In 1832 Feb 13 at UT 05:00 (maybe 08:00) Gruithuisen (Munich, Germany) observed in Messier two straight lines and between them a dark band covered with luminous pts. (According to Cameron opposite of view revealed by Orbiter missions. Also Year wrong? crater in dark if 1837 it would be FM & fit desc.) The Cameron 1978 catalog ID=115 and weight= 4. The ALPO/BAA weight=2.
On 1938 Jul 24 at UT 08:00 Firsoff (Glastonbury, UK, 6" reflector with filters) observed Grimaldi to be a gray-green colour. The Cameron 1978 catalog ID=442 and the weight=4.
Rocca 1938 Jul 28 UT 08:00 Observed by Haas (NM?, USA, 12?" reflector) "Colored (dark ?) area was I=4.3, comp. with I=1.0 on 4/26/38 (see # 434) & I=1.3 on 4/27/38 (see #435)" NASA catalog weight=4 (high). NASA catalog ID #441.
In 1950 Jan 21 at UT 09:00 T.Saheki (Osaka, Japan) and S. Murayama observed several bright patches on the western limb region in Earthshine. These were not the same as patches observed by them on Jan 20. A tiny bright spot on the SW limb was about mag 8. The ALPO/BAA weight=1.
Cape Agarum 1967 Jan 14 UT 17:17-17:35 Observed by Middleton, Colchester, England, 4" refractor, x240, S=G) "Cape was hazy or obscured whereas Piccard, Pierce, & Cape Olivium were quite clear. Has seen this area obscured many times" NASA catalog weight=3 (average). NASA catalog ID #1008.
On 1969 Jan 22 at UT 00:10-00:30 Kilburn (England, UK, 6" reflector x192, English Moon Blink device) observed a colour blink on the outer east wall of Gassendi. Cameron says: "in dark!". The Cameron 1978 catalog ID=1117 and weight=3. The ALPO/BAA weight=2.
On 1980 Apr 18 at UT20:55 G. Amery (Reading, UK, 10" reflector, 50- 200x, seeing III) individual features not seen near Cassini. Cameron 2006 catalog ID=86 and weight=5. ALPO/BAA weight=1.
Taruntius on 1980 Apr 18 UT 22:33 P.Madej (Huddersfield, UK) noticed that this crater changed from dark black to almost a light grey over a period of about 30 seconds. Observation started at 22:27 and ended at 22:37. When the observer saw this effect in that 10min period is not given, so the UT above is the nid UT of the observing period. The ALPO/BAA weight=1.
On 1881 Sep 27 at UT 19:00 Marokwic (South Africa) observed a comet- like object pulling across the Mon. The Cameron 1978 catalog ID=225 and the weight=2. The ALPO/BAA weight=1.
On 1980 Apr 19 at UT 20:37-20:49) P. Madej (Huddersfield, UK, 77mm refractor, x83 and x111) at 20:37 UT saw a slight glow at x83, quite small in size. At 20:46UT no glow was seen at x83. At 20:49 a slight glow seen again, but unclear and illdefined - appeared larger in area at x111. Observatons ceased at 21:56 dues to clid. ALPO/BAA weight=1.
On 1980 Apr 19 at UT20:30-22:59. The following is quoted from the Cameron 2006 catalog.... "(Buczynski) alerted by colleague (Greenwood) who used filters W15 (IR), W25 (red), W44A (blue), & W58 (UV) and had located a possible blink in it. (Bucz) used W15, W44A & W25. C.P was very bright in W25 (red), dull but vis. In W44A (blue) & floor was noticibly darker in W44A than in W25. Bright cp vis. In W15 & floor was of a light shade. Other craters checked for color, none found. In 44A floor lost some definition (gas?). Sketches from Bucz. & Greenwood. (Pedler) at 2140, floor area around cp was seen in white & red as normal but blink was vis in white, darker in blue. Checks of other features were negative. (Amery) small dark center & small dark area - not shadow - under S wall. N wall obscured by dark area extending N onto surrounding mare. (normal?) which was difficult to focus (gas?). At 2155 N wall now sharper & dark area less intense. Craterlet Cameron in N wall clearly seen which was invisible 1/2 h earlier. (Saxton) whole crater flashed and blinked at 2155. Could see detail in brighter W 1/2 of crater - not seen earlier. At 2205 seeing poor, at 2215 it was normal. (Blair) at 2155 used red & blue filters & in blue it was darker than in red. W. wall not well defined. (J. Cook) saw spurious color on N & S rims. Saw a pink tinge on SE rim. (A. Cook) saw spur. Color on most craters as seeing deteriorated. Got a blink on SE region > red than blue". The Cameron 2006 catalog ID=87 and the weight=5. The ALPO/BAA weight=3.
Proclus 1971 Jan 01 UTC 19:00-20:25 Observed by Marchart (Aldershot, England, 8" refractor x500). "Color patch on N wall, red & green on inside, even tho eyepieces were rotated & changed. (chrom aberr. ?) (experienced observer)." NASA catalog weight=1 (very low). NASA catalog ID #1280.
On 1980 Apr 20 at UT21:12-22:45 J-H Robinson (Teignmouth, UK, 10.5" reflector, x180) found, using a Moon Blink device, evidence of colour on the flor patches of Fracastorius crater, brighter in blue than in red. Also the floor to center varied in brightness in blue and in red. Peters observed in white light and found the south east-south wall had a slight orange cast and when a Moon blink was used it was less bright in blue than in red light. M. Cook found spurious colour on the south rim and also on Mons Pico. There was a colour blink reaction on the southeast floor of Fracastorius - this was both faint and blurred and not seen in white light. A.C Cook detected the permanent blink in the south east floor of the crater at 21:47 and a fainter one in the north west (marginally brighter in red than in blue). J.D. Cook found no colour with the Moon blink device. 21:22-22:10 P.W. Foley got a strong colour reaction with the Moon Blink device - brighter in red than in blue and detected a pink colour visually on the south east wall 22:10- 22:45 (this did not give a blink effect though). Cameron 2006 catalog ID=88 and weight=4. ALPO/BAA weight=2.
On 1980 Apr 20 at UT20:27 M.Price (Camberley, UK) saw a flash in the Grimaldi-Aristarchus area. Cameron 2006 catalog TLP ID=88 and weight=4. ALPO/BAA weight=2.
On 1980 Apr 20 at UT21:38-21:50, Blair of Renfrewshire, Scotland (used an 8" reflector and seeing=III) saw three patches in Petavius and they could still be seen 7 minutes later. At 21:50UT he used a filter and found the "northern one was brighter in blue, the southern one was brighter in red and the central one was the same shad ein both filters." Cameron comments that the central patch was a permananent one. She then goes onto say that the crater is described as having dark patches that are opposite to what one would expect from Fitton's theory applied to dark features. Cameron 2006 extension catalog ID=88 and weight=4. ALPO/BAA weight=2.
On 2001 Apr 29 at UT 20:50 R. Braga (Italy) reported that without any filter, the brightness of the east wall of Torricelli B was halfway Torricelli C (faintest) and Moltke (brightest). By insering a Wratten 25 red filter though, the crater was slightly more evident. However using a blue Wratten 39A filter, the crater vanished completely, whilst Toricelli C remained. The ALPO/BAA weight=3.
Messier 1878 Nov 01 UT 20:00? Observed by Kleis (Cologne, Germany, 6" refractor?) "Shaped like a half moon with E. edge missing. Appeared diffuse. Messier A was sharp & completely defined. Was sure there was fog there. Next day same appear. Shadow was diffused before noon, Mess. A is more yellow after noon, greener near Mess. A noon, both are same color." NASA catalog weight=4. NASA catalog ID #206. ALPO/BAA weight=2.
On 1981 Mar 12 at UT 19:25-20:30 Butler (of Brixton, UK, using a 10" reflector at 32-64x) noticed that Aristarchus was not visible, although the Earthshine was very obvious. Foley (of Kent, UK, and using 12" reflector) noticed that the crater was only just visible but Plato could definitely be seen. Cameron's 2006 TLP extension catalog ID=125 and weight=0. ALPO/BAA weight=2.
On 1789 Sep 26 at UT 03:30 Schroter (Lillienthal, Germany) observed close beneath Mons Blanc at the west foot, in the dark, a small 5th magnitude, speck of light. Its round shadow was sometimes black, sometimes grey. Cameron suspects that this is the same as her TLP report No. 50. the Cameron 1978 catalog ID=62 and weight=4. The ALPO/BAA weight=3.
Alphonsus 1952 Nov 24 UT 18:00 A.P. Lenham (Swindon, UK, 3- inch efractor x120) noted that the usual dark spots were not visible, but floor ridges and craterlets were surperbly seen. This may not be a TLP but has been given a TLP category as it is a curious appearance and needs to be verified on a repeat repeat illumination apeparance. ALPO/BAA weight=1.
On 1980 Apr 22 at UT20:30 R.Rohslberger (Hittfield, (near Hamburg) West Germany, 8" reflector, x170 25mm occular used, 300mm focal length?) took some photographs using projection. One of these recorded an apparent "ejecta curtain". Cameron considered lens flare, but the other photographs did not show this. If real then the plume was at a height of ~40km and the ray was ~130km. Cameron concludes that this was an impact photograph. The Cameron 2006 catalog ID=90 and the weight=5. The ALPO/BAA weight=3.
On 1987 Jan 07 at UT19:10-20:30 H.Miles of Cornwall, UK saw two bright patches were seen in Earthshine at clock positions of 4 (this patch was defined by the dark limb and the brightness faded inwards to the disk, over a short distance. "Centred at 60 deg along the limb from the north - a sketch showed approximately 10-15 deg along it") and 5:30 (this second patch was smaller and not so bright as the first patch - it was west of the north pole. P. Foley (Kent, UK) also detcted the patches and said that one was not far from the sunrise terminator. The Cameron 2006 Extension catalog gives this TLP an ID of 291 and a weight of 2. The ALPO/BAA weight=2.
Alphonsus 1972 Sep 15 UTC 18:48-18:56 Observed by Hopp (13.25E, 52.5N, 75mm refractor) "Diffuse white to blue area within the crater - not sure" T=4, S=4. Ref: Hilbrecht & Kuveler Moon & Planets (1984) Vol 30, pp53-61.
On 1953 Sep 16 UT03:00 R.M. Lippert (San Diego, CA, USA, 20cm Cassegrain reflector, x90)saw a bright magnitude 1 flash on the Moon, that was probably on the east rim of Werner(?) crater. It is unclear if the observer meant it was really magnitude 1, or was what a magnitude 1 star would have looked like. The flash was yellow-orange in colour. Observation described in the "Observations and Comments" column in the December, 1953 Strolling Astronomer (Vol. 7, No. 12), on page 170. The ALPO/BAA weight=3.
Messier 1878 Nov 02 UT 20:00? Observed by Kleis (Cologne, Germany, 6" refractor?) "Shaped like a half moon with E. edge missing. Appeared diffuse. Messier A was sharp & completely defined. Was sure there was fog there. Next day same appear. Shadow was diffused before noon, Mess. A is more yellow after noon, greener near Mess. A noon, both are same color." NASA catalog weight=4 (very high). NASA catalog ID #206.
On 1989 Dec 05 D. Darling of Sun Praire, WI, USA, saw two dark spots on the SE floor of Proclus. The first dark spot was seen through 3" refractor and then also through a 12.5" reflector (35x and 154x). Seeing was S=10 and T=5. He noticed that at 23:00UT the wall spot was less well defined. Darling also comments that he observed reflecting glint, almost as if from a glass surface - he had not seen this effect before. A telephone alert was issued and Caruso verified the spots. Cameron comments that the spots were not shadows because the Sun was at an altitude of 52 deg at Proclus at the time and she states that the steepest slope ever mesured on the Moon was 52 deg and not inside Proclus. Other observers observing were: Weier (6.5" refractor x284 and S=3/10), Caruso (8" reflector x100), and Cameron. The Cameron 2006 catalog extesnion ID was 382 and the weight=1. ALPO/BAA weight=3.
Dawes 1948 Feb 17 UT 19:30 Observed by Thornton (Northwick, England, 18" reflector) "Did not see c.p. saw cleft-like streaks from SW crest to E, shadow." NASA catalog weight=3 (average). NASA catalog ID #501.
Williams of the UK, on 1882 Aug 21 at 19:30UT (Moon's age 7.9 days) noticed a spot at least half as bright, and as large as Picard, near to Picard crater. This observation was reported in the Astronomical Register of the Royal Astronomical Society and is not included in the Cameron catalogs. It is one of many measurements of the brightness of this spot for different illumination angles and is one of three outlying brightness points spotted on a graph by Willaims. The ALPO/BAA weight=3.
Pickering 1971 Jan 04 UTC 20:29-20:37 Observed by Collier (London, England) "Between Saunder and Rhaeticus, apparently coming from Pick. After 2027h it dimished with extraordinary swiftness, like a light goes out. (experienced observer)" NASA catalog weight=?. NASA catalog ID # 1281. Note that this crater was previously called E.C. Pickering before the IAU renamed some craters.
Archimedes 1967 Jan 18/19 UT 23:00?-01:00? Observed by Delano (New Bedford?. Massachussetts, USA, 12.5" ? reflector) and by Corralitos Observatory (Organ Pass, NM, USA, 24" reflector + Moonblink) "Saw an obscuration or unusual appearance on floor. Not confirmed by Corralitos MB., but their rep't says Aristarchus)" NASA catalog weight=4 (high). NASA catalog ID #1009. ALPO/BAA weight=1.
North (?) (left) Cusp 1912 Jan 28 UT 00:00 (27th 20:00 L.T.) Observed by Harris (Philadelphia? Pennsylvania?, naked eye?): Intensely black curved object 400x240km, shaped like a "crow". Cameron 1978 weight=1 (very low) and ID=334. ALPO/BAA weight=1.
Eratosthenes 1947 Jan 30 Mean Col. 16deg. Observed by Hill (UK) "Main peak of massive central mountain group appeared to be in a shadowless having regard to it's claimed height of 6,600 ft. The whole of the floor to the west should have still been in darkness. Instead immediately to the west was a dark (intensity 1.5-2) region extending almost to the foot of the bright inner wall and very diffuse in outline. The observation could not be followed through due to increasing cloud, but on the following night all was normal."
Pallas-Schroter 1953 Nov 13 UTC 02:00 Observed by L.Stuart (USA) "Saw and photographed a bright spot on term. between these two craters. Used Kodak 103aF3." NASA catalog weight=5 and catalog ID #559. ALPO/BAA weight=5.
On 1969 Nov 18 at UT 04:22 Loocks (Valparaiso, Chile, 12" reflector) observed a flash of light of magnitude 12. Cameron speculates a meteor and mentions the apollo 12 watch. The Cameron 1978 catalog ID=1214 and weight=1. The ALPO/BAA weight=1.
On 2012 Aug 25 UT1944-1952 Eratosthenes crater was imaged by C. Galdies (Malta,Nexstar 8SE, Philips SPC 900NC camera). 4 Registaxed images were produced covering 19:45, 19:48, 19:49, and 19:51. All but the first image, once first order spurious colour had been removed, showed orange on the shaded terraces on the western illuminated rim (similar to what Paul Abel and others saw in 2009, albeit just confined to the NW rim), and the interior floor shadow was slightly smaller in red light. However orange colour was also seen on the eastern side of mountains to the south of the crater, which infers that the spurios colour removal did not fully acomplish its main goal. The effects were not caused by the registax software as the orange colour is visible on individual images. Although probably the colour is not lunar in orgin, its explanation is not fully explaianed, therfore an ALPO/BAA weight of 1 is used for now.
Eratosthenes: On 2017 May 04 UT 21:50-22:10 N. Longshaw (BAA, UK, 78mm APO refractor, x125 & x175, seeing II-III, transparency Good). A brownish (orange) tint was seen on the inner NW wall light terraces - this was immediately obvious when first looking at the crater, but as time progressed the effect became less bright. Other craters were checked for similar coloured tints, but none were seen elsewhere on the Moon. UAI observers in Italy (F. Taggogna & A. Tonon) had been imaging the region in colour 17:57-21:47, but their images do not show any colour on the inner NW rim terraces, the their last image is 3 min before Longshaw saw the colour. The ALPO/BAA weight=2.
On 1886 Jun 10 at UT 21:00 (estimated) Tempel of Germany, saw a star- like light (Cameron comments that the reference in the Middlehurst catalog is wrong). Cameron 1978 catalog ID= and weight=4. ALPO/BAA weight=3.
On 1981 May 12 UT 22:00? M.C. Cook (Frimley, UK and using a 12" reflector), noticed that Censorinus was very bright, fuzzy and occasionally brighter than Proclus. However both Foley (Kent, UK) and Amery (Reading, UK) using a C.E.D. found that Proclus was brighter than Censorinus as it had been during April and May 1981. However Chapman obtained the reverse of this. Cameron 2006 extension catalog ID=138 and weught=3. ALPO/BAA weight=2.
On 1989 Dec 06 at 23:09-23:34UT D. Darling of Sun Praire, WI, USA (3" refractor x36 and x90, and then a 12.5" reflector at x64, S=7/10 and T= 4, saw dark spots in Proclus (not as dark as those from 5th Dec 1989). Two telescopes were used and the bigger of these revealed some shading on the floor of Proclus approximately a third as intense as he had seen the previous night. A sketch was made. The TLP finished by 22:34UT. Cameron comments that the dark patches could not be due to shadow as the altitude of the Sun was too high at proclus. The Cameron 2006 extension catalog ID=383 and the weight=0. The ALPO/BAA weight=2.
On 1981 May 12 UT 22:45-2325 M.C. Cook (Frimley, UK and using a 12" reflector), noticed that Censorinus was very bright, fuzzy and occasionally brighter than Proclus. However both Foley (Kent, UK) and Amery (Reading, UK) using a C.E.D. found that Proclus was brighter than Censorinus as it had been during April and May 1981. However Chapman obtained the reverse of this. Cameron 2006 extension catalog ID=138 and weught=3. ALPO/BAA weight=1.
In 1952 Nov 26 at UT 01:00? Carle (USa, 8" reflector, x700, seeing = poor) observed the following in Plato: "Sketch shows 8 spots -- 5 craters showed interior shad., 1 completely filled, but no others seen despite several hrs. of study. Spots that should have been seen were missing. poor seeing converts floor into shimmering shapeless blob. Has observed it under good seeing & seen nothing on fl. as others have noted". The Cameron 1978 catalog ID=555 and weight=3. The ALPO/BAA weight=2.
Proclus 1976 Jul 06 UT 01:35 Observed by Bartlett (Baltimore, MD, USA, 3" refractor, 40-450x, S=6, T=3) "Nothing vis. on floor (albedo=2 deg?) (usually features are vis.)" NASA catalog weight=4 (high).NASA catalog ID #1437.
Alphonsus 1969 Nov 19 UT 03:30 Observed by Argus/Astronet (CA?, USA) Brightening in W. rim & S. central floor, seen by 2 obs. (Apollo 12 watch)" NASA catalog weight 3 (average). NASA catalog ID #1219.
Plato 2005 Dec 10 UT 20:46 Observed by Brook (Plymouth, UK, 4" refractor. Conditions excellent with the Moon at a high altitude) "2 second duration white flash seen on the floor of the crater" - BAA Lunar Section Report.
On 1980 Apr 24 at 23:35UT Marco Petek (Porto Alegre, Brazil, using a 7.5" refractor noticed that the center of Plato was bright and opaque and the observer thought it was similar in appearance to Linne. A sketch was made and two other observers confirmed the appearance. Cameron mentions that Petek is an experienced observer. Cameron 2006 catalog extension TLP ID=91 and weight=5. ALPO/BAA weight=3.
Messier and A 1966 Dec 22 UT 06:00-06:30 Observed by Kelsey (Riverside, CA, USA, 8" reflector, x200, S=G, T=P) "Blinks on floors of both craters (blink device not stated)" NASA catalog weight=2 (low). NASA catalaog ID #1004.
On 1985 mar 01 at 20:00UT? Moseley noticed a violet band (tapering to an apex close to the crater centre and merged with the eastern exterior) around Toricelli B, however M. Cook (Frimley, UK) had seen a dusky band(England, UK) on an earlier photo. There was no terminator shadow in the crater. Cameron 2006 Catalog Extension TLP ID=260 aqnd weight=3. ALPO/BAA weight=3.
Censorinus-Maskelyne 1927 Apr 11/12 UTC 23:00-01:00? Observed by Druzdov (Russia) "2 luminescent pts. observed. Not vis. at same sun angle on May 7 & 12th. Not vis. on photos of Barn in 5/23/63" NASA catalog weight=3 (average). NASA catalog ID #393.
2004 Jan 02 UT 09:05 (approx) M. Collins (Palmeston North, New Zealand, ETX 90, seeing 3, clear) saw a possible(?) flash north of Carlini D at about 16W, 35N in adverted vision. It lasted only a split second. The ALPO/BAA weight=1.
Williams of the UK, on 1892 Aug 23 at Moon's age 10.0 days, noticed a spot now rated at +1.5 (in brightness) that had been seen on the 21st Aug, near Picard. Williams comments that this is the only obsewrvation that departs "much" from the curve of diurnal brightness. The spot was descibed as "nearly as large as Picard and nearly half as bright. This observation was reported in the Astronomical Register of the Royal Astronomical Society and is not included in the Cameron catalogs. It is one of many measurements of the brightness of this spot for different illumination angles and is one of three outlying brightness points spotted on a graph by Willaims. The ALPO/BAA weight=3.
Observed by Chernov (Russia) "A periodic change in shape of small dark spot at bottom of round spot further N. adjacent to inner wall. It was larger than in proceeding months at same sun elev." NASA catalog weight=2 (low). NASA catalog ID #669.
The UT given in the Cameron 2006 extension catalog are: 20:58, 23:25- 02:20 and 01:40-04:00, however it is not clear what UT applies to which of the observers or the two features reported as having TLP on that night. On 1984 Feb 12-13 Marshall (South Anerica, seeing=III-II) noticed that Moltke was very bright with a fuzzy violet hue - he had never seen it like this before. Cameron 2006 catalog extension TLP ID= 240 and weight=2. ALPO/BAA weight=3.
The UT given in the Cameron 2006 extension catalog are: 20:58, 23:25- 02:20 and 01:40-04:00, however it is not clerr what UT applies to which of the observers or the two features reported as having TLP on that night. On 1984 Feb 12-13 Marshall (South Anerica, seeing=III-II) saw initially no craterlets in Plato, despite the Moon being at a high altitude. At 01:45UT the northwest corner of Plato was red. Again no other craterlets showed. He found the surrounding wall to be too bright and this was confirmed by Crater Extenction Device readings and had problems focussing on the crater. By 02:00-02:50UT he noticed variability in the visibility of the craterlets. By 03:48UT the central craterlet was much brighter than before and the crater doublet had brightened but the southern craterlet was still invisible. Cameron comments that Marshall was a very experienced observer. A. Cook (of Frimley, UK) obtained a photodiode line scan image of Plato. The brightness of the north west wall was brighter than the bright area on the west wall. Marshall and Mosely both saw a dark area on the floor of Plato close to the south wall (from clock position of 11 o'clock. There was a prominent white spot on the floor and the central craterlet was seen, but only under good conditions. Mosely does not discuss the west and north west wall brughtnesses that were seen earlier by Cook and Marshall. Cameron 2006 catalog extension TLP ID=240 and weight=2. ALPO/BAA weight=3.
On 1981 Apr 15 at UT06:27-06:40 D. Louderback (South Bend, WA, USA using a 3" refractor x134 and S=4.5-5 and T=5-0) saw a bright spot on the western wall of Eimmart (sketch supplied) have an unusual brightening and shade. Variations occurred over 2-3 minute intervals. Louderback commented that the spot looked like a flare with its apex located at the crater wall and there was some blurring effect on the spot - it decreased in size during the phenomenon. Seeing worsened later. Apparently on the 18th and 19th of April everything was back to normal. Cameron comments that there is no bright spot on the Moon at this location. Lunar Orbiter IV plates 192-3.2 shows evening conditions. Cameron 2006 Catalog Extension TLP ID=130 and weight=3. ALPO/BAA weright=3.
Gassendi 1971 Oct 29 UT 22:15-22:50 observed by J.Coates and A.R. Neville (Burnley, UK, 6" reflectir, x192, slight fog, seeing jumpy but good at times). An in ititial Moonblink search proved negative. However white light observations by Coates revealed a golden brown colour between the black interior shadow and the base of the (bright W (IAU?) wall). Neville confirmed its appearance as a coppery hue and saw the colour for 5 minutes before it vanished at 22:55UT. ALPO/BAA weight=2
Alphonsus 1969 Nov 20 05:27 (UT)? Observed by Argus/Astronet (San Diego, Sacramento, CA, USA) "Brightening in crater. (San Diego & Sacramento obs. confirmed, but astronauts did not see anything. Apollo 12 watch)." NASA catalog weight=3 (average). NASA catalog ID #1222.
Gassendi 1967 Jan 21 UT 19:36-20:24 Observed initially by Moore & Moseley (Armagh, N.Ireland, 10" refractor, x360, S=G), Ringsdore (England, 10" reflector), Sartory (Farnham, England, 15" reflector?), Duckworth (England), Kilburn (Ashton, England, 6" reflector), Farrant (England, 8" reflector) "Eng. moon blink at 1936 (no events from 1750-1815h) outside SE wall, brighter at 1939h, seen vis. at 1940h, faint at 1946h. Moved NW at 1950h. At 2000h, Moseley saw it farther W., lost it at 2008h. Seen again at 2026h further toward group of hills. Moore saw it faint at 2002h, lost it at 2005h, vis. & blink at 2007h. Checks again at 2010-50h, 2130-50, 2200-20, 2250-2300, 2325-0000h.Duckworth suspected blink in S.Iridium nr. Bianchini later, but clouds intervened, after clearing couldn't see it. Neg. obs. in 11 other features, inc. Alphonsus & Plato. Confirmed Gass blink 2018-2024h" NASA catalog weight=5. NASA catalog ID #1010. ALPO/BAA weight=4.
Plato 1966 Dec 23 UT 06:15-07:10 Observed by Kelsey (Riverside, CA, USA, 6" reflector, S=P, T=G) and Coralitos Observatory (Organ Pass, NM, USA, 24" reflector +Moonblink) "3 brilliant spots on floor, all showed blinks, (permanent colored Ground features ?). Not confirmed by Corralitos MB." NASA catalog weight=2 (low). NASA catalog ID #1005.
On 1985 Mar 02 at 20:00UT? Marshall (Medeline, Colombia, South America) measured some very low Crater Extinction Device brightness readings of Censorinus compared to Proclus. The Cameron 2006 catalog extension ID= 261 and the weight=3. ALPO/BAA weight=2.
On 1990 Sep 30 at D. Darling (Sun Praire, WI, USA, 12.5" reflector, x150) observed a red spot on the west wall (bright in red filter and faint in the blue filter. No filter reactions were found elsewhere. Gassendi had much detail visible. A sketch was made. BAA observers in the UK were alerted but they could not observe due to cloud. Cameron 2006 extension catalog ID=411 and weight=5. ALPO/BAA weight=3.
Gassendi 1977 May 28/29 UT 20:45-21:15 Observed by D. Sims (Dawlish, Devon, UK) saw a hazy area on the south east floor that was normal in red and white light but darker in blue. This was partly confirmed by J-H Robinson (Devon, England, 10" reflector) 21:24-23:12 who saw the south east floor of Gassendi to have a loss of detail - but no colour seen, although at 21:57-21:58 it was slightly brighter in red than in blue briefly. P. Doherty (22:45-23:15) did not see anything ususual. D. Jewitt (22:22-22:55) did not reveal anything ususual, apart from spurious colour. The Cameron 1978 catalog ID=3 and ID=1463. The ALPO/BAA weight=3.
Aristarchus, Schroter's Valley, Herodotus 1881 Aug 06 UT 00:00? Observed by Klein (Cologne, Germany, 6" refractor, 5" reflector) "Whole region between these features appeared in strong violet light as if covered by a fog spreading further on 7th. Examined others around & none showed effect. Intensity not altered if Aris. placed out of view." NASA catalog weight=4 (high). NASA catalog ID #224. ALPO/BAA weight=3.
On 1982 Apr 04 at UT 23:30-00:25 P. Madej (Huddersfield, UK, 7cm refractor & 16cm reflector) noticed the TLP in his refractor first of all at x25. So stepped up the magnification to x111 and found the crater brightness not what he was expecting. He tried different filters but found no difference in brightness. With the 16cm reflector however some changes in brightness were dected. The crater has a very pale yellow colour and it was slightly darker than Lacus Somniorum. P. Foley tried to confirm at 00:09 but the crater looked normal then. The Cameron 2006 catalog extension TLP ID is 167 and weight=3. ALPO/BAA weight=2.
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.
Cobra Head 1949 Feb 10 UT 00:00? Observed by Thorton (Northwich, England, 18" reflector) "I was examining the Cobra Head of the Schroter Valley, when I noticed what seemed to be a diffuseed patch of thin smoke or vapour, apparently originating from the valley on the E. Side where the landslip is, and spread over the edge on to the plain for a short distance. Every detail of the edge of the valley was perfectly clear and distinct except where this patch occurred, but there the definition was poor and very blurred" NASA catalog weight=4 and catalog ID #515. ALPO/BAA weight=1.
Observed by Firsoff (Somerset, England, 6.5" reflector? x240) "Red glow." NASA catalog weight=4 (high). NASA catalog ID #573.
Bullialdus 1974 Sep 27 UT 22:45-23:40 Observed by Findlay, Ford (Dundee, Scotland, 10" refractor, 150x, 180x, filters) "Saw yellowish- orange color in crater. After clouds passed at 2300h color still there & gave a slight blink which no other craters did. Not seen in red filter, dark in blue. Ford saw it along ridge fr. c.p. to SW wall. Alert did not bring confirm. as clouds intervened for all others." NASA catalog weight=4. NASA catalog ID #1394. ALPO/BAA weight=3.
On 1987 Jan 11 at UT 18:15-23:00 P. Grego (Birmingham, UK, 6" reflector, seeing=III) sketched Aristarchus crater and saw two luminous circular patches on the exterior west wall - these were less bright than the inner wall but brighter than the outer wall. The Cameron 1978 catalog ID=292 and weight=5.
On 1987 Jan 11 at UT P. Moore (Sussex, UK) found the the floor of Plato was much more drk than the adjacent Mare Imbrium. Furthemore there was a blurring of detail over the northeast wall and onto the nearby floor. detail elsewhere in the crater was OK. By 23:00UT there was less lack of detail effects. M. Cook (Frimley, UK) at 21:55UT noted the obscured area but decided that it was narrower than the same effect one month ago and suspected that she may have been observing towards the end of this TLP. The effect gradually dimmed between 21:55 and 22:45UT. Other craters were normal. G. North was affected by poor seeing conditions. Davies detected a slight obscurtion on the north east corner - it was a misty gray feature at x200. The Cameron 2006 catalog extension ID was 292 and the weight was 5. Tha ALPO/BAA weight was 4.
On 1990 Oct 1st at 00:44-01:24UT D Darling (Sun Praire, WI, USA) observed that Gassendi still had a blink effect when viewed through blue (Wratten 38A) and red (Wratten 25A) filters. No effect was seen on Aristarchus. Gassendi was brighter in the red filter and this was confirmed by Weier. Sketches were made and brightness measurements taken. Both observers used a 12.5" reflector x159. At 01:00UT the NW wall was 7.5, the SW wall 8.0, the S. wall 7.5, the floor 6.0, the outer E. wall 8.0, the N. floor 5.5. Gassendi A W. wall was 9.5,l Aristarchus W. floor was 8.0, NW wall 8.0, shadowed floor 0.0, E. outer wall 7.0, NBP 5.5, area between Aristarchus and Herodotus 6.0, and the comet like tail: 8.2 on the E. and 8.5 on the W. The Cameron 2006 catalog extension TLP ID=412 and weight=5. The ALPO/BAA weight=4.
Torricelli B 2005 Jan 22 UT 03:15-03:23 Observed by Raul Salvo (Montevideo, Uraguay UT 03:15-03:23) showed that Torricelli B was dark, and there was some brightness variability although the background setting on these images was low and seeing could account for the brightness variation? An ALPO report.
Schroter's Valley 1955 Aug 29 UT 19:45 Observed by Firsoff (Somerset, England, 6.5" reflector x200, S=P-F) "Valley almost completely invisible in blue" NASA catalog weight=4 (high). NASA catalog ID #605.
Hobdell, of St Petersburg, FL, USA, using a 2"? refractor? and Seeing=I-II, saw a bright region on the north west wall that seemed to change in brightness. In truth, there were other features elsewhere on the Moon that also fluctuated, but not as much as Aristarchus was. No colour was noticed. Cameron suspects fluctuations in our own atmosphere. Cameron 2006 extension catalog ID 131 and weight=1. ALPO/BAA weight=1.
Aristarchus 1976 Sep 05/06 UT 18:45-01:35 Observed by Prout (England?, 12" reflector, S=III-II), Foley (England, 12" reflector), Moore and Spry (Sussex, England, 12" reflector) "Viol. hue on crater on W. wall, especially NW corner seen by Prout & 2 Foleys. Moore & Spry did not see color. All obs. noted that the crater was dull
Proclus 1970 Oct 12 UT 00:54 Observed by Bartlett (Baltimore, MD, USA, 4" reflector, 51x-181x) "Floor darkened to intensity 1.5 deg (albedo) & c.p. became invis. Next day c.p. reappared & was 5 deg bright & 6deg bright on 15th" NASA catalog weight=4 (high). NASA catalog ID #1277.
Observed by Bartlett (Baltimore, MD, USA, 5" reflector x180, S=1-5, T=5) Pseudo peak visible within floor shadow at 03:10h" NASA catalog weight=4 (high). NASA catalog ID #671. ALPO/BAA weight=3.
On 2002 Feb 24 UT 05:15-05:35 W. Haas (Las Cruces, NM, USA) observed an obscuration in Herodotus - the shadown was, almost, but not completely black. ALPO/BAA weight=2.
Schickard 1972 Sep 19 UT 19:45-20:25, 20:00-23:30 Observed by Watkins (Herts., Eng. 4.5" reflector, x225, S=G) Amery (Reading, Eng.m 12" reflector?), Fitton (Lancashire, Emg., 8.5" reflector) and Moore (Selsey, Eng., 12.5" reflector?, 4.5" refractor 45-225x, S=P) "Luminous, nebulous spot attracted Watkin's att'n. Got brighter. Checked 'scope--not instru. Obj. had greenish-gray color, size @ 15km. Amery & Fitton with blink devices noted nothing unusual at later times (2000-2330h). Aris., Plato, Gass. were neg. at 1930-2025h (date not given, guessed at fr. available info.). Turbulence, lasting secs. at a time." NASA catalog weight=2. NASA catalog ID # 1344. ALPO/BAA weight=2.
On 2002 Feb 24 UT 06:05-06:20 W. Haas (Las Cruces, NM, USA) observed that the shadow was, almost, but not completely black. This might have been related to the observing conditions. ALPO/BAA weight=2.
On 1955 Oct 28 at UT00:00? Kozyrev (Crimea, Soviet Union, 50" reflector) detected in Aristarchus Fraunhofer lines in UV spectra that were much narrower than in the solar spectrum. This indicated luminescent glow which overlapped contour(?) lines. Greatest after Full Moon, but fluctuated monthly with no indication of solar activity effect. The Cameron 1978 catalog ID=621 and the weight=5. The ALPO/BAA weight=5.
On 1955 Oct 28 at UT 00:06 W. Taylor saw a naked eye flash on the Moon in the north east area, on the edge of Mare Vaporum. The flash was intense and radiated to a large area. The duration was 1/4 seconds.
Aristarchus, Schroter's Valley, Herodotus 1881 Aug 07 UT 00:00? Observed by Klein (Cologne, Germany, 6" refractor, 5" reflector) "Whole region between these features appeared in strong violet light as if covered by a fog spreading further on 7th. Examined others around & none showed effect. Intensity not altered if Aris. placed out of view." NASA catalog weight=4 (high). NASA catalog ID #224.
Aristarchus 1981 Mar 17 UT 22:40-23:25 Observed by Moore (Selsey, England, 15" reflector, seeing III) "Aristarchus very bright according to Crater Extinction Device and a coloured blink detected" BAA Lunar Section TLP report. ALPO/BAA weight=1.
On 2016 Jun 17 UT 05:00 A.Anunziato (AEA, Argentina Meade ETX 105, seeing 7/10, sketch made) observed a very tiny light spot where the shadow from topographic relief to the south of Vallis Schroteri nerges into the crater rim shadow on the floor of Herodotus. There should be no light spot here. ALPO/BAA weight=1.
Gassendi 1939 Aug 27 UT 02:00 Observed by Haas? (NM? USA, 12" reflector?) "NE part of c.p. was I=6.4, compared with I=9.4 on 9/28/39 (see #462) under similar cond.@ NASA catalog weight=4 (high). NASA catalog ID# 458.
All observers saw a blue tinge seen inside and outside the crater. Marshall observed a bright spot in the middle of the crater floor and thought perhaps that it was a central peak. No central peak can be found on Lunar Orbiter images. Cameron 2006 Catalog extension ID=214 and weight=5. ALPO/BAA weight=4.
Proclus 1976 Sep 06 UT 02:00 Observed by Bartlett (Baltimore, MD, USA, 4.5" reflector 45-300x, S=3, T=5) "Nothing vis. on floor of 2deg brightness. Usually floor ray & Proc. A are vis. at this col. & c.p. is 5 deg bright. (must have been 2 deg tonite)." NASA catalog weight=4. NASA catalog ID #1450.
Cobra Head, Aristarchus 1964 Feb 25 UT 02:37-02:38, 02:39-02:42 Observed by Budine (Binghamton, New York, USA, 4" refractor, x250, S=6, T=4) "Red flashes" NASA catalog weight=3 (average). NASA catalog ID # 802.
M. Cook of Frimley, "NE ray distinct & also floor E of it, not distinct as on Dec 13 & Jan 11, while March 10, 11 & 12 seen by Price, North, Peters, Foley & M Cook, where rim was clear and sharp." - quote from the 2006 Cameron Catalog extyension - TLP ID=297 and weight=5. Cameron gives the observers confirming this TLP as: M. Cook, G. North and Davies.. ALPO/BAA weight=3.
Babbage 1974 Sep 29 UT 00:00-01:00 Observed by Lord (St Annes- on-Sea, UK, 10" refractor, Wratten 25 and 44a filters, 125x, S=II-III). Activity observed in SW floor between A & W. wall. Details not obscured in either filter, but slightly more darker than surroundings in the blue filter. NASA catalog weight=2. NASA catalog ID #1395. ALPO/BAA weight=2.
1996 Jun 28 UT 21:04 F. Ferri and D. Zompatori (Anzio), using a 20cm f/6 reflector, reported that (translation) "Using a blue filter the area was invisible". This is a UAI observation from Italy. ALPO/BAA weight=1.
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 1990 Oct 02 at 02:25-02:45UT D. Darling (Sun Praire, WI, USA using a 12.5" reflector at x159, with red and blue filters), saw a blink effect on the west wall of Plato i.e. brighter through a blue filter than through the red. No Colour blinks seen on Gassendi or Aristarchus. Cameron 2006 Catalog TLP=413 and weight=4.
On 1988 Jan 02 at 05:57-06:13 UT D. Louderback (South Bend, WA, USA, using a 8" reflector, seeing 4 out of 10) observed that points B and D on Cape Agarum faded suddenly from 7.0 to 6.4 (B) and 6.0 (D). However these returned to their normal levels at 06:13 UT. Cameron 2006 extension catalog ID=316 and weight=4. ALPO/BAA weight=3.
Schroter's Valley 1897 Oct 08 UT 22:00 Observed by Pickering (Cambridge, Maas., USA, 15"? refractor) "Variations in vapor col. Tillsow, C was largest compared with D&E& most conspicuous 1.3 d after sunrise. Drawing. (time est. fr. given colon.)" NASA catalog weight=3 (average). NASA catalog ID #291.
On 1984 Feb 14 P. Moore (Selsey, UK) thought that there was something odd about Mons Pico in that it looked very bright and gave a good impression of a crater. Cameron 2006 catalog extension ID=241 and weight=5. ALPO/BAA weight=2.
On 1984 Feb 14 P. Moore (Selsey, UK) observed that Plato was darker than the nearby mare and no detail could be seen on the floor or the eastern wall - the later was obscured. At 23:40UT some dimming was still present on the north east wall and still no detail on the floor of Plato. Cook noticed that the eastern floor close to the wall was misty and also noted no detail on the floor. Amery though noted that all parts of the floor were sharp although some darkening was visible in the north west and a hint of obscurtion. The east wall though was quite sharp. Mosely could see the central craterlet but from 8-6 o'clock tricky to define (Foley says that this effect has been seen at this colongitude before). Streak ray across the floor of Plato seen (North) - filter measurements made. Cameron 2006 catalog extension ID= 241 and weight=5. ALPO/BAA weight=2.
On 1977 May 30 at 21:04-02:13UT J.H.-Robinson noted a loss of detail inside Gassendi, however he did not regard this as a TLP. The effect was also seen by P.W. Foley. Cameron 2006 extension catalog TLP ID=16 and weight=0 ALPO/BAA weight=1.
On 1988 Jan 02 at 06:41-07:08 UT D. Louderback (South Bend, WA, USA, using a 8" reflector, seeing 4 out of 10) observed that at 06:56 UT Aristarchus floor (point F) brightened rapidly from an intensity of 5.2 to 6, however at 07:08 UT the spot returned to normal. He also noticed that the bands on the walls varied every few minutes. A mist like appearance was seen on the floor of Aristarchus. Through a red filter he could see through the haze, but floor detail could not be seen through a blue filter. Cameron 2006 extension catalog ID=316 and weight=4. ALPO/BAA weight=3.
Flashing spot at end of SV fluctuated. Herzog, Darling & Weier confirmed spot but not fluctuation. Spot brighter in red than blue, but Cobra Head was bright in blue. No other region was abnormal.
On 1980 Apr 28, Louderback (South Bend, WA, USA using a 8" reflector and a 2.5" refractor) observed a very bright reg region on top of the south west rim of Aristarchus crater. This was on the same side as the ray system between Aristarchus and Herodotus. Louderback noticed some chromatic aberation - blue where he had seen the red patch before. Louderback suspects chromatic aberation was the cause although did not see red in that region ever again. "Patch was between his observation points A and C. Point C was 5 points brighter in the red filter than in the blue." A sketch was made. Cameron suspects that the TLP was real. Cameron 2006 TLP catalog extension ID=92 and weight=3. ALPO/BAA weight=2.
Louderback observed that the south west wall was a creamy deep yellow. There was also strong fluorescent blue on the west wall of the Cobra Head - Schroter's Valley area and this was similar to the violet glare seen on Aristarchus at times. Violet was seen between Aristarchus and the Cobra Head. Seeing coditions were poor. Brightening of a point near C occurred roughly every 10-15 seconds and lasted 0.5 sec - (Cameron concludes that this was not due to the Earth's atmosphere). A 0.2 step drop in brightness was seen on point A (twin spots). Point C had reduced by 0.6 steps. Elsewhere was stable in brightness. Cameron 2006 catalog ID=281 and weight=4. ALPO/BAA weight=3.
Variations in vapor column rising from the Cobra Head feature (seen on several nights in succession) and also in the visibility of craterlets A, C, F. Sunrise +2d. (time est. fr. gives colongitude). Cameron 1978 catalog ID=279 and weight=3. Pickering was observing from the southern station of Harvard University in Arequipa, Peru.
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.
Mare Humboldtianum 1951 Jan 21 20:47-22:00 UT observed by Baum (Chester, England). The appearance of some mountains on the limb appeared to change over time, with some mistiness. ALPO/BAA weight=2.
Madler 1940 Aug 17 UTC 06:45 (Cameron gives 07:30 but Haas says this is wrong) Observed by Haas (New Mexico?, USA, 12" reflector?) "Bright spot on S. rim had I=5.9 on this date but 6.8 on Sep. 16, when observ. cond. were similar (see #473)" NASA catalog weight=4. NASA catalog ID #470. ALPO/BAA weight=3.
Plato 1937 Jul 22 UT 06:20 Observed by Haas (Alliance, Ohio, USA, 12" reflector?) "Floor distinctly greenish, but was gray on June 23, 1937 at 0430 & col.84 (normal?)" NASA catalog weight=4 (high). NASA catalog ID #421. ALPO/BAA weight=3.
Plato 1916 Oct 10 UT 21:00? Observed by M, Maggeni (Florence Obs., Italy) "Reddish shadow spread over part of crater. Looked like vapor (like nitrous vapor) and obscured underlying craters. The Cameron 1978 catalog weight=3 and ID = 365. The ALPO/BAA weight=3.
Aristarchus, Cobra Head, 1969 Dec 23 UT 05:19-05:34 Observed by A.R. Taylor (Buckinghamshire, UK, 8.5" reflector, 240x, Wratten 25 and 80B) Strong blink in crater at 0519. All traces gone by 0534. Could only see in filters, Plato, Copernicus, Gassendi all normal. Obscur. also in Cob. Head." NASA catalog weight=4. NASA catalog ID #1230. ALPO/BAA weight=3.
Stevinus 1961 May 29 UT 02:45-03:30 Observed by Cameron (Adelphi, MD, USA, 3.5" reflector, x160, Questar, Seeing=good) "Craters stood out like glittering points (small craters on rims?). Only anomalies among many features examined (specular refl. from flat surface?)." NASA catalog weight=4. NASA catalog ID #738. ALPO/BAA weight=1.
Furnerius 1961 May 29 UT 02:45-03:30 Observed by Cameron (Adelphi, MD, USA, 3.5" reflector, x160, Questar, Seeing=good) "Craters stood out like glittering points (small craters on rims?). Only anomalies among many features examined (specular refl. from flat surface?)." NASA catalog weight=4. NASA catalog ID #738. ALPO/BAA weight=1.
Eratosthenes 1976 Sep 08 UTC 04:29 Observed by Bartlett (Baltimore, MD, USA, 4.5" reflector 45-225x, S=5-4, T=5) "Psuedo-shadow X3 was present but X disappeared from wall(same intensity?) which was rated 4 deg. Disappearance of X so unexpected that he examined inner S wall very carefully & was certain it was free from psuedo-shad. Had vanished within 24h. Other pseudo-shadows showed no change. X reappeared next nite. (X must have been 4deg; &this is much higher than any other meas.). Variability of wall shadows may habe been what Pickering saw, suggests Bartlett." Cameron 1978 TLP catalog weight=4 and catalog ID 1452. ALPO/BAA weight=2.
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.
Aristarchus 1954 Oct 12 UT 00:55-02:10 Observed by Bartlett (Baltimore, MD, USA, 3.5" refractor x100, S=5-6, T=5) "Pale violet radiance on S.wall SE, E, NE walls, & c.p. At 0409 strong violet tint E 1/2 of fl.very faint on W. 1/2 of floor & W. wall. Dark violet on nimbus & pale violet on Mt. m" NASA catalog weight=4. NASA catalog ID #576. ALPO/BAA weight=2.
On 1989 Oct 14 UT 19:00?, 22:00? P.W. Foley (Kent, U.K., using a 12" reflector) noted that although the brightness of Aristarchus crater seemed steady, that there was just too much detil to see inside the crater than one would expect. Appeared as two craters - Cameron commented that this was often seen by Bartlett. Several observers apparently confirmed this TLP? Cameron 1978 catalog extension ID=379 and weight=5. ALPO/BAA weight=2.
Plato 1878 Nov 09 UTC 21:00 UTC Observed by Klein (Cologne, Germany, 6" refractor?) "Faint, but unmistakable white cloud not seen before." NASA catalog weight=4. NASA catalog ID #207.
Aristarchus 1973 Feb 15 UTC 17:07-19:31 Observed by Theiss (located at 51N 5.67E) "area 4-5 diameters of Aristarchus were coloured clearly yellow-red" 120mm reflector used. Ref Hilbrecht & Kuveler (1984) Moon and Planets Vol 30 p53-61. ALPO/BAA weight=1.
Plato 1973 Aug 13 UT 22:25-22:35 observed by Pedler (Devon, UK). Observer noticed a slight blink on a lighter patch on the floor just beneath the south(?) rim using Moon blink filters. ALPO/BAA weight=1.
David Darling observed bright glittering on Aristarchus. This was followed by a flare up in brightness at 00:38:05 UT in the comet-like ray area of the crater equivalent in intensity to the central peak. Then he saw another one on the north east rim of Aristarchus of the same brightness. A third flare was seen at 00:49UT in south of Herodotus, on the comet-like ray. Another two flares were observed at 00:56UT on the north west rim of Aristarchus. Darling suspects that these effects were due to seeing effects and Cameron agrees. However Weier suspects that they were TLP? Brightness measurements by Weier were for the south west rim of Herodotus 8.0, for a spot at the Cobra's Head 9.0 and 7.5 for C.H. Cameron apparently did not see the flashes but did suspect that the interior of Aristarchus was a bit unusual. Don Spain did not see anything unsual at all. Cameron 2006 extended catalog ID=380 and the observation weight=3. The ALPO/BAA weight=2.
Herodotus 1971 Dec 02 UT 20:40 Observed by Kilburn (Manchester, UK, 8" refractor, x130, Transparency very good with a thin mist, seeing excellent, x130). Bright point (considerably brighter than its surroundings) was seen on the SE of the illuminated floor of Herodotus in white light. It was quite close to the crater rim. The spot had no colour. ALPO/BAA weight=2.
Aristarchus 1967 Dec 16 UTC 22:00? Observed by Farrant (Cambridge, England, 8" reflector) "Crater took on an unusual appearance on inner NE (ast. ?) wall. Showed a very pale blue & the opposite wall a pale red color seen in no other features. Lasted only 10m & survived a change of eyepieces." Seeing=I (Antoniadi). NASA catalof weight=3 (average). NASA catalog ID #1056.
On 2002 mar 29 at 02:20-02:38UT C. Brook (Plymouth, UK, 60mm refractor, x120 - no cloud, slight haze, no wind, seeing good) noticed during first part of observing period that Aristarchus was getting steadily brighter, very much brighter than Proclus. This continued until 02:36UT when it dimmed suddenly over a period of about a minute or so. No colour effects seen. ALPO/BAA weight=2.
On 2002 mar 29 at 02:20-02:38UT C. Brook (Plymouth, UK, 60mm refractor, x120 - no cloud, slight haze, no wind, seeing good) noticed during first part of observing period that Aristarchus was getting steadily brighter, very much brighter than Proclus. This continued until 02:36UT when it dimmed suddenly over a period of about a minute or so. No colour effects seen. ALPO/BAA weight=2. Just as an after thought - was it Aristarchus that was varying, or Proclus?
Louderback, of South Bend, WA, USA observed a bright area over Mons Anguis and Eimmart - it resembled a comet and had a bluish colour and varied in brightness. The colour was confirmed as it was not seen in a red filter but could be seen in blue and white light. Other features were checked but did not show anything similar although a violet glare was suspected in the blue filter. A sketch was made. Observer made Eimmart 8 in brightness at 07:30UT. Noted that the area around Eimmart appeared opaque at times and less so at other times. At 08:52UT the phenomenon was seen again. On May 2nd a bright spot was still seen in the region but it was not changing dimensions. During the observation on Apr 30th the atmospheric transparency was excellent. A 2.5" refractor was used. Reference: Personal communication from Louderback to Cameron on 1980 Jul 16th. The Cameron 2006 catalog extension ID of this TLP was 93 and the weight was 4. ALPO/BAA weight=3.
CCD images taken through Wratten 25 (red+near IR) and 87 (near IR only) filters. Between 00:02 and 00:25UT there was some slight evidence that a fade may have taken place however careful analysis by Cook casts doubt on this. Probably it was more related to a degradation in image quality due to seeing than a true TLP. An ALPO/BAA weight of 1 has been assigned.
Aristarchus 1973 Oct 12 UTC 18:13-18:45 observed by Pasternak "Bright region of the S. of the crater, color was red." - Hilbrecht and Kuveler, Earth, Moon & Planets, 30 (1984), p53-61. ALPO/BAA weight=1.
On 1970 Nov 14 UT20:10 J.Coates (Burnley Astromical Society, 8.5" reflector, x102 and x204) saw a dirty green colour on the NW region of the crater, in patches, with a green area nearby. ALPO/BAA weight=1.
Aristarchus 1962 May 20 UTC 08:00? Observed by Wildey, Pohn (Mt Wilson, CA ?, 60" reflector? Photometer) "Reddish color in Aris. 0.88 magnitudes brighter than normal (photometry)." NASA catalog weight=5 (very good). NASA catalog ID #758. ALPO/BAA weight=3.
Bullialdus 1962 May 20 UTC 08:00? Observed by Wildey, Pohn (Mt Wilson, CA ?, 60" reflector? Photometer) "1.05 magnitudes brighter than normal (photometry)." NASA catalog weight=5 (very good). NASA catalog ID #758. ALPO/BAA weight=2.
Kepler 1962 May 20 UTC 08:00? Observed by Wildey, Pohn (Mt Wilson, CA ?, 60" reflector? Photometer) "1.03 magnitudes brighter than normal (photometry)." NASA catalog weight=5 (very good). NASA catalog ID #758.
Enhancement of spectrum in UV and CaI recorded on photoelectric spectrometer scans by Grainger and Ring in Italy. Effect seen on Aristarchus. Cameron 1978 catalog ID=740 and weight=5. ALPO/BAA weight=5.
1969Jan04 UT19:30-20:00 W.Deane (Hendon, UK, 2" refractor) observed a bright yellow spot just E of Aristarchus, stretching from the S. end of Montes Harbinger to the S. wall of Prinz. The ALPO/BAA weight=1. ALPO/BAA weight=1.
On 1984 Feb 18 at 05:35UT Moseley (Coventry, UK, 6" reflector, x120, seeing II-III, transparency very poor to good) found that the crater was difficult to define. However observing conditions variable. P. Moore observed that the crater was normal at 04:00UT. Moseley found the crater well defined later. Cameron 2006 catalog extension ID=242 and weight=3. ALPO/BAA weight=1.
Plato 1870 Apr 17 UT 22:00? Observed by Gledhill? (Halifax, England, 9" refractor) "Group 1 again in illum. as in Aug., Sep. 1869 observations." NASA catalog weight=2 (low). NASA catalog ID #166.
In 1941 Jul 11 at UT 04:00? Haas (New Mexico?, USA, 12" reflector) observed near Hansteen "Moving luminous speck, estimated 0.1" diam., mag 8 (rept. date was 10. Lunar meteor?". The Cameron 1978 catalog ID= 487 and weight=3. The ALPO/BAA weight=2.
On 1986 Feb 26 at 05:00UT a photograph was obtained by T. Kohman of Pittsburgh, PA, USA (3.5" Questar and 0.25 sec exposure) that had two bands above the limb, resembling ejecta plumes. Cameron suspects that these are probably flare from the eyepiece optics. Cameron 2006 extension catalog ID=282 and weight=0. ALPO/BAA weight=1.
Gassendi 1967 Jan 28 UT 00:04-01:06 Observed by Moseley (Armagh, Northern Ireland, 10" refractor, x350, Seeing=Good) "Small moon blink (Eng.) not quite concentric with the crater, half way from c.p. to SE (IAU?) wall. Lasted till 0007h then clouds. Seen again at 0100h-0106h, then lost with poor seeing. Looked again at 0148, 0230, 0310, but neg. Other areas also neg." NASA catalog weight=4 (high). NASA catalog ID # 1013.
Aristarchus 1969 Dec 26 UT 03:35-03:45 Observed by Kilburn (England, 6" x192) "Suspected faint blink & glow outside of SW(IAU?) wall. Large area was gray toward Herod. Another blink inside between 2 bands at0330h. At 0345h neither blinks seen. Blink seen in blue (=red event?). Next nite crater was normal." NASA catalog weight=3 (average). NASA catalog ID #1231.
Plato 1971 Dec 05 UT21:00-21:10 D.B.Taylor (Dundee, UK, 10" refractor, conditions poor and turbulent). Observer suspected colour orange colour near bright spot on north wall. Observation ceased due to being clouded out. ALPO/BAA weight=1.
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.
In 1897 Oct 14 at UT 00"50 Pickering (Cambridge, Mass. USA, 15" refractor?) observed "Refractive displacement of lunar atm. at bright limb was 0.4" (time is for occultation of Alctone in Pleiades)" The Cameron 1978 catalog ID=294 and the weight=3. The ALPO/BAA weight=1. Note this may? refer to an occultation, in which case it will be pointless to observe again for a particular illumination.
Grimaldi 1937 Sep 23 UT 05:00 Observed by Firsoff (Glastonbury, England, 6" reflector + filter) "Variations in green. Strong green on this date. Other dates of variation are: Date Time Color 4/29/37 0930 slight 3/23/38 09?30 strong 7/24/38 0830 gray-green NASA catalog weight=4 (high). NASA catalog ID #424.
On 1944 Mar 12 at UT 23:00 H.P. Wilkins (Kent, UK, 8.5" reflector) observed that Plato appeared incomplete - the central crater had it's north wall obscured. cameron comments that maybe this was due to the low altitude of the Moon? The Cameron 1978 catalog ID=491 and the weight=4. The ALPO/BAA weight=2.
Birt 1972 Sep 25 UT 23:20-23:45 Observed by Doherty (Stoke-on-Trent, England, 10" reflector x280, S=VG) "All bright areas were similar in intensity (albedo) but 2 larger ones at times seemed brighter. N & S. The E. IAU? wall of the small craterlet showed most prominently & at times suspected a faint pt. of light just W. of its center. This was very suspect however." NASA catalog weight=1 (very low). NASA catalog ID #1345.
Darling, alerted by Keyes saw Aris >> brighter obj on moon (as it normally is) Comet ray & N rim of Herod. >> could see no detail - Aris. except two bands, moon was pale yellow (low alt.) with halo around it. Nothing unusual elsewhere. Cameron 2006 catalog extension ID #384 and weight=0. ALPO/BAA weight=1, just in case there is some merit in this report?
Darling, alerted by Keyes saw Aris >> brighter obj on moon (as it normally is) Comet ray & N rim of Herod. >> could see no detail - Aris. except two bands, moon was pale yellow (low alt.) with halo around it. Nothing unusual elsewhere. Cameron 2006 catalog extension ID #384 and weight=0. ALPO/BAA weight=1, just in case there is some merit in this report?
Near Bacon, Barocius, Nicolai i.e. 16E-25E, 52S-42S 1878 Nov 13 UTC 02:30 Observed by Hammes & others (Oskaloose, Iowa, USA, 6.5" reflector) "Lunar volcano (drawing) (investigation & correspondence cast doubt on location)" NASA catalog weight=? NASA catalog ID #208.
LeCroy Jr. and Sr. (Springfield, VA, 4.5" reflector, x75, S=VG, T=3) observed the following in the Aristarchus and Herodotus region: "Prior to 0542h the 2 craters were 2 bright spots within bright areas. Then a brightness developed merging them together into one big bright area with no discernable details. Returned to normal at 0554h. Sketches. Albedo=10+ where normal albedo is 9.5". The Cameron 1978 catalog ID= 1413 and weight=4. The ALPO/BAA weight=3.
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.
Plinius 1937 Jul 27 UT 04:37 Observed by Haas (Alliance, OH, 12"? reflector) "E. end of c.p. varied in intensity at similar lighting conditions. Intensity was low est on this nite, being at I=5.0. Other nites were: Date Time col. I 6/23/37 0600 84 8.5 7/20/37 0200 58 6.0 7/22/37 0300 78 6.5 9/22/37 0700 114 6.0 9/24/37 0830 142 6.5 10/17/37 0100 59 8.5 10/21/37 0500 109 8.5 NASA catalog weight=4 (good) on this and the nights listed. NASA catalog ID #422. ALPO/BAA weight=3.
Aristarchus 1969 Dec 28 UT 00:24 Observed by Kilburn (England, 6" reflector x192) "Blink in same place as #1231. Very faint and large area." NASA catalog weight=3 (average). NASA catalog ID #1232.
Observed by Bartlett (Baltimire, MD, USA, 5" reflector, x150) "N. half of crater hazy & ill-defined". S=5, T=4. NASA catalog weight=4 (good). NASA catalog ID 571.
Schroter's Valley & Vicinity 1897 Oct 15 UT 19:00 Observed by Pickering (Cambridge, Mass. USA, 15"? refractor) "Variations in vapor col. change in direction of cloud rising from F is marked - (time est. from given colon.)" NASA catalog weight=3 (average). NASA catalog ID # 292.
Theophilus 1971 Dec 06 UT 21:35-23:20 Observed by Findlay, Ford, Taylor, Robbie (Dundee, Scotland, 10" reflector x180), Bolger (Chester, England), Fitton (Lancashire, England, 8" reflector). "Red-orange patch on E. (IAU?) floor even without a blink. Others confirmed. Dimmed by 2105h but still seen. Dimmer yet at 2230h & gone at 2300h. Baum saw brownish-red patch at 25.5E, 12.5S. Taylor saw reddish patch SE of crater, fainter at 2220h, gone at 2300h. Fitton saw image very dull,yellow & steady. Filters showed nothing unusual, & nothing seen at 2320h." NASA catalog weight=5. NASA catalog ID #1320. ALPO/BAA weight=3.
Aristillus 1939 Sep 03 UT 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. NASA catalog ID #459. ALPO/BAA weight=3.
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. NASA catalog ID #450. ALPO/BAA weight=3.
Aristarchus 1973 Oct 16/17 UT 22:16-01:00 Observed by Morgan (England) "Invis. of NW wall bands. Seeing by no means perfect" NASA catalog weight=1. NASA catalog ID #1376. ALPO/BAA weight=1.
Aristarchus region 1955 Sep 07 UT 03:00 Observed by Firsoff (Somerset, England, 6.5" reflector x200, S=VG) "A dirty brown misty effect on the area NE (Ast. ?) of crater. Darkened in blue & yellow filters alike." NASA catalog weight=5 (very high). NASA catalog ID #608.
Copernicus 1955 Sep 07 UT 03:20 Observed by Firsoff (Somerset, England, 6.5" reflector x200, S=VG) "Brightening up of crater in the blue filter" NASA catalog weight=4 (high). NASA catalog ID #607.
In 1955 Sep 07 at UT 03:45-05:20 Bartlett (Baltimore, MD, USA, S=5, T= 3) observed the following in Aristarchus crater: "Strong blue-viol. gl. in E, NE rim & E. base of c.p. Dark viol. nimbus, granular aspect of floor". Cameron suggests that this is confirmation of Firsoff's TLP of the same day? The Cameron 1978 catalog ID=609 and weight=5. The ALPO/BAA weight=2.
Eratosthenes 1976 Sep 14 UTC 04:24 Observed by Bartlett (Baltimore, MD, USA, 4.5" reflector, 45-300x, S=6, T=3 hazy) "Pseudo shadow F disappeared & wall here is same intensity as whole inner crater wall, = 4deg. No change in X, X3 or X2 (4 deg much brighter than normal)." NASA catalog weight=4 (good). Cameron c1978 atalog ID=1453 and weight=4. The ALPO/BAA weight=2.
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.
Taurus Mts 1955 Sep 08 UT 01:35 (Sep 08 EDT 07:35) Lahbert (Irenton, Ohio, USA, small telescope x 90) observed: "Attention directed to mts., saw 2 distinct flashes 1/4s apart that came from edge of those mts. (mts. in dark)." Cameron 1978 catalog weight=3 (average) and ID = 611. ALPO/BAA weight=2.
Observations made with a variable polarizer (akin to a crater extinction device) to measure brighness with red and blue filters. Some variability in brightness noted. With the Kodak Wratten 25 and 38A filters there was little or no increase in contrast with the red filter, but with the blue filter there was a great increase in contrast of the brighter areas of the crater - the crater floor and patches of lighter material, especially at the north end. The remaining areas were supressed with the Blue 38A. ALPO/BAA weight=3.
On 1981 Mar 28 at 01:45-02:45UT M. Mobberley (Suffolk, UK, using a 14" reflector) noted that Aristarchus was very bright, but everything else was normal. The Cameron 2006 catalog extension ID=127 and the weight=3. ALPO/BAA weight=1.
Copernicus 1939 Jul 09 UT 05:00 Observed by Haas? (NM?, USA, 12" reflector?) "Dark area at foot of N. inner wall was I=1.8. Comp. with I=4.8 on 9/6/39 (see #460)" NASA catalog weight=4 (high). NASA catalog ID #451.
Copernicus 1939 Sep 06 UTC 06:00 Observed by Haas? (New Mexico?, 12" reflector) "Dark area at foot of N. inner wall had I=4.8 comp. with I= 1.8 in #451. (same phase so a real difference)." NASA catalog weight=4 (good). NASA catalog ID #460.
UT 08:30 or UT 20:30? SW inner wall of Aristarchus was intesnsity I=0.5, but was I=2.5 on July 2 at Col. 195. Observing conditions were identical. Band is darkening near col. 180. (Observation made in daylight?). Cameron 1978 NASA catalog ID=425 and weight=4 (very experienced observer). ALPO/BAA weight=1.
Riccioli 1937 Sep 29 UT 09:10 Observed by Haas (Alliance, OH USA, 12?" reflector) "Vivid deep purple (Deep purple color on the previous day), but on July 2, 1937 at col. 195deg it was gray tinged with brownish purple. Obs. conditions similar on all." NASA catalog weight=4. NASA catalog ID #426. ALPO/BAA weight=3.
Tycho 1991 Sep 02 UT 07:34-08:40 Observed by Darling (Sun Praire, WI, USA, 12.5" f/5 Newtonian, 159-248x with red and green filters) "Central peak appeared initially star-like with occasional glimpses of a nebulous patch. At 07:54 an arch of light seen inside the crater. Various starlike or blurriness states seen to the central peak. The luminescence seen was brighter in the red filter than in the blue." An ALPO report - for further details see: http://www.ltpresearch.org/ltpreports/ltp19910902.htm
Aristarchus 1973 Aug 22 UT 00:22-00:23 Observed by Germann (Observer at 47.3N, 8.9E, 200mm reflector, S=2, T=2) "Well Observed bright point disappeared within a minute". - Hilbrecht and Kuveler, Earth, Moon & Planets, 30 (1984), p53-61
Riccioli 1937 Sep 29 UT 09:10 Observed by Haas (Alliance, OH USA, 12?" reflector) "Vivid deep purple (Deep purple color on the previous day), but on July 2, 1937 at col. 195deg it was gray tinged with brownish purple. Pbs. conditions similar on all." NASA catalog weight=4 (high). NASA catalog ID #426. ALPO/BAA weight=3.
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.
Aristarchus 1787 Oct 07 UT 03:00? Observed by Schroter (Lileinthal, Germany). Cameron 1978 catalog weight=1 (very low). Cameron 1978 catalog ID=36. ALPO/BAA catalog weight=1.
On 1788 Aug 27 at UT00:00 Schroter (Lillienthal, Germany) reported a TLP. The Cameron 1978 catalog does not give the geographical location of the TLP. The Cameron catalog ID=49 and the weight=1. the ALPO/BAA weight=1.
On 1983 Feb 08 at 06:30UT Toricelli B was observed by P.W. Foley (Kent, UK, 12" reflector) to be visible in Earthshine as a luminous patch. This was rather odd because it is only a small crater and not normally bright. The Cameron 2006 catalog extension ID=201 and the weight=2. The ALPO/BAA weight=2.
In 1824 Oct 18 at UT 05:00 Gruihuisen (Munich, Germany) observe near Aristarchus a mingling of all kinds of colours in small spots North west of the crater. Cameron suggest the wrong date and suggests seeing her TLP ID No, 121). The Cameron 1978 catalog ID=101 and the weight=4. The ALPO/BAA weight=3.