BAA weight=1.
Alphonsus area? 1949 Jun 01 UT 22:06 H.P. Wilkins (Kent, UK, 6" reflector x200) observed a bright white 1 sec stationary (mag 3?) flash in Earthhsine, close to the central meridian, and due E of Theophilus (potentially in the general area of Alphonsus?). The flash was approximately 6 km in diameter. ALPO/BAA weight=1.
On 1975 Dec 08 at UT18:00-20:40 P.W. Foley (Wilmington, Kent, UK, 12" reflector, x60-x624, seeing II, slight mist) found Aristarchus to be less well visible than features such as: Grimaldi, Reiner, Darwin/Byrgius, Kepler, Plato and Sinus Iridum. Earthshine was exceptionally good tonight and was orange/red in colour. Photographs were taken and these confirmed the apparent dullness of Aristarchus. ALPO/BAA weight=2.
On 1990 Mar 31 at UT 21:30 L. Jackson (England, UK?) observed a red glow in Earthshine in Gassendi as shown in a sketch. Apparently Gassendi can often show up red colours (according to Cameron) but rarely is this seen in Earthshine. Foley saw the sketch and suspects that the location was Gassendi. The Cameron 1978 catalog ID=397 and weight=2. The ALPO/BAA weight=3.
On 1970 Apr 11 at UT 22:04-23:00 Claudio Pamplona and Jackson Barbosa(Fortaleza, Brazil, 2" refractor, x160, seeing=fair) observed an obscuration over Peirce, in particular they could not see the crater wall and the crater itself was like a black pit. (Apollo 13 watch). The Cameron 1978 catalog ID=1238 and weight=1. The ALPO/BAA weight=1.
On 1991 Jun 17 at UT 20:30 T. Castro (Sao Paulo, Brazil, 24" reflector, x500) observed "Large white spot with tail eastward shore of M. Crisium." The effect was seen on several nights but had faded completely by 20th June. Tonight it varied in brightness from "7.5-9.5 albedo" The Cameron 2006 catalog ID=430 and the weight=5. The ALPO/BAA weight=1.
near Proclus 1970 Apr 12 UT 00:15, 00:20 Observed by Loocks (Valparalso, Chile, 12" reflector, x88) "Brilliant in area NW of crater. No change in brightness Contrast to opacity of illuminated fraction of this day Later saw a flash on the moon. (Apollo 13 watch)." NASA catalog weight=2. NASA catalog ID #1239. ALPO/BAA weight=2.
Jansen-Maskelyne 1969 Jul 20 UT 00:53-01:00 Observed by Jean and Collak (Montreal, Canada, 4" refractor and 6" reflector) "Jean and Collack noted obscur. between Jansen and Maskel. from term. No features discernible here whereas Proc. & Theoph. were already vis." NASA catalog weight=2 (low). NASA catalog ID #1169.
Near Langrenus 1969 Jul 20 UT 00:53-01:00 Observed by McNamara (Canada, 6" reflector) "McNamara saw a flash nr. Lang. (meteor?) Apollo 11 watch)" NASA catalog weight=0 (very unreliable). NASA catalog ID #1169.
Theophilus 1970 Apr 12 UTC 00:25 Observed by Collier (Montreal, Canada, 6" relector?, x180) "Sharp E. inside wall flashes; c.p. lighter than floor. Pink on peak & illum. wall. Drawing. (Apollo 13 watch)." NASA catalog weight=2 (low). NASA catalog ID #1240.
On 1969 May 22 at UT23:20 an unknown observer reported some brightenings with pulsations in Aristarchus crater, Cameron suspects atmospheric aberrations. This was during the Apollo 10 watch. The Cameron 1978 catalog ID=1136 and weight=1. The ALPO/BAA weight=1.
On 1970 Apr 12 at UT 22:10-22:40 Censorinus was observed by Jean Nicolini (Sao Paulo, Brazil, 12" reflector, x680). The crater had a visible reddish hue--gap in bright area on western slope. Colourless to pink to reddish. Environs also involved. Photographs were taken. (Apollo 13 watch). Cameron 1978 catalog TLP ID 1241 and weight=3. ALPO/BAA weight=3.
On 1969 Jul 20 at 22:50-23:15UT Jean Nicolini (Sao Paulo, Brazil, 12" reflector x430, S=II.5-III.5) saw a weak reddish area on the north west(east?) wall of Eudoxus crater. An English Moon Blink device showed it dark in blue and opaque in red. Reddening remained unchanged while comparing it to adjacent region and Aristotles. Colour index was toward dirty orange. Colour most apparent in the good moments of seeing and disappeared in the poorer moments of seeing, Cameron says that this is opposite to what was expected if the effect was atmospheric in origin and no colour was seen in Aristotles. Apollo 11 watch. Cameron 1978 catalog ID=1177 and weight=3. The ALPO/BAA weight=3.
Proclus 2005 Jun 13 UT 16:00-17:10 Observed by Julio Lobo (Campinas, Brazil, 500mm telescope + finder scope) "Glow and reddishness (pink) seen on circular rim. Also crater was intensely bright all over. After 16:30 the brightness fades, returning to normal. The ALPO/BAA weight=3.
Cyrillus 1970 Apr 12 UT 23:46-23:52 Observed by Loocks (Valpareiso, Chile, 12" reflector x88, LION network) "Small crater in Western Cyrillus was much brighter than anything in the area". NASA catalog weight=1 (very low). NASA catalog ID #1242.
Mare Numbium 1970 Apr 12 UT 23:46-23:52 Observed by Loocks (Valpareiso, Chile, 12" reflector x88, LION network) "Small crater in Western Cyrillus was much brighter than anything in the area. Earlier he got a blink at 35deg W 15 deg S 10th mag. Drawing (Apollo 13 watch)" NASA catalog weight=2 (poor). NASA catalog ID #1242.
On 1970 Apr 12 at UT 23:56 Loocks (Valparsiso, Chile, 12" reflector, x88) observed a flash of magnitude 10 in Aristarchus - "not as brilliant as usual (obscur. ?). Did not obs. permanent luminosity as in other apportunities. (Apollo 13 watch)" The Cameron 1978 catalog ID= 1243 and weight=3. The ALPO/BAA weight=2.
On 1991 Jun 18 at UT 21:30? T. Castro (Sao Paulo, Brazil, 24" reflector, x500) observed "Large white spot with tail eastward shore of M. Crisium." The effect was seen on several nights but had faded completely by 20th June." The Cameron 2006 catalog ID=430 and the weight=5. The ALPO/BAA weight=1.
Biela, Maskelyne 1969 May 23 UTC 02:32-03:00 Observed by Skinner, Perez, Barry, Bernie, Madison (Edinburgh, TX, USA) described in NASA catalog as: "Bright W.rim & 2 spots on N. &SE rim had blink (red -- Trident MB device) & event was in progress at start of obs. Saw nothing without image tube. Could not focus camera so no photos. Blink had ceased when image tube was replaced. Temporary bright reddish spot nr. Mask. photographed, (Apollo 10 watch). 17" reflector used. NASA catalog weight=5. ALPO/BAA weight=5.
Maskelyne 1969 May 23 UT 02:32-03:00 Observed by Skinner, Perez, Barry, Bernie, Madison (Edinburgh, TX, USA) descibed in NASA catalog as: "Temporary bright reddish spot nr. Mask. photographed, (Apollo 10 watch). 17" reflector used. NASA catalog weight=5. ALPO/BAA weight=4.
On 1972 May 19 UT 18:24 observed by Engels (52deg 40'N 9deg 5E, using 10x50 binouculars, transparency 2 out of 5, seeing unknown), a orange to yellow bright flash was seen, lasting 0.1 sec at the southern rim of Mare Crisium. Published in Hilbrecht and Kuveler, Moon and Planets, 30 (1984) p53-61. ALPO/BAA weight=2.
On 1969 May 23 at UT03:04-03:10 Jean (Montreal, Canada, 4" refractor, seeing=good, transparency=3.) observed a white patch on the southern horn of the Moon. It enlarged and became coloured pink and blue without filters and reddish in a yellow filter(?). At 03:10UT the area became as normal as the rest of the environment. Other observers participating were: Rousseau (Canada, 8" reflector), Collier (Canada, 5.25" refractor) and Dumas, St. Cyr (Canada, 5.25" refractor). Cameron suspects a real event mixed in with Chromatic Aberation? Apollo 10 watch. The cameron 1978 catalog ID=1138 and weight=3. The ALPO/BAA weight=2.
Piton 1970 Apr 13 UT 22:06-01:30 Observed by Cutts (Waverton, UK) "Peak was bright (Apollo 13 watch. Shining in dark?)" NASA catalog weight=1. NASA catalog ID #1247. Similar illumination shown on Hatfield Plate 2E(left). ALPO/BAA weight=1.
On 1982 Aug 26 at UT 21:00 Arsyukhin (Moscow, Russia, 3" reflector) found that Poisson appeared hazy. The Cameron 2006 catalog ID=181 and weight=3. The ALPO/BAA weight=1.
Proclus 1969 Jul 22 UT 00:30? 01:15-01:25 observed by Classen (Pulsnitz, E.Germany, 8" reflector), Leroy (Pittsburgh, 21.5" reflector x310) and Cutter (Pennyslyvania) "Brightening of crater (Classen). Alternatate brighening of S.part of crater at 15s intervals (too long interval for atm.) while N. half remained constant. Leroy confirmed Cutter. (Both confirmed Classen Apollo 11 watch)." NASA catalog weight= 5. NASA catalog weight=1151. ALPO/BAA weight=3.
On 1969 May 24 at UT 02:40 Ricker (Marquette, MI, USA, 10" reflector) and Kelsey (Riverside, CA, USA, 8"? reflector). Ricker saw pulsations in Aristarchus, partly confirmed by Kelsey. Cameron comments that it is suprising that Aristarchus could be seen at first quarter - Apollo 10 watch. The Cameron 1978 catalog ID=1142 and weight=5. The ALPO/BAA weight=4.
Ptolemeus 1970 Apr 14 UT 00:45-01:30 Observed by Nelson Travnik and Sergio Vianna (Matias Barbosa, Minas Gerais, Brazil, 4" refractor, x250, x400, - observing onditions very good, Kodak Wratten 15 an d 23 filters used) "A kind of glimmering mist lifted and wafted inside the shady hollow of the crat er (Apollo 13 watch)" NASA catalog weight=3 NASA catalog ID #1248. ALPO/BAA weight=1.
On 1994 Apr 18 at UT14:40 C.D. Hua (China) found that the wall of Picard had changed to dark. The ALPO/BAA weight=1.
Fracastorius 1975 Apr 19 UT 19:47, 20:40, 20:45 Observed by Robinson (Teignmouth, UK, 26cm reflector) "Fracastorius had a blink - it was bright in red and darker in blue at these three times, and probably in between. This was possibly natural surface colour being detected?". ALPO/BAA weight=1.
Mare Crisium 1975 Apr 19 UT 19:47-20:37 Observed by Robinson (Teignmouth, UK, 26cm reflector) "Mare Crisium N. end of floor - blink (red and blue filters) in patches, bright in red. Blink stops at 20:37". ALPO/BAA weight=1.
Alphonsus 1958 Nov 19 UT 21:00-21:20 Observed by Hole (Brighton, England, 24" reflector x500) and Wilkins, Wall and Brewin (Located in Kent, and other locations in England, and 15", 12" and ?" reflector telescopes) "Reddish patch on c.p. (S. of it) about 3 km in diameter. (indep. confrim)." NASA catalog weight=5 (very high). NASA catalog ID 706.
2 deg S of Maskelyne (29E, 1N) 1969 May 25 UT 01:15-01:56 Observed by Jean, Barry, Bernie, (2) Madison (Montreal, Canada, USA, 4" refractor) "Very vis. pink patch red as seen thru a yellow filter. Photo of bright red spot nr. Mask. (confirm. -- Apollo 10 watch)" NASA catalog weight=5 and 5. NASA catalog ID #1145. ALPO/BAA weoight=3.
Hercules 1970 Apr 14 UT 23:10-23:45 Observed by Jean Nicolini (Sao Paulo, Brazil, 12" reflector, x680) "Vis. reddish-brown hue to shaded area. In crater -- different from Atlas. Phenon. stayed after moving telescope. Photos obtained. Not chrom. Abber. (Apollo 13 watch)" NASA catalog weight=5. NASA catalog ID #1251. ALPO/BAA weight=4.
On 1975 Apr 19 UT 21:09 P. Foley (Kent, UK), detected blue in Plato on east. Fiton at UT20:45 found blue along the south wall at the east (IAU?) end, which was very bright white. Blueness extended towards the large landslip at the east of the formation. Immediately north of the landslip, where the bright wall curves first westwards, then again northwards, red could be faintly detected, folloowed by a very faint blue. All other parts of the formation were normal. Examination with a Moon blink device revealed no colour blink. J-H Robinson also found blue, with red on the west wall (exterior?). By 21:30UT Fitton found Plato to be normal and so was Proclus, though he did find Epigenes (bright cresecent of east wall only) slightly blue to the N.W and red to the S.E. Mare Crisium was normal. Prominent spurious colour seen on Venus, but it was low in the sky, with blue to the north and red to the south. However J.H. Reading, managed to see the north east floor blurred and slightly blue from 22:45-23:00UT. These reports are BAA observation. The ALPO/BAA weight=2.
Alpetragius 1958 Nov 19 UT 22:00-22:05 Observed by Stein (Newark, New Jersey, USA, 4" refractor) "Shadow anomaly. Portion of shadow vanished, replaced by lighter shade. At 22:05 gradually darkened & was normal in 20 sec." NASA catalog weight=3. NASA catalog ID #704. ALPO/BAA weight=2.
Plato 1964 Nov 14 UT 01:00? Observed by Bartlett (Baltimore, MD, USA, 4" refractor?) "Peak on E. wall brilliant white, strong blue band at inner base; on S. wall was a small, bright red spot." NASA catalog weight=4. NASA catalog ID #864. ALPO/BAA weight=3.
On 1968 May 07 at UT 03:00-03:40 Kelsey (Riverside, CA, USA, 8" reflector) observed Messier and Messier A and noted the following: "The ray-tail halo (in N. ray) showed a possible enhancement in blue filter at 1st obs. per. but not seen at 0330. Later enhancement was indicated in red filter but not apparent at 0600h. The red enhancement is very unsual; but has been suspected on a few previous occasions. Not seen vis. (confirm. of Jean?)" The Cameron 1978 catalog ID= and weight=5. The ALPO/BAA weight=3.
Near and on Plato 1970 Apr 15 UT 21:45-22:04 Observed by da Silva (Sao Paulo, Brazil, 10" & 20" refractors) "Crater chain W. of Plato -- 3rd crater W. (Plato Y) was brighter than surroundings. Lozenge on W. wall (landslip?) was darker than inner wall. Bright part of wall was yellowish-white. da Silva reports this as neg. (normal aspects) obs (Apollo 13 watch probably normal as Y is a bright halo crater)." NASA catalog weight=0. NASA catalog ID #1255. ALPO/BAA weight=1.
Posidonius 1970 Apr 15 UT 21:05-22:10 Observed by Wanderley Nazareth (Sao Paulo, Brazil, reflector) "Intermittant pulsation. Drawing 20S interval for pulsations. (too long for atmospheric aberration? Apollo 13 watch)." NASA catalog weight=3. NASA catalog ID #1254. ALPO/BAA weight=3.
Tycho 1970- Apr 15 UTC 22:00-23:00 Observer: Nelson Travnik (Matias Barbosa, Minas Gerais, Brazil, 4" refractor, x250 & x400, seeing excellent, Wratten 15 and 23 filters used) "Slightly pulsating white glow on W. (IAU?) wall's external slope (Apollo 13 watch). NASA catalog ID #1256, NASA weight=2. ALPO/BAA weight=2.
On 1982 Oct 26 at UT 20:41-22:22 P. Madej (Huddersfield, UK, seeing=II and transparency=good) found that a blurring effect on the crater Yerkes had spread to Picard (~3.5 deg brightness). The effect was not detected in yellow light from the Wratten 15 filter, but a brightness change was picked up in red Wratten 25 light. J.D. Cook found dark surrounding Picard bright illumination. The Cameron 2006 catalog ID=188 and weight=5. The ALPO/BAA weight=3.
Yerkes-Picard 1982 Oct 26 UT 20:41-22:22 and 21:31 Observed by Madej (Yorkshire, England, Seeing II, Transparency Good) and Cook (Frimley, England, Seeing=II, Transparency Good) "(Madej) could not focus Yerkes as well as could Peirce. By 2041 effect extended to Picard (~3.5 deg). In W15 filter not apparent, but albedo change was very marked in W25 red filter. (M. Cook) at 2222 noted faint orange around Yerkes E. Spurious color seen in other areas. Color around Yerkes intermittent. In blue filter it was still orange. (J. Cook) at 2131 noted S rim of moon was orange & seeing was such that it was fizzing. Around Yerkes only orange tint - tending intermittent" Cameron (2006) catalog ID #188 & weight=5 (very good). ALPO/BAA weight=1.
Alpetragius 1889 Aug 04 UT 03:00-03:45 observed by E.E. Barnard (Lick Observatory, CA, USA, 36" refractor, x150, x700) "Shadow of CP diffused & pale. Entire inside of crater seemed filled with haze or smoke. Shad. of E. wall was black & sharp. CP & floor seen thru haze. No other craters showed this appear. (date & time rep't Sep 3, 1830L T)" NASA catalog weight=4 (high). NASA catalog ID #264.
Manilius 1970 May 04 UTC 19:20 Observer: Mansfield (Cape Town, S.Africa), distinct pink colour noticed. NASA catalog ID No. #1294. Weight assigned to this observation by the NASA catalog was 3 (average).
Proclus 1972 Mar 24 UTC 16:29-19:22 observed by Hopp (52.5N, 13.25E, 75mm refractor) "Enormous brightening, vanished until 1922. Pattern changed from oval to circular several times."Hilbrecht and Kuveler, Earth, Moon & Planets, 30 (1984), p53-61
Plato 1966 Jun 27 UT 21:40-21:55 Observed by Robinson (Teignmouth, England, 10.5" reflector) and Sartory (England, 8.5" reflector + Moon blink) "Color (red?) on SE wall detected by Eng. moon blink sys. (confirm)." NASA catalog weight=5 (very high). NASA catalog ID 949.
On 1990 Apr 05 at UT 00:43-01:46 D. Darling (Sun Praire, WI, USA, 3" refractor, x90) observed that Bullialdus (the crater was in shadow) was pink in colour on the edge of its wall. The effect lasted from 01:15- 01:44UT and he could discern the terrace on the western wall. Comparisons were made to Tycho and Copernicus - all of which were normal. The Cameron 2006 catalog ID=399 and the weight=3. The ALPO/BAA weight=3.
On 1968 May 07 at UT 03:00-03:40 Kelsey (Riverside, CA, USA, 8" reflector) observed Messier and Messier A and noted the following: "The ray-tail halo (in N. ray) showed a possible enhancement in blue filter at 1st obs. per. but not seen at 0330. Later enhancement was indicated in red filter but not apparent at 0600h. The red enhancement is very unsual; but has been suspected on a few previous occasions. Not seen vis. (confirm. of Jean?)" The Cameron 1978 catalog ID= and weight=5. The ALPO/BAA weight=1.
Tycho 1940 Dec 09 UTC 04:00? Observer Barcroft (Madera, CA, USA). The NASA catalog states: "Some luminosity on W. rim of outer slope". 6" reflector used. NASA TLP catalog assigns a weight of 3 (average). NASA catalog TLP ID No. #481.
Alphonsus 1969 Jul 24 UT 01:00-02:35 Observed by Fournier (Lowell, 6" reflector x158) and Dillon (Massachuchusets, USA) "Fournier saw obscur. & red in crater. 1 of the dark halos (NE) was very difficult to detect -- seemed to be a whitish mist. Detail best seen in blue & green filters. Dillon found halo much lighter than usual, with sharp boundary washed out. Halo was darker thru blue filter, indicating red when it's normally bluisg-green. Next nite it was normal. Worsening weather stopped obs. (confirmation. Apollo 11 watch)." NASA catalog weight=5 (very good). NASA catalog ID #1185.
On 1992 May 11 at UT 20:20-21:00 R. Amendsensvej (Esbjerj, Denmark, 10" reflector, x333) noted that Copernicus had "almost no disturbance. Flash was seen between 2236:30 & 2236:40. Thus 10S". The Cameron 1978 catalog ID=444 and weight=1. The ALPO/BAA weight=2.
Scarcely a trace of nebulae tonight. As long as to June 10 at 2000UT? A little blackness remained. (P. Moore thinks it was a LTP, WSC it was a permanent feature?) Drawing. Seen by Nevelius Emmett, J. Boroughbridge, England. The 2006 Extension catalog by Cameron assigns an ID No. of 4 and a weight of 1. The ALPO/BAA weight=1.
On 1983 Jul 20 at UT 18:50-22:40 P.W. Foley (Kent, UK, 12"reflector, seeing II-III) noted that the south wall of Plato at the 11 o'clock position, at the location of a cleft, was fuzzy on either side of the cleft. There was also a deep red colour along the cleft and the outside wall. The colour had gone by 22:40 though. All other parts of the rim of Plato were clear and distinct. M. Cook (Frimley, UK, seeing III) sketched some obscurations at 22:03UT. At 22:08UT the red colour reduced to a red line and vanished by 22:37. The south wall obscuration varied in size and there was a possible obscuration at the 7 o'clock position. J. Cook (Frimley, UK, seeing II-III) confirmed Foley's and M.Cook's observations. Detail inside the crater was sharp, but colour oppoiste to what is usual. Price (Camberley, UK, seeing IV-V) a few km away had atmospheric ripples affecting his observations. At 21:36UT G. North described the south wall as odd in appearance and the terrain south of this was lacking in detail - this was odd because elsewhere Plato was nice and sharp. At 21:45UT though the north section of the crater was a hazy red. The cameron 206 catalog ID=224 and the weight=5. The ALPO/BAA weight=3.
Campanus 2014 Jan 11 UT 22:00-22:30 S.Bush (UK, 6" SCT, x180, seeing average) made a sketch of the Campanus and Mercator craters. He found that the central peak of Campanus difficult to resolve and the floors of both craters were devoid of detail. Mercator was the lighter shade of the two floors. Earlier at 19:47 UT M.Brown (Huntingdon, UK) imaged this region and using Registax resolved details on the floors of both craters, though Mercator clearly was slightly lighter in floor shade and had less detail on its floor than Campanus. The most likely explanation was that it was just seeing effects blocking the visibility of detail - this of course is less of a problem for a Registax usid on the CCD image. However just to be sure this observation is being given an ALPO/BAA TLP weight of 1, to encourage visual observers to attempt this observation under similar illumination and seeing.
On 1983 Aug 19 at UT 07:15-07:30 D. Louderback (South Bend, WA, USA, 3" refractor, x150) found that the direct sunlit side of Mons Piton mountain (E) was brighter than (his designated) points C and D and this happened at the same time as some "blurring"at 07:15UT. The darker side, between C, A and B were not so dark through a red filter as through a blue filter (this was the opposite of what had been seen before at a high sun angle). Louderback suspects that there had been a colour change since he last observed. He also noted that in red light the whole lunar disk appeared fuzzy and out of focus. Louderback noted a 1 sec brightness on the east slope and the whole mountain sharp in blue light. The Moon's altitude was low though. Brightness measurements were 4 in blue light and >= 4.6 in red light and "so illdefined almost blended into plain". Cameon commnets that a telescope colour/focussing issue may have been at work here! The Cameron 2006 catalog ID=226 and weight=4. The ALPO/BAA weight=1.
Sinus Iridum 2004 May 29 UT 20:44 Observed by Clementelli (Rome, Italy, 102mm diameter Vixen refractor 80-160x, sky conditions: clear, no wind) "A blue/violet streak, lasting ~10 minutes was seen on the floor of Sinus Iridum between crater Bianchini and Promontorium Heraclides. The suspect TLP mybe an effect of instrumental achromatic aberration, but there is the small possibility that the effect was real." A UAI observational report. The ALPO/BAA weight=1.
On 1989 May 17 at UT Fabian (Chicago, IL, USA, 4" reflector, x35-x50 and 8" reflector) noted a pale blue colouration in the ridges situated west of Aristarchus and north of Herodotus craters, in the vicinity of the terminator (and on the night side). Aristarchus itself did not have any colour. Īt was only area with such color though there were numerous others of similar elevation and relation to term. The colour was seen in a 4" Cassegrain telescope, but when an 8" reflector was used at 02:30UT, even with the same eyepieces. Cameron comments that maybe the larger telescope spread the colour out? The sketch that Fabian suplied, suggested to Cameron that the TLP was located at Herodotus, and the ridge was part of Schroter's valley - Cobra Head. The Cameron 2006 catalog ID=364 and the weight=2. The ALPO/BAA weight=2.
On 1978 Jan 20 at UT19:10 P.W. Foley (Kent, UK, 12" reflector) observed a red spot at the southern edge of Gassendi C. P. Moore (Slesey, UK, 15" reflector, S=II-III) reported nothing unusual 17:00-17:50. Turner and others reported negative at 22:01. Pedler (UK, 12.5" reflector, S=III-IV) though detected a yellow-orange tint on the east floor of Gassendi A but the effect faded during poor seeing moments. Cameron 2005 catalog ID=24 and weight=5. ALPO/BAA weight=3.
Aristarchus 1989 Jul 15 UT 02:00-04:20 Observed by Manske, Weier, Curtis, Keyes, Yanna, Norman, Knutson, Sullivan, Eichman and Radi (Carl Fosmark Jr. Memorial Observatory, Madison, WI, USA, SCT C11) "Manske initially observed a reddish tinge on the SE rim of Aristarchus. The colour was present in different eyepieces. Two other pinkish tinge areas were seen on the SE and NE rims. 4 of the observers did not see colour. Independent confirmation was made by Don Spain (KY) and Smith in LA. Full details can be found on the following web site: http://www.ltpresearch.org/ltpreports/LTP19890715.htm " An ALPO report.
On 1969 May 28 at UT 02:18 Delano (Taunton? MA, USA, 12.5" reflector, x300, seeing=fair and transparency=good) through the red filter at 02:18UT saw a bright area on the west wall of Aristarchus crater become 2x brighter than normal then faded back to normal in < 1 min duration. The spot was 8km centred on sigma=0.682 and eta=0.397. No events seen at Kepler (Apollo 10 watch). The Cameron 1978 catalog ID=1149 and weight=4. ALPO/BAA weight=3.
On 1975 Feb 22 at 19:00-22:50 Fitton (Lancashire, UK, 8" reflector, seeing=II-III-I) saw Aristarchus (at 19:00UT) blue, with no obscuration visible in white, red or blue filters. This was not a telescopic effect. "Obs. 4.5h. Says it & next 5 nites obs. were due to high pressure system W. of obs.". Foley found nothing unsual in Aristarchus in his observing session, which overlapped Fittons. The 1978 catalog ID=1396 and weight=3. The ALPO/BAA weight=1.
On 1975 Feb 22 at 20:04-22:50 P.W. Foley (Kent, UK, 12" reflector, seeing=good) observed Prinz to have a diffuse white obsecuration. There were pulsations of 30-50sec intervals. Effect ceased at 22:50UT and indeed was fading earlier from 22:35UT. Photgraphs were taken but showed nothing unusual and no colour. Aristarchus was also negative. The Cameron 1978 catalog ID=1396 and weight=3. The ALPO/BAA weight=2.
On 1969 May 28 at UT 02:18 Delano (Taunton? MA, USA, 12.5" reflector, x300) suspected a short duration flare up on the W wall of Aristarchus at 0.682 and 0.397, but it may have been due to poor seeing. No events seen at Kepler (Apollo 10 watch). The Cameron 1978 catalog ID=1149 and weight=4. ALPO/BAA weight=1.
On 1980 Dec 18 at UT20:46-23:58 A.C. Cook (Frimley, UK, 12" reflector, 40-250x, S=IV and transparency good) found the north west wall to be brighter in red than in blue light, however the effect faded during 21:29-21:41UT and was gone by 22:40UT. There was however spurious colour on the north west wall. M. Cook (Frimley, UK) found the central peak to be both bright and diffuse, and brighter in red than in blue light during 20:52-20:57UT, however at "22:53-23:58 c.p. very bright & previous area decreased in size. No detail in white or red, just visible in blue. Sketch (J. Cook) Orange out on NW rim & on NW side of c.p. Similar effects seen on other craters. (madej) c.p. & W. rim wall very sharp. c.p. disappears in yellow but still seen in purple. (pedler) c.p. > red than blue but no obstruction. W wall interior dusky, darker in blue." A.C. Cook's photo depicts the central peak as very bright. Cameron 2006 catalog TLP ID=120 and weight=5. ALPO/BAA weight=2.
Aristarchus-Herodotus 1970 Apr 18 UT 20:14 Observed by MacKenzie (UK,2.5" refractor x45, seeing Antoniadi I) "Fairly strong blink in a spot 1/2 way between the 2 craters. Drawing (Apollo 13 watch). NASA catalog weight=2. NASA catalog ID #1257. ALPO/BAA weight=2.
On 1992 Feb 16 at UT 01:05-01:35 P. Moore (Selsey, UK, 12.5" reflector, seeing=III) found the north rim area to be both very bright and misty - though he did not think it to be a TLP but wanted it to be recorded, just in case. The Cameron 2006 catalog ID=440 and the weight=1. The ALPO/BAA weight=2.
Triesnecker 1966 Jul 10 UTC 02:00-02:15 Observed by Allen (Cambridge, England) and other observations by Corralitos Observatory (Organ Pass, NM, USA). Described in NASA catalog as: "Faint illum. of a ridge in shadow; faded quickly (in BAA judged dubious). Not confirmed by Corralitos MB." 12?" refractor (x280) used at Cambridge and at Corralitos 24" reflector. NASA catalog weight=1 (very low). NASA catalog TLP ID No. #956.