Gassendi 1940 Jul 22 UT 05:00 Observed by Haas (NM?, USA, 12" reflector?) "Largest bright spot in SE part of floor had I=8.6, but 6+ on other dates. (see #472, 474 & 475). (8.6 is normal?)" NASA catalog weight=4. NASA catalog ID #469. ALPO/BAA weight=3.
On 1969 Nov 12/13 at UT23:30-01:30 Celis et al. (Valparaiso, Chile) - one observer saw Aristarchus with bluish scintillations occuring in an irregular way - Apollo 12 watch. The Cameron 1978 catalog ID=1207 and weight=1. The ALPO/BAA weight=1.
On 1880 Nov 06 at UT 20:00 an unknown observer observed a TLP at an unknown location on the Moon. The Cameron catalog has an entry for this date and time but does not specify the location, the observer or what was seen. The Cameron 1978 catalog ID=218 and the weight=0. The ALPO/BAA weight=1.
On 1981 Jun 07 at UT02:30-03:00 B. Hobdell (St Petersberg, FL, USA, 10" and 4" reflectors, seeing=I) at 02:30UT saw a flash from Aristarchus and another one from Schroter's valley. By 02:45UT Aristarchus was starting to be difficult to see and had occasionally a bluish cast. By 03:00UT the crater could only barely be seen. This was odd because visibility on the Earthlit side was really rather good. The Cameron 2006 catalog ID=143 and weight=0. The ALPO/BAA weight=1.
On 1981 Jun 07 at UT02:30-03:00 B. Hobdell (St Peterberg, FL, USA, 10 and 4" reflectors, seeing=1) saw Copernicus to be very bright in blue. Clarty of Earthsine was exceptional tonight. The Cameron 2006 catalog ID=143 and weight=0. The ALPO/BAA weight=1.
North shore of Mare Crisium 1915 Dec 11 UT 06:00? Observed by Thomas (Glenorchy, Tasmania) "star-like pt. on N. shore of mare. (Eimmart?) Particularly bright spot. Tho't it was sunlight from rim of sm. crater." NASA catalog weight=0 NASA catalog ID #358. ALPO/BAA weight=1.
On 2005 Jan 15 at UT 01:25 R. Spellman (Los Angeles, CA, USA, 8" reflector) observed 4 bright points of light on the crater Mutus F? - see Rukl Atlas page 175, chart 74. If his identification of the crater was correct then he could see no structures in the crater that would yield this effect. It could well be that the 4 bright points are just 4 high peaks on the rim catching the first rays of the Sun. The ALPO/BAA weight=1.
On 1969 Nov 11/12 at UT23:30-01:00 Mitchell, Celis and Marti (Paso Hondo, Chile, 10" refractor, x96, 4" refractor, x80, 3" refractor, x60, seeing = excellent) observed Aristarchus with a blue centre and irregular form, alternating with normal aspects. Some opacity (independent confirmation?) - Apollo 12 watch. The Cameron 1978 catalog ID=1208 and weight=3. The ALPO/BAA weight=3.
On 1981 Jun 08 at UT01:48-02:45 B. Hobdell (St Petersberg, FL, USA, 10 and 4" reflectors) could hardly see Aristarchus crater, however at 01:48UT it brightened in blue for about 3 minutes. Then at 02:20UT there was a bright flash, and by 02:25UT the crater was very bright, but by 02:45UT it was no longer visible. Cameron 2006 catalog ID=144 and weight=0. The ALPO/BAA weight=1.
On 1988 Nov 14 at UT 17:25-18:30 H. Miles (St. Minver, Cornwall, England, UK, 5"refractor? x60 and x120) found Aristarchus to be a white ill-defined circular patch. At 17:45UT it was a lot brighter (Cameron comments that this might have something to do with sky darkness). In contrast, Copernicus was just seen as a white patch and the Jura mountains could be seen (not as bright). Aristarchus grew brighter over time and there was a bright point on the west wall (seen at x60 and x120). Īt was fainter at 1854 & < At 1830. (Foley) said Earthshine cond. Superb with many regions clearly seen, but Aris. was dull. (Cooks) in hazy condition could not detect Aris." The Cameron 2006 catalog ID=338 and weight=0. The ALPO weight=1.
In 1879 Oct 20 UT 23:00 (Local time Oct 21 9AM) Hirst (Blue Mountains, NSW, Australia) saw a large part of the Moon covered with a dark shadow that was as dark as the Earth's shadow would have been if there had been an eclipse. Cameron says that this is a confirmed observation. Note that the Moon was just before first quarter. The Cameron 1978 catalog ID=215 and the weight=4. The ALPO/BAA weight=3.
On 1980 Apr 20 at UT 19:25-23:43 P.W. Foley (Kent, UK, 10" reflector, seeing II-III) found that Aristarchus was very bright in Earthshine (also found on the photographs that he took), giving off a blue "incadescence", the CED brightness reading was 5. Occasionally Foley could see a star-like point in the south east corner. For comparison in brightness he used highland terrain near to Grimaldi (CED=2). By comparison, Buczynski and Lord, could not see Aristarchus. Earlier, Geenwood saw the crater easily as a star-like point with a diffuse exterior glow. Cameron says thyat this was confirmed by Buczynski and Lord (?). At 20:35UT Amery decided that Aristarchus looked brighter than normal. Pedler though described the crater as "small dim nebulous blue or blue-green" that was invisible by 20:27UT. At 20:28-22:01 Blair could not detect Aristarchus, nor could J-H Robinson at 20:40UT though he did see it at 20:55UT as both diffuse and blue. Ricketts detected a blow glow with irregularly spaced flashes of roughly 5-10 sec apart. Cook's at Frimley, UK, saw no features in Earthshine. Cameron 2006 catalog ID=88 and weight=4. ALPO/BAA weight=2.
On 1969 Nov 15 at UT 02:20-03:20 Lagunas (Santiago, Chile, 10" reflector) observed some brightenings in Aristarchus during the Apollo 12 watch. The Cameron 1978 catalog ID=1209 and weight=0. The ALPO/BAA weight=1.
On 1980 Apr 20 at UT 19:45-22:45 M.C.Cook (Frimley, UK) - colour (probably spurious) seen on Piccolomini. Cameron 2006 catalog ID=88 and weight=4. ALPO/BAA weight=1.
On 1980 Apr 20 at UT20:05-21:02 J.D. Cook (Frimley, UK, 12" reflector, x60, seeing III-IV) at the start of this session found some bright spots in the area of Copernicus, and at 21:02 detected some flashes in this region. Cameron 2006 catalog ID=88 and weight=1. ALPO/BAA weight=1.
On 1980 Apr 20 at UT20:27 M.Price (Camberley, UK) saw a flash in the Grimaldi-Aristarchus area. Cameron 2006 catalog TLP ID=88 and weight=4. ALPO/BAA weight=2.
White spot near Censorinus 1966 Dec 18 UT 23:40-23:46 Observed by Enie (Pittsburgh, Pennsylvania, USA, 8" reflector x100, S=G) "Attention drawn to pink color in this usually white patch. Brightened to a light reddish tinge for 2 mins, then faded back to pink, then to white, Sketch." NASA catalog weight=4 (high). NASA catalog ID #1002.
Apianus D On 2011 Oct 03 UT 21:00-21:20 F. Power (Meath, Ireland, 11" SCT) observed changing colours (blue, white, and red) on the inner western rim of this crater. He changed eyepieces and moved the scope around to look at dufferent parts of the Moon, but nowhere else exhibited anything similar. As another test he asked his wife to have a look without telling her what he was seeing. She confirmed the same effect. 5 digital camera images had been taken. Most of these were out of focus and the first one was saturated, however one of them showed a approximately 35 km long, by 11 km wide (at the north) lopsided carrot shaped orange colour to the western rim of Apianus D. No similar strong colour could be seen anywhere else on the image, nor on the other 4 images. This TLP is being given an ALPO/BAA weight of 1 as the Moon was low, but an image taken looks interesting.
On 1988 Nov 15 UT 19:15 Holmes (Rockdale, UK, 215mm Newtonian) noticed the Censorinus apron (just east of the crater and including the rim) was fuzzy but the crater was clear - a sketch was provided. A BAA Lunar Section observation.Cameron 2006 Catalog Extension ID=339 and weight=3. 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.
On 1992 Oct 04 at UT 02:15-03:18 D. Louderback (South Bend, WA, USA, 3" refractor, x80) found that Eimmart crater was brighter in blue light than in red light - however Cape Agarum, and Mare Crisium were too. The Cameron 2006 catalog ID=454 and the weight=4. The AlPO/BAA weight=1.
On 1992 Oct 04 at UT 02:15-03:18 D. Louderback (South Bend, WA, USA, 3" refractor, x80) found that Mare Crisium was brighter in blue light than in red light - however Cape Agarum, and Eimmart were too. The Cameron 2006 catalog ID=454 and the weight=4. The AlPO/BAA weight=1.
On 1992 Oct 04 at UT 02:15-03:18 D. Louderback (South Bend, WA, USA, 3" refractor, x80) found that Mons Piton was very bright and was equal to Proclus (brightness of 9) in white light and 7.5 in violet, and 9.3 in red (Proclus was 9.2 in red). Īn blue both features = (9?). "points on Piton affected were B, D, and C (S, W & N resp.) D in violet was fuzzy - ill defined". The Cameron 2006 catalog ID=454 and the weight=4. The AlPO/BAA weight=2.
On 1992 Oct 04 at UT 02:15-03:18 D. Louderback (South Bend, WA, USA, 3" refractor, x80) found that Promontorium Agarum was brighter in blue light than in red light - however Mare Crisium and Eimmart were too. The Cameron 2006 catalog ID=454 and the weight=4. The AlPO/BAA weight=1.
On 1983 Mar 21 at UT 21:05-22:00 P. Horne and J. Horne (Hertz, England, UK, 11" reflector, x180 and x330) found that Mons Piton (totally illuminated and brightest feature on the Moon - but no variability) was brighter than Aristarchus (would have been if it had been in sunlight) and the mountain was contained within a circular illuminated patch. "Brilliant white and no shadow. Size ~16km." There was no details visible but the adjacent features had distinct shadows. Hutton was also observing. Foley examined the photographs and believes that they are inconclusive. D. Mansbridge was photographing the Moon at 19:30UT and detects Piton but it is not bright. However in a photograph taken by D. Mansbrdige and 20:30UT the mountain is much brighter than any other sunward facing slopses on the northern part of the Moon's terminator. R. Mosley had been observing earlier at 18:10-19:40 and although finding the mountain to be shining briliantly beyond the terminator, he also comments that this is normal. Cameron though has seen the photographs taken and thinks it might be a real TLP. The Cameron 2006 catalog ID=208 and weight=5. The ALPO/BAA weight=2.
On 1988 Nov 16 at UT 18:20 M.C. Cook (Frimley, UK) observed that a ray north east of censorinus appeared to be very diffuse and this did not change during the observation. This was odd because proclus ray material remained clear. The apron material of Censorinus was diffuse E-W and the northern part was dull, but not fuzzy. The Cameron 2006 catalog ID=340 and the weight=3. The ALPO/BAA weight=2.
On 1988 Nov 16 at UT 18:20 M.C. Cook (Frimley, UK) observed that Torricelli B changed in brightness (at times), but thinks that this was due to atmospheric transparency. The Cameron 2006 catalog ID=340 and the weight=3. The ALPO/BAA weight=1.
Near Ross D (24E, 11N) 1964 Mar 21 UT 05:00-06:20 Observed by Harris, Crow, Cross (Whittier, CA, USA) - negative confirmation from Las Cruces. NASA catalog weight=0 (unreliable). NASA catalog ID #805. ALPO/BAA weight=1.
On 1984 Apr 08 UT 19:50 Mobberley (14" reflector, x194, seeing III-IV, Transparency Fair-Poor, Cockfield, UK) found that Torricelli B's shadow was 1/2 the way across the floor, which was normal, but that there was a very dar grey/brown shroud around the carter, out to several radii. The ALPO/BAA weight=1.
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.
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 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.
Plato 1789 Jul 30 UTC 21:00? Observed by Schroter (Lilienthal, Germany) NASA Catalog Event #61, NASA Weight=2 (slightly low) Event described as: "Soon after sunrise saw a kind of fermentation on the floor which clearly resembled a kind of twilight, (due to some kind of aberration unknown to the observer?)" For further details see reference: Middlehurst, B.M., Burley, J.M., Moore, P.A. and Welther, B.L., 1968, NASA TR R-277.
Sulpicius Gallus 1867 Jun 10 UT 22:00? Observed by Dawes (England?) "3 distinct roundish black spots. Absent on 13th" NASA catalog weight=3. NASA catalog ID #184. ALPO/BAA weight=1.
On 1969 Nov 18 at UT 00:30-02:30 W. Cameron (Greenbelt, MD, USA, 12" reflector, x80 and x320) using a low power eyepiece, observed that bright craters (but not all of them) "glittered like diamonds". These craters were several on the terminator, Proclus, Censorinus, Manillius, Menelaus and Dionysius. The glitter effect was on the west wall crest -- like stars. Higher power revealed these areas to be bright but not star-like (nor glittering). The Cameron 1978 catalog ID=1212 and the weight=1. The ALPO/BAA weight=1.
Eratosthenes 1976 Aug 04 UTC 02:07 Observed by Bartlett (Baltimore, MD, USA, S=6, T=3, 4.5" reflector 40-450x) "faint spot of light 4 deg bright seen in shadow on pos. of c.p. which is normally invis. At base of inner NW wall a faint bluish radiance (gas?) was observed". NASA catalog weight=4 (high). NASA catalog ID #1439.
Piton 2004 Jan 30 UT 15:52 Observed by a GLR observer (Italy) "CCD image shows a point of light in the NW shadow - possibly highland starting to emerge from the shadow?" A GLR report.
Eratosthenes 1952 Nov 25 UT 16:30 A.P. Lenham (Swindon, UK, 3- inch refractor x150, Definition Good) noted that there was faint/slightly bright detail inside the interior shadow - observer comments "presumably peaks of central mountains & W. Wall ridge, but very faint" - however this is worth checking out. ALPO/BAA weight=1.
Alphonsus 1952 Nov 25 UT 17:15 A.P. Lenham (Swindon, UK, 3- inch refractor) noted that the usual dark spots were not visible. 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 2009 Nov 25 UT18:42-21:03 P.Abel, T.Little and C.North (Selsey, UK, 15" reflector, seeing II-III, transparency very good), all saw visually a brownish tinge on the north west rim of Eratosthenes crater. P.Abel made a sketch and T.Little took some high resolution CCD images, some of which were through coloured filters. Checks were made for spurious colour, but none was seen elsewhere on the Moon. The eyepiece was changed but this made no difference. M.C.Cook (Mundesley) was observing with a smaller scope at the same time, but saw no colour, however observing conditions were worse. W.Leatherbarrow (Sheffield, UK) was observing with a instrumenet mid way in size, and saw a brownish tinge in the NW rim area, but saw a similar colour elsewhere and put this down to spurious colour. Normally multiple observers seeing the same thing would result in a weight of 4, however as this was only observers at Selsey and some of the evidence contradicts, I am allocating an ALPO/BAA weight=3.
Pallas-Schroter 1953 Nov 13 UTC 02:00 Observed by L.Stuart (USA) "Saw and photographed a bright spot on term. between these two craters. Used Kodak 103aF3." NASA catalog weight=5 and catalog ID #559. ALPO/BAA weight=5.
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.
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.
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: 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.
Plato 1970 Dec 07/08 UT 23:30-00:45 UT Observed by Fitton (Oldham, England, 8.5" refkector, x200, S=G) "Floor blank, yet some craters should be vis. Outer wall craters showed clearly. (similar to Bartlett's obs on Nov. 8th, #1278" NASA catalog weight=3 (average). NASA catalog ID #1279.
Aristillus 1939 Jul 26 UT 02:30 Observed by Haas? (NM?, USA, 12?" reflector) "Dark area to W. part of floor was I=3.7. (see #450, 459 & 461). Used diff. telescopes but can not explain difference)" NASA catalog weight=4 (good). NASA catalog ID #454.
On 1936 Oct 25 at 01:35 UT W. Haas (Alliance, OH, USA, 12" reflector) saw small bright spots on the floor of Eratosthenes, (Pickering's atlas 9A, col. 30deg, shows no spots - according to Cameron). Cameron 1978 catalog TLP=417 and weight=4. ALPO/BAA weight=1.
Copernicus 1966 Mar 01-02 UT 22:06-09:45 Observed by Lovell (Auburn, OH, 4" refractor, x120m S=E, T=3.5) "As sun rose higher, west (ast.?) outer wall was bathed in a soft viol. color -- not in evidence on flat ground below the wall" NASA catalog weight=3, NASA catalog ID #922.
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.
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.
Daniell 1979 Jun 05 UT 20:15-21:10 Observed by Price (Camberley, England, 152mm reflector x64 and x128, seeing III, transparency good) "Obscuration seen" BAA Lunar Section report.
Daniell 1979 Jun 05 UT 20:15-23:00 Observed by Price (Camberley, England, 152mm reflector x64 and x128, seeing III, transparency good) observed that Posidonius lacked sharpness.
U.K. observers: G. North and P. Foley, both saw a wisp of blue associated with this crater. Cameron 2006 catalog extension ID=209 and weight=4. ALPO/BAA weight=3.
Ramsden 1999 May 25 UT 20:57-21:22 Observed by Brook (Plymouth, UK, 4" refractor, x216, seeing II-III) "Bright spot on W wall - brightness variation seen. - At the start it was bright, then it faded, and towards the end of the observation it was starting to brighten again". BAA Lunar Section observation. ALPO/BAA weight=1.
On 2011 Oct 07 UT 21:45 Gassendi observed by P. Grego (St Dennis, UK,300m Newtonian, x150, seeing III, intermittent cloud) - whilst producing some sketches of the crater - observer noticed a faint point of light inside the shadow filled interior, two thirds of the way out from where the central peaks should have been, towards the SE rim. Some uncertainty in being sure about this spot and after interuption by cloud it was not seen later that evening. ALPO/BAA weight=1 to refelct uncertainty of observer.
Bullialdus 1979 Jun 05 UT 22:00-23:00 Observed by Cook M.C. and J.D. (Frimley, UK, 12-inch reflector, Seeing III-IV, good transparency). MC Cook observed internittently over this time period (due to cloud) and found the crater sharper in a blue filter than in a red filter. No obscuration seen apart from a darkish patch on the SW rim and spreading over onto an area surrounding the rim, which she took to be shadow, though the main shadow was along the east rim of the crater. JD. Cook observed an orange colouration seen on eastern and the cleft on the SW rim. Dark area seen on southern floor of crater, south of central peak. ALPO/BAA weight=1.
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.
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 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
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.
M. Cook of Frimley, UK, noticed Torricelli B to have a blue tinge inside and outside. No colour had been noticed earlier on 19-21 Mar. Cameron reports also in her catalog that the halo around Torricelli B had lost its brilliance as seen on 29th Mar. Cameron 2006 catalog extension ID=210 and weight=5 - apparently being confirmed by Marshall, Mobberley and Foley. ALPO/BAA weight=3.
M. Cook of Frimley, UK observed a brightening of the crater during this observing session. The cameron 2006 extended catalog ID=346 and weight=3. ALPO/BAA weight=2.
Torricelli B 2005 Jan 22 UT 01:00 Observed by Serio (Houston, TX, USA, 6" Cassegrain, x150 and x180, Seeing 3, high deck of Cirrus clouds) "Torricelli B hard to make out in the videos taken, but images taken through cloud. A check on the image received by the coordinator shows that Torricelli B is in fact visible, but perhaps not very bright. A later observational sequence of images by Raul Salvo (Montevideo, Uraguay UT 03:15-03:23) showed similarly that Torricelli B was dark, and there was some brightness variability although the background setting on these was low" An ALPO report.
Gassendi 1967 Mar 22 UTC 19:39-19:43 Observed by Mosely (Armagh, N. Ireland, 10" refractor, x360) "Red color & blink strongly suspected in small area centred on junction of 3 clefts 1/2 way from c.p. & ESE wall. Well-defined & did not note change during obs. period. Clouds terminated obs. till 2120 when it was not seen." NASA catalog weight=3 (average). NASA catalog ID #1018.
At 03:30UT observer noticed a hint of yellow colour on the floor of the crater and by 03:57UT the south east and central parts of the floor and the circular feature on the south west floor had turned a deep yellow colour. The rest of the crater remained colourless. Other craters also remained colourless. By 04:05UT the colour was fading and by 04:15UT it was gone. Maurice Collins in New Zealand took some low resolution colour images about 4 hours later but these failed to show any yellow colour. Zac Pujic obtained colour images at a different time of natural surface colour on the Moon and finds that Bullialdus does actually have a natural yellow cast to most of the floor. However this does not explain the variability in colour strength seen by Robin Gray. ALPO/BAA weight=3.
G. Ward (a lunar observer for 15 years) observed an area just south west of Mersenius C to be blurred and in a greenish cloud. The green colour was more like that of dead grass than one gets from a neon bulb. The effect was seen from 04:50-04:57UT, but could have been going on before it was first noted at 04:50-UT. Seeing was 6-7/10 4" Refractor (2 element). refractor had been used hundreds of hours before (over a 10 year period) with no similar colour was seen. The observer checked other areas but did not see any similar effects. They also rotated and changed eyepieces, but this made no difference to the TLP. The TLP site seen was picked up on an image taken earlier at 04:47UT by W. Bailley, from Sewell, NJ, USA. Unfortunately the area concerned, a mountain on the image, was saturated and so we cannot tell if a colour was present there and the seeing was poor.
Observed by Firsoff (Somerset, England, 6.5" reflector? x240) "Red glow." NASA catalog weight=4 (high). NASA catalog ID #573.
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 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.
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.
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.
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.
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
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.
On 1965 May 12 at UT 19:10 E. Penzel (Rodewisch, East Germany) was taking a sequence of images during the impact of the Soviet Lunik 5. He detected a tens of km scale elongated cloud after the impact over a duration of 9.5 minutes. However there are differences between the images elsewhere on the Moon, possibly due to different exposures or some other effects and it is not 100% sure that what he detected was impact debris/cloud?. The ALPO/BAA weight=3.
Johnson, of Des Moines, Iowa, USA, using a 7" reflector and an 8" refractor, saw a bight streak. The observer looked later, but it was no longer visible. Cameron thinks that it might have been a reflection from the wall. Cameron 1978 catalog ID=423 and weight=1. ALPO/BAA weight=1.
D. Darling of (Sun Praire, WI, USA, using a 12.5" reflector at x150, noticed a hint of red? colour on the south west rim of Aristarchus. Brightness measurements were normal for Aristarchus and Herodotus. No colour seen elsewhere e.g. Prom. LaPlace. The colour on Aristarchus had gone by 01:15UT. Cameron 2006 catalog extension ID=414 and weight=3. ALPO/BAA weight=3.
A fleeting faint reddish patch was seen in Gassendi at 21:15UT. This observation has an ALPO/BAA weight of 2.
Rays of(?) (in?) Herodotus 1955 Oct 28 UTC 18:30 Observed by Kozyrev (Crimea, Russia, 50" reflector, spectragraph) "Spectrum 3934A (K of Ca). 3964 (H of Ca) change in luminosity. 13% in H, 19% in K, 2% in H, 3% in K. in photo-line-depth method" NASA catalog weight=5 (very high). NASA catalog ID #622. ALPO/BAA weight=5.
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.
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.
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.
1954 Aug 11 observed by Firsoff (Somerset, UK, 6.5" reflector, x200) "Brilliant in red filter, variable)" NASA catalog weight=4. NASA catalog ID #570. ALPO/BAA weight=3.
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.
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.
Manilius 1939 Jul 30 UT 06:00 Observed by Haas? (NM?, USA, 12?" reflector) "Dark area in S. part wad I=3.7 comp. with #449. Cond. were similar. (phase same. real difference?). (normal here?)"
Plato 1971 Nov 01 UT 19:35-20:35 Observed by Kidd (S.Shields, England, 16" reflector, S=G), Kirsopp (England), Fitton (Lancashire, England, 8" reflector x200) "NW (IAU?) rim, small area of obscur. & bright spot adjacent to it. Was normal at 2035h. Kirsopp confirmed. Fitton saw nothing unusual in blink patrol. (blink device detects color rather than brightness)" NASA catalog weight=4 (high). NASA catalog ID #1318.
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.
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.
On 1897 Oct 10 at UT 19:00 Pickering (Cambridge, Mass. USA, 15" refractor?) observed in Shroter's valley and the vicinity, "Variations in vapor col. change in direction of cloud rising from F is marked (time est. fr. given colon.)" The Cameron 1978 catalog ID=292 and the weight=3. The ALPO/BAA weight=2.
Near Censorinus 1964 Apr 26 UT 20:00? Observed by Hopmann (Czchoslovakia?) "Surface brightening somewhat similar to Kopal and Rackham in #779" NASA catalog weight=3 (average). NASA catalog ID #810.
Archimedes 1940 Aug 18 UT 03:25 Observed by Haas (NM?, USA, 12" reflector?) NE outer wall had I=5.0, but was I=2.5 on June 20 (see #467) (similar colong.)" NASA catalog weight=4. NASA catalog ID #471. ALPO/BAA weight=2.
Proclus 1958 Aug 30 UT 06:30-06:45 Observed by Bartlett (Baltimore, MD, USA, 4" reflector, x240, S=6, T=5) "Proc. Q. a bright spot on NE rim apparently a crater presented a very abnormal aspect. Extraordinarily large & at least 9 deg bright -- like EWBS on Aris. This spot is subject to large unexplained variations. At 97 deg col. in July, Q was also 9 deg bright but very small. At col.96 deg, 5 in May '58, col.99deg in Feb.'50, & 96 deg in Nov. '55 it was not seen at all. Assoc. with tonite was a distinct blue glare on NE rim, extending for short dist. & @ 2x as far as S." NASA catalog weight=4 (high). NASA catalog ID #894.
On 1983 Jan 29/30 at UT20:35-01:00 Sykes (UK?) observed that Linne appeared to brighten for approximately 20 min and had the appearance of a point (confirmed). This observation was made during a major Torricelli B TLP. The Cameron 2006 catalog ID=198 and the weight=5. The ALPO/BAA weight=2.
Torricelli B 1983 Jan 29/30 UTC 20:35-02:30 Observed by Foley (12" reflector, seeing Antoniadi II, Transparency=good, no spurious colour seen), Moberley (14" reflector, seeing Antoniadi II, transparency excellent, spurious colour strong), Cook, J & M (12" reflector, seeing Antoniadi II-III, transparency moderate). All observers based in southern England. "Initially crater brightest feature on the Moon, then it faded. Strong colour also seen by all observers e.g. green-blue to violet. Report of observations written up in JBAA Vol 100, No. 3, p117 123, (2000) - probably one of the best reorted TLP". The Cameron 2006 catalog ID=198 and weight=5. The ALPO/BAA weight=5.
Proclus 1972 Nov 21 UT 21:30 Observed by Farrant (Cambridge, England, 8.5" reflector, x130) "Thickened bright ring remained, but the dark patch had disappeared. (dark patch prob. real temporary phenom. as it was seen nr. FM when contrasts are strongest, yet disappeared" NASA catalog weight=1 (very low). NASA catalog ID #1351.
On 1983 Jan 29 at UT22:09 M.Mobberley (Sulfolk, UK, 14" reflector) noted that Arago B had a slight tinge of violet colour, and was a lot less (bright?) than Torricelli B's blueness. Other craters checked but were not showing any blue colour. The Cameron 2006 catalog ID=198 and weight=5. The ALPO/BAA weight=3.
On 1983 Jan 29 at UT22:09 M. Mobberley (Suffolk, UK), found that Moltke crater was "exceptionally bright". Other craters (apart from Arago B Torricelli B etc) appeared normal. The Cameron 2006 catalog ID=198 and the weight=5. The ALPO/BAA weight=2.