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.
Copernicus 1975 Jul 24 UT 22:52 Observed by Robinson (Teignmouth, England, 10" ? reflector or 4" refractor?) "Copernicus indistinct in red and blue filters" NASA catalog weight=3 (average). NASA catalog ID #1409.
Fracastorius 1975 Jul 24 UT 22:52 Observed by Robinson (Teignmouth, England, 10" ? reflector or 4" refractor?) "Fracastorius had a blink (red or blue?)" NASA catalog weight=3 (average). NASA catalog ID #1409.
Tycho 1975 Jul 24 UT 22:52 Observed by Robinson (Teignmouth, England, 10" ? reflector or 4" refractor?) "Tycho indistinct in red and blue filters" NASA catalog weight=3 (average). NASA catalog ID #1409.
On 1996 Jul 31 at 22:40UT P. Moore (Selsey, UK, 15" reflector, x300) noticed a lack of detail in the Cape Agarum area - he would normally have expected to have seen some craterlets. However he would not rate this observation much because the seeing was only III and he does not think that it was an obscuration. However just in case he wanted to record this report in the archives. ALPO/BAA weight=1.
Aristarchus 1954 Nov 12 UTC 02:20-03:05 Observed by Bartlett (Baltimore, MD, USA, S=5-6, T=3-4) "Blue-violet glare on EWBS & whole length of E. wall. Suspected viol. tint on VA; uncertain @ m" NASA catalog weight=4. This had faded later by 05:07. NASA catalog ID #582. ALPO/BAA weight=2.
Alphazen Alpha 1972 Oct 23 UT 22:10?-22:13? (Stoke-on-Trent, UK, 21cm Newtonian, x217, seeing very good). Flickering colours seen on the north field of Alhazen Alpha mountain. Above UTs estimated by the observer, but the duration of the effect was 3 minutes. Colouration centred on the hills that run north to south between Mare Anguis and Mare Crisium. The colour alternated from east to west about 2 or 3 times per second. The colour was not apparent to the north or south, or indeed on any other features. Telescope field of view moved, but effect stayed in the same place on the Moon. Moon't terminator scanned for 15 minutes afterwards, but the effect did not recur. The colour seen was mostly red, with a band of orange, and a strip of yellow nearest the hills, the proportions being 6:2:1. The bands seemed to arc up steep above the Moon's surface and flatten out over the mare surface either side of the hill features. No filters were used in the observation. Observer suspects some kind of diffraction spectrum to explain the larger dispersion in the red end of the spectrum. ALPO/BAA weight=3.
Schroter's Valley: Cobra Head 1824 Nov 08 UTC 00:00? Observed by Gruithuisen (Munich, Germany) "Mingling of all colors in small spots. Described a violet glimmer near Cobra Head & plateau that spreads; starts just after sunrise. Cameron 1978 catalog weight=4 and catalog ID=103. The ALPO/BAA catalog weight=3.
Plato 1870 Mar 19 UT 00:00? Observed by Gledhill? (halifax, England, 9" refractor) "Same group (of craters) as in Feb. illuminated. (if phase same as Apr. 1970 then date is Mar 19" NASA catalog weight=2 (low). NASA catalog ID #165.
On 2006 Jan 16 at 05:44UT T. Bakowski (Orchard Park, NY, USA) observed a round dark object in 1 of 21 frames from a camera. The exposure was 1/250th sec. Seeing conditions were bad. The dark spot is east of Mons Vinogradov, at or near crater J. ALPO/BAA weight=1.
Schickard 1939 Aug 02 UT 00:01 Observed by Moore (England, 12?" reflector) "Floor milky, walls almost vis. 2 bright pts. in area. not extending to extreme w.part of floor" NASA catalog ID #456. NASA catalog weight=4. ALPO/BAA weight=3.
Aristarchus 1968 Dec 07 UT 07:00? observed by Corralitos Observatory (Organ Pass, NM, USA, 24" reflector+Moon Blink) "Bluing around 3 craters, strongest at Aris. Lasted several days. Photos show 30% more intensity in blue filter than in red or neutral. Moon's declination northerly. Obs. think it was due to atm. effects" NASA catalog weight=5 (very high). NASA catalog ID #1105.
On 1968 Dec 07 at UT 07:00? Corralitos Observatory (Organ Pass, NM, USA, 24" reflector and Moon Blink device) observed a bluing around three craters, one of which was Kepler. This effect lasted several days. Photographs were taken that show30% more intensity in the blue filter than in red or neutral. The Moon's decination was northerly. The observers suspect that it was an atmospheric efect and not a TLP. The Cameron 1978 catalog ID=1105 and the weight=5. The ALPO/BAA weight=3.
Gassendi 1940 Jul 22 UT 05:00 Observed by Haas (NM?, USA, 12" reflector?) "Largest bright spot in SE part of floor had I=8.6, but 6+ on other dates. (see #472, 474 & 475). (8.6 is normal?)" NASA catalog weight=4. NASA catalog ID #469. ALPO/BAA weight=3.
Proclus 1956 Jul 25 UTC 06:16-06:33 Observed by Bartlett (Baltimore, MD, USA, 5" reflector, x180, S=3-5, T=4) "C.p. distinctly vis. within floor shadeo, est. 5 deg bright but no trace of it at col. 122.37deg in Oct, '55(Oct. 4?)." NASA catalog weight=4 (good). NASA catalog ID #645. ALPO/BAA weight=2.
Cleomedes Alpha 1993 Sep 03 UT2200-22:20 G. North (UK, 18.25" reflector, x86 & x144) observed it to be a strikingly brilliant 'splodge' seen in the mostly shadow filled interior of Cleomedes, and around this splodge was a faint halo extending symetrically in an eastwards direction. The splodge was the mountain Cleomedes Alpha. Strangely no shadow from the mountain was seen to be cast onto the halo on the east. Observer alerted other observers by phone, and upon returning to the scope found that the splodge had faded in brightness and continued to fade over the next hour as one would expect from a mountain at sunset. Some heavy spurious colour was present. J. Cook & M. Cook (Frimley, UK) observed at 22:20-22:25 and found the bright splodge, but no halo. M. Cook re-observed later and confirmed normal fading of splodge. Roscoe observed from 00:30UT next day, but by that time Cleomedes Alpha had set and was no longer visible in the shadow filled floor. S. Beaumont had observed earlier at 20:00 but had recorded all as normal in Cleomedes. The Cameron 2006 catalog ID=466 and weight=5. The ALPO/BAA weight=2.
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.
Aristarchus 1969 Nov 27 UT 20:00? Observed by Miles (coventry, England, 5" refractor, x120) "Strong pink color in N. part; spectacular strong blink. Did not notice obscur. Bands were vis." NASA catalog weight=4 (high). NASA catalog ID #1227.
Pico 1976 Aug 13/14 20:50-01:00, 03:15 Observed by Foley? or Findlay? (England, S=E) "Dark line to the E. (IAU?) of Pico obs. & persisted till 0100h. On 14th the whole area around Pico was gray & diffused. At 0315h detail reappeared & NW corner sparkled. Small brilliant spot appeared due N. of it & the albdeo exceeded Aristarchus (=9+ ?)" NASA catalog weight=3 (average). NASA catalog ID #1443.
On 1955 Oct 04 UT 22:00 Dubois and Kozyrev (Crimea, Soviet Union, 50" reflector) observed the following in Aristarchus crater: "Low disprsion (d=.13 whereas on Oct 28 & Nov d=0.03) Spectogram showing emiss. in central part nr. H&K". Cameron says that this is a confirmation of the previous Bartlett TLP? The Cameron 1978 catalog ID= 619 and weight=5. The ALPO/BAA weight=5.
1936 Oct 04 UT07:42 W.Haas drew bands, many smaller spots on floor. Pickering's atlas 9D col 141 shows bands but no bright spots. Haas' location Aliance, OH, USA. Reference: Haas, W. J.Royal Astr. Soc. Canada. Cameron 1978 catalog ID=416 and weight=3. ALPO/BAA weight=2.
Aristillus 1939 Jul 06 UT 05:00 Observed by Haas? (NM?, USA, 12" reflector?) "Dark area in W. part of floor was I=1.3 but other dates were brighter. or same. yet cond. similar (see #454, 459 & 461)" NASA catalog weight=4 (good). NASA catalog ID #450.
Fracastorius 1975 Jul 27 UT 22:45 Observed by Robinson (Teignmouth, England) "Blink seen. Floor brighter in red than in blue. Suspects colour is spurious". NASA catalog weight=1 (very low). NASA catalog ID #1410.
Plato 1975 Jul 27 UT 22:45 Observed by Robinson (Teignmouth, England) "Blink seen. Floors brighter in red than in blue". NASA catalog weight= 1 (very low). NASA catalog ID #1410.
Theophilus 1975 Jul 27 UT 22:45 Observed by Robinson (Teignmouth, England) "Blink seen. Floor brighter in red than in blue". NASA catalog weight=1 (very low). NASa catalog ID #1410.
On 1979 Jul 14 at UT 00:24-01:10 P. Madej (Huddersfield, UK, 15cm reflector, x35, x52, x73 and x110, seeing IV-V, transparency very good). Note that the observing date was also written as Jul 18th in the original report? Puiseaux was very clear in white light, but could not see the cenrtral peak. The central peak though was visible through a Waretten 15 (yellow) filter. The ALPO/BAA weight=1.
Messier A 1951 Oct 20 UT 00:00? Observed by Moore (England) "Brilliant white circular patch in it. has seen it & Messier blurred several times." NASA catalog weight=4 (good). NASA catalog ID #545 Note that the date and time given are probably wrong as the Sun is ~7deg below the local horizon at this time. ALPO/BAA weight=1 to reflect this error.
Aristarchus 1956 Jul 28 UT 05:20-05:55 Observed by Bartlett (Baltimore, MD, USA, 5" reflector, x180, S=5, T=4) "Vivid blue- viol. gl. on c.p., band across E. floor, & EWBS, E. & NE wall". N.B. The effect had vanished by 07:20UT. NASA catalog weight=4. NASA catalog ID 646. The ALPO/BAA weight=2.
On 1975 Jul 29 at UT 00:00 Fraser (England, 6" reflector, x70) and Howick (England, 3.5" reflector) observed the occultation of 51 Pisc. at emersion - Fraser saw a flash or spike of liht which proceeded emersion of primary by 0.4sec. The 9.0 mag companion appeared some moments later. Howick at 1 km away, with 3.5" reflector noted nothing unusual. Cameron says that no 3rd companion is known. The Cameron 1978 catalog ID=1411 and weight=2. The ALPO/BAA weight=1.
Aristarchus 1976 Aug 15 UT 23:00-23:45 Observed by Garbott (2) (Bedfordshire, England, 10" reflector x500, seeing Antoniadi I) and by Moore (Sussex, England, 15" reflector, x360, seeing Antoniadi IV) "Noted blue color on N. wall extending toward Herod. Also saw orange color in S. region. Confirmed by father. (similar to many of Bartlett's rept's.), More noted nothing unusual at 2320h." NASA catalog weight=4. NASA catalog ID #1444. ALPO/BAA weight=2.
On 2009 Oct 09 UT11:00-11:04 NASA's LCROSS upper centaur stage, followed 4 min later by the observation spacecraft, is due to impact into a the crater Cabeus in the hope of kicking up some dust and possible frozen volatiles. Note that this description is intended for observers on the date of impact and it is doubtful that any new science could be achieved by re-observing the same area months after the impact. If you are observing on the date of impact, then please observe around 11:00-11:04UT and ignore the predicted times in the headings. However this report is included as techniqcally if something is seen it is a TLP, albeit man-made! For those observing on the date in question here are a few observing tips to maximize the science of your observations: (1) If you are imaging, then please try to obtain images before the impact because you can then subtract these from images taken during the impact and hence show up faint changes that you might normally miss. (2) If you have a spare scope and camera,use this to observe through filters such as UBVR or I, or if you have narrow band interference filters, try observing in say Hydrogen Alpha, Methane, OH, or indeed any volatile that you might expect to see in a comet (the main source of water at the poles). (3) Please try checking the area long after the impact, just in case other effects might trigger a TLP. (4) Please go to some trouble to ensure accurate timings- these will be essential in order to understand the sequence of events - assuming any are seen. Timings can be obtained using a short wave radio or via a GPS. Note that you should always use UT or UTC. (5) Please send any observations that you make into the upload section of the LCROSS campaign observers web site. If you belong to an astronomical society e.g. BAA or ALPO, then do please send copies of your observations to the Lunar Sections of your society or club. (6) Finally this desription will be updated a day or two after the planned impact.
Aristarchus 1974 Sep 08 UT 04:45-06:30 Observed by Cowan and Johnson (Dublin, TX, 8" reflector, x59, x152, S=7) "Saw a bright luminous, blue, misty cloud on th NE rim. Obscur. for 1st hr. then gave way to pink & features became vis. Cloud was tear-drop shape. No movement to glow. Pink cloud glowed too. Very tenuous by 0130h. (Nakamura says there were no seismic events within several hrs. of this time). Another person saw it without being advised as the where it was." NASA catalog weight=5. NASA catalog ID #1393. ALPO/BAA weight=4.
On 1878 Oct 18 at UT 21:00? Gaudibert (France?, 4"refractor) observed Webb's white spot on SW border of Wargentin to be brilliant, however this had vanished by Oct 19. The Cameron 1978 catalog ID=204 and the weight=4. The ALPO/BAA weight=3.
Tycho 2006 Jan 22 UT 06:34-06:36 Observed by Fabio Carvalho (Assis, Sao Paulo Brazil, 25cm f/6 Newtonian) "Green colouration seen on a rim of Tycho, effect remained visible for only 2 minutes. Attempts to image it shortly afterwards failed as it had finished by then" An REA-Brasil observational report. ALPO/BAA weight=3.
On 1878 Oct 18 at UT 21:00? Gaudibert (France?, 4" refractor) observed Webb's white spot on SW border of Wargentin that had been brilliant the previous night, had completely vanished tonight. The Cameron 1978 catalog ID=204 and the weight=4. The ALPO/BAA weight=3.
Aristarchus 1975 Aug 02 UT 02:23-02:49 Observed by Foley (Kent, UK, 12" reflector, photos obtained) "Floor of crater was slate gray/blue & a dense blue-viol. obscur. at NW corner of floor. Photos show smudge there. Phenom. vanished at 0249h. No alert or blink in order to get photos before it faded. Crater was abnormally bright." NASA catalog weight=5. NASA catalog ID # 1412. ALPO/BAA weight=3.
Aristarchus 1897 Sep 22 UT 00:41 Observed by Molesworth (Trincomali, Shri Lanka, 9" reflector, conditions very good) "A Glimmering knotted streak seen beneath and parallel to the W wall. At the centre of the E. Edge of the shadow was another faint glowing effect – probably coincident with the central peak. The crater was more than half filled with shadow." NASA catalog weight=3. NASA catalog ID #290. ALPO/BAA weight=2.
On 1969 Nov 11/12 at UT23:30-01:00 Celis and Marti (Paso Hondo, Chile, 10" refractor, x96, 4" refractor, x80, 3" refractor, x60, seeing = turbulent) observed Aristarchus with 2 brilliant points, brighter than 8-9th magnitude (independent confirmation?) - Apollo 12 watch. The Cameron 1978 catalog ID=1206 and weight=3. The ALPO/BAA weight=2.
On 1981 Apr 07 at UT00:31-00:52 B.Hobdell (St Peterburg, FL, USA, refractor?, seeing IV) detected sporadic blue glowd and flashes from Aritarchus. This effect persisted for 30 minutes until observing condtions became too bad tocontinue.ALPO/BAA weight=1.
On 1981 Jun 05 at UT 01:08-02:04 B. Hobdell (St Peterburg, FL, USA, 10" and 4" reflectors, seeing II) found Aristarchus bright at the following times: 01:08, 01:10 and 01:15, and furthermore had yellow in its south east corner. Some cloud intervened, but upon clearing the crater was about 4th magnitude. At 01:45UT two very bright, long duration, yellow glows were seen in the south east. At 01:58UT two flashes seen in this location and at 01:59UT a white flash, then at 02:01UT a long blue flash, and subsequently other ones. The Earthshine was very clear tonight and bluish. The Cameron 2006 catalog ID=141 and the weight=0. The ALPO/BAA weight=1.
On 1981 Jun 05 at UT 01:08-02:04 B. Hobdell (St Petersberg, FL, USA, 10" & 4" reflectors) saw Copernicus (and some other craters) bathed in a blue haze. The cameron 2006 catalog ID=141 and weight=0. ALPO/BAA weight=1.
On 1981 Jun 05 at UT 01:08-02:04 B. Hobdell (St Petersberg, FL, USA, 10" & 4" reflectors) saw Manilius (and some other craters) bathed in a blue haze. The cameron 2006 catalog ID=141 and weight=0. ALPO/BAA weight=1.
On 1981 Jun 05 at UT 01:08-02:04 B. Hobdell (St Petersberg, FL, USA, 10" & 4" reflectors) saw Menelaus (and some other craters) bathed in a blue haze. The cameron 2006 catalog ID=141 and weight=0. ALPO/BAA weight=1.
On 1981 Jun 05 at UT 01:08-02:04 B. Hobdell (St Petersberg, FL, USA, 10" & 4" reflectors) saw Promontorium Laplace (and some other features) bathed in a blue haze. The cameron 2006 catalog ID=141 and weight=0. ALPO/BAA weight=1.
On 1981 Jun 05 at UT 01:08-02:04 B. Hobdell (St Petersberg, FL, USA, 10" & 4" reflectors) saw Tycho, Laplace (and some other features) bathed in a blue haze. The cameron 2006 catalog ID=141 and weight=0. ALPO/BAA weight=1.
On 1969 Nov 12/13 at UT23:30-01:30 Celis et al. (Valparaiso, Chile) - one observer saw Aristarchus with bluish scintillations occuring in an irregular way - Apollo 12 watch. The Cameron 1978 catalog ID=1207 and weight=1. The ALPO/BAA weight=1.
On 1981 Apr 08 at UT00:35-01:09 Hobdell (St Peterburg, FL, USA, 2.4" refractor) detected white-orange flashes coming from Aristarchus crater, using averted vision - the flashes were several minuates apart and not regular. The crater itself had a blue glow and was stronger at lower magnification. Earthshine was really clear and several features visible. Cameron 2006 catalog ID=128 and weight=1. ALPO/BAA weight=1.
On 1981 Apr 08 at UT00:35-01:09 Hobdell (St Peterburg, FL, USA, 2.4" refractor) found Bullialdus (and other craters) to be in a bluish haze. Cameron 2006 catalog ID=128 and weight=1. ALPO/BAA weight=1.
On 1981 Apr 08 at UT00:35-01:09 Hobdell (St Peterburg, FL, USA, 2.4" refractor) found Copernicus (and other craters) to be in a bluish haze. Cameron 2006 catalog ID=128 and weight=1. ALPO/BAA weight=1.
On 1981 Apr 08 at UT00:35-01:09 Hobdell (St Peterburg, FL, USA, 2.4" refractor) found Gassendi (and other craters) to be in a bluish haze. Cameron 2006 catalog ID=128 a nd weight=1. ALPO/BAA weight=1.
On 1981 Apr 08 at UT00:35-01:09 Hobdell (St Peterburg, FL, USA, 2.4" refractor) found Kepler (and other craters) to be in a bluish haze. Cameron 2006 catalog ID=128 and weight=1. ALPO/BAA weight=1.
Kepler In 1949 Feb 02 at UT 18:20-19:15 Y.W.I. Fisher (Brussels, Belgium, 4" refractor) observed in Earthshine a white between Kepler and Encke, in Earthshine. The glow began to fade at 18:50 and was gone by 19:15. The Cameron 1978 catalog ID=513 and the weight=2. The ALPO/BAA weight=2.
On 1880 Nov 06 at UT 20:00 an unknown observer observed a TLP at an unknown location on the Moon. The Cameron catalog has an entry for this date and time but does not specify the location, the observer or what was seen. The Cameron 1978 catalog ID=218 and the weight=0. The ALPO/BAA weight=1.
On 1981 Jun 07 at UT02:30-03:00 B. Hobdell (St Petersberg, FL, USA, 10" and 4" reflectors, seeing=I) at 02:30UT saw a flash from Aristarchus and another one from Schroter's valley. By 02:45UT Aristarchus was starting to be difficult to see and had occasionally a bluish cast. By 03:00UT the crater could only barely be seen. This was odd because visibility on the Earthlit side was really rather good. The Cameron 2006 catalog ID=143 and weight=0. The ALPO/BAA weight=1.
On 1981 Jun 07 at UT02:30-03:00 B. Hobdell (St Peterberg, FL, USA, 10 and 4" reflectors, seeing=1) saw Copernicus to be very bright in blue. Clarty of Earthsine was exceptional tonight. The Cameron 2006 catalog ID=143 and weight=0. The ALPO/BAA weight=1.
On 1969 Nov 11/12 at UT23:30-01:00 Mitchell, Celis and Marti (Paso Hondo, Chile, 10" refractor, x96, 4" refractor, x80, 3" refractor, x60, seeing = excellent) observed Aristarchus with a blue centre and irregular form, alternating with normal aspects. Some opacity (independent confirmation?) - Apollo 12 watch. The Cameron 1978 catalog ID=1208 and weight=3. The ALPO/BAA weight=3.
On 1981 Jun 08 at UT01:48-02:45 B. Hobdell (St Petersberg, FL, USA, 10 and 4" reflectors) could hardly see Aristarchus crater, however at 01:48UT it brightened in blue for about 3 minutes. Then at 02:20UT there was a bright flash, and by 02:25UT the crater was very bright, but by 02:45UT it was no longer visible. Cameron 2006 catalog ID=144 and weight=0. The ALPO/BAA weight=1.
On 1988 Nov 14 at UT 17:25-18:30 H. Miles (St. Minver, Cornwall, England, UK, 5"refractor? x60 and x120) found Aristarchus to be a white ill-defined circular patch. At 17:45UT it was a lot brighter (Cameron comments that this might have something to do with sky darkness). In contrast, Copernicus was just seen as a white patch and the Jura mountains could be seen (not as bright). Aristarchus grew brighter over time and there was a bright point on the west wall (seen at x60 and x120). Ït was fainter at 1854 & < At 1830. (Foley) said Earthshine cond. Superb with many regions clearly seen, but Aris. was dull. (Cooks) in hazy condition could not detect Aris." The Cameron 2006 catalog ID=338 and weight=0. The ALPO weight=1.
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.
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.
Lubbock 1973 Nov 02 UT 22:10-23:59 Observed by R.Hill (Greensboro, N. Carolina, USA) "Color in crater changed fro. gray to brownish -- strong enough change to be noted. Never saw anything like this 7 yrs. of observing". NASA catalog weight=3. NASA catalog ID #1379. ALPO/BAA weight=3.
On 1978 May 14 at UT21:30-22:52 P.W. Foley (Kent, UK, 12" reflector, seeing II and transparency excellent, no spurious colour) observed Aristarchus to be very bright in Earthshine and bluish. The CED brightness measuring device gave a very bright reading of 0.9, the brightest he had ever seen ir before was 0.3. Cameron 2006 catalog ID= 29 and weight=3. ALPO/BAA weight=2.
1987 Feb 06 UTC 02:35 Observed by Darling (Sun Praire, Wisconsin, USA, 12.5" Newtonian x342) "I was using a 12.5 f5 Newtonian reflector with a 9mm eyepiece and 2x Barlow with no filters. I had been observing other features on the Moon when I had panned to the area where the sunrise was taking place on Mount Piton. The mountain peak looked like a shimmering block of ice with a phosphorescence luminescence cloud around the peak. What was really interesting was the shaft of light streaming across the Lunar Maria that appeared like a cone and it came to a point near Mount Piton. The Mountain had the appearance of mother of pearl and the luster or glow that surround the peak only lasted about 20 minutes." The Cameron 2006 catalog ID=296 and gthe weight=4. 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). Ïn 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.
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 1916 Sep 05 at UT 19:30 Markov (Russia) observed in Plato light on shadow of the bands at the bottom of the crater. The Cameron 1978 catalog ID=364 and weight=3. The ALPO/BAA weight=2.
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.
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.
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.
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.
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.
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."
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.
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.
C. Brook of Plymouth UK, using a 4" refractor x216, noticed at UT 20:10 dark patches coming and going (in terms of visibility) on the floor of Plato. Occasional views of the central cratelet (seen as a white spot) were glimpsed. The dark patches seen lasted about 1-2 seconds before fading out during each visibility cycle. Teneriff Mountains were checked but no sign of seeing effects that might explain the dark floor patches. By 20:26UT the dark patch effect was fading and by 20:31UT floor detail was visible. Observations ceased at UT 20:34. Seeing conditions were II and the Moon was at a high altitude. Other observers were alerted but came on-line after the effect had finished. ALPO/BAA weight=2.
At approximately 18:43UT observer noticed that Censorinus, and its bright apron, appeared particularly brighter than normal. There was some spurious colour present - but just a redness along the southernmost extent of the apron visible; could not detect any blue along the northern edge however, he did do not suspect the colour to be anomalous. A re-examination at 18:51UT revealed that the crater had faded and was seen to fade visibly in real time to normal levels (over about a minute) by 18:53UT. Other features remained constant and so too did the apparent spurious colour.
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.
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.
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.
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.
Barker's Quadrangle (Capuanus) 26W, 34S 1949 Feb 9 UT 20:00? Observed by Moore (England, 12" reflector) :Quadrangle not seen, apparently misty. (quad. in Capuanus? see Wilkins & Moore, The Moon, p124)" NASA catalog ID=514, weight=4. ALPO/BAA weight=3..
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.
Plato 1998 Jul 05 P. Moore (Selsey, UK, 15" reflector, x200- x400, seeing II/III) comments that he is puzzled why the floor of Plato, which is light gray in shade, looks completely blank tonight. The ALPO/BAA weight=1.
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.
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.
P. Foley of Kent, UK, using a 12" reflector, seeing=III-II, noticed that initially that the crater was pretty dull and that the floor was a slate blue-gray in colour at 22:45UT. A noticeable green spot inside the crater on the south east appeared at 22:25UT and vanished at 00:50UT. Cameron notes that one doesn't get green with spurious colour. Crater Extinction brightness measurements were made at 22:00 UT (reading=2.8) and at 23:45UT (reading=3.7). The crater dropped in brightness from 3.7 to 2.8 at 23:50UT and remained lower until 3.0 at 23:50-03:15 UT. A graph was produced and showed Proclus and Censorinus at similar brightnesses, but Aristarchus variable. The Earthshine was 0.3. Cameron 2006 Extension catalog ID=31 and weight=5. ALPO/BAA weight=3.
Cobra Head 1967 Mar 23 UT 18:40-20:47 Observed by Sartory, Moore, Moseley (Farnham, England, 15" reflector (Sartory) seeing very poor & 10" refractor in Armagh, N. Ireland (Moore & Mosely) x360 - seeing Fair to Poor) "Red patch seen intermittently; moon-blink from 1916-2047h. Position agreed with Sartory who alerted them to Aris. area; checks on others were neg." NASA catalog weight=5. NASA catalog ID 1020. Then Aristarchus 1967 Mar 23 UT 18:40-20:30, 21:30 by Marsh and Farrant (Cambridge, England, 8" reflector, x330). "Suspected colour on SW (ast.) wall. Farrant saw color in crater, completely independently, (inform. suggests same phenom. as seen by Moore & Moseley tho they said Cobra head). NASA Catalog weight=5. NASA catalog ID # 1021. ALPO/BAA weight=3.
Gassendi 1967 Mar 23 UTC 18:40-18:50 Observed by Sartory (Farnham, England, 15" reflector) "Heavy blink on inner S. wall. Moved toward N. at 1845, faded at 1850." NASA catalog weight=3 (average). NASA catalog ID #1019.
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.
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.
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.
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 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 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.
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 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 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.
Plato 1874 Jan 01 UT 20:00? Observed by Pratt (England?) "Unusual appearance" NASA catalog weight=1. NASA catalog ID # 183. ALPO/BAA weight=1.
1982 Mar 08 Daniell UT 22:49-22:57 P.Madej (Hudersfield, UK) - A colour and brightness anomaly was seen a TLP alert was put out. Cameron 2006 catalog extension weight=165 and weight=3. ALPO/BAA weight=2.
"Brightening in blue filter, 1st for seconds, later for mins". NASA catalog weight=4 (high). NASA catalog ID #574.
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.
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?)"
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.
Schickard 1940 May 20 UT 20:00 Observed by Moore (England, 12?" eflector) "Fog on floor -- milky appearance, less pronounced than on 8/2/39 (see #456)." NASA catalog ID #465. NASA catalog weight=4. ALPO/BAA weight=2.
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 1971 Jan 10 UTC 20:17-20:42 Observed by Taylor (Slough, England, 8.5" reflector) "Blink (dark gray to black), 13x3km diam. on E. wall & floor in indentation in wall. Smaller by 2028 h. gone at 2035h. Reappeared at 2028h & gone completely at 2042h)." NASA catalog weight=3 (average). NASA catalog ID #1282.
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.
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.
Aristarchus vicinity 1842 Oct 18 UT 23:00? Observed by Gruithuisen (Munich, Germany) "Mingling of all colors in small spots in W. & NW of crater. (interposition of year dates? was # 101 --1842 prob. correct." NASA catalog weight=4. NASA catalog ID #121. ALPO/BAA weight=3.
Proclus 1955 Aug 03 UTC 04:13-04:40 Observed by Bartlett (Baltimore, MD, USA, 5" reflector, x180, S=5, T=5) "Floor blackish 2 intensity but in green filter assumed a distinctly mottled or flocculent appearance -- seen only in green. Neither blue nor red had any effect, but on previous eve. green light had not produced such an appearance." NASA catalog weight=4 (good). NASA catalog ID #602. The ALPO/BAA weight=3.
Aristarchus 1976 Jun 12 UT 05:21 Observed by Bartlett (Baltimore. MD. USA, 4.5" reflector, 40-225x, S=5, T=3, "Deep viol. tinge in N. 1/2 of nimbus. Faint blue-viol. radiance (gas ?) on E. - NE wall along crest. No color elsewhere, nor on plateau m." NASA catalog weight=4 (high). NASA catalog ID #1435.
F. Graham took some photos of the Cobras Head and found a blue cloud about 50 km in diameter and scattering light - Cameron says that this indicates high density. Darling found the Cobra's Head obscure and variable "clear and bright to diffused". Cameron was alerted observed (02:40UT) variations with periods of approximately 30 seconds, and thought that she could see a red tinge on the east rim of Aristarchus - checks elsewhere found no other colours. Darling found that a blue filter enhanced the effect and a red filter made it disappear. There was a blink at 02:55UT but no blink in the Cobra's Head, which looked fuzzy and lacking in detail. The effect was confirmed by Weier, who also saw two dark spots in the Cobra Head in blue but not in red light. The brightness of the Cobras Head was 6.0, Herodotus floor 5.5, NW wall 7.5, South wall, 7.0, Aristarchus south wall 9.0, west wall 9.0, south wall 7.0, East wall 8.0, and the central peak 10.0. Observer details were as follows: Darling (Sun Praire, WI, USA, 12.5" reflector, x159, S=9/10). D. Weier (Sun Praire, WI, USA, 12.5" reflector, x159, S= 9/10), W. Cameron (Sedona, AZ, USA, 8" reflector x110 and x220, T=6 and S=6) F. Graham (E.Pittsburgh, PA, USA, 7" refractor, thin haze). Cameron 2006 catalog ID=415 and weight=5. ALPO/BAA weight=4.
Archimedes 1940 Jun 20 UT 07:30 Observed by Haas (NM, USA, 12?" reflector) "NE wall (outer) had I=2.5 on this nite but 5.0 on Aug. 18 (see #471 -- both same phase so real diff. 2.5 normal?)" NASA weight=4. NASA ID No. #467. 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.
Proclus 1972 Nov 20 UT 20:20 Observed by Farrant (Cambridge, England, 8.5" reflector, x178) "Dark patch in crater. Disappeared by next nite. The normal ring seemed thickened. On Dec. 7. the crater appeared bright. Drawings. (prob. real LTP, nr. FM)" NASA catalog weight=3 (average). NASA catalog ID #1350.
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.
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.
On 1955 Oct 02 at UT 05:30-05:55 Bartlett (Baltimore, MD, USA, 3.5" reflector, x100, S=7, T=5) observed the following in Aristarchus crater: "Viol. gl. on E, NE rim, over EWBS resembled a viol. mist. Crater itself was hazy, could not get a sharp focus". The Cameron 1978 catalog ID=615 and weight=4. The ALPO/BAA weight=2.
W.Humboldt 1897 Dec 09 UTC 23:00? Observed by Goodacre (Crouch End, England, 12" reflector) "Shadow anomaly. Chocolate penumbral shade edging black shadow on E. wall." NASA catalog weight=3 (average). NASA catalog ID #296.
Mobberley noticed that Torricelli B was bright and had an even brighter spot on the inner north wall. The observation was made from UT19:45- 21:40 using visual and video techniques. There was also a bright region NNE of Toricelli B, that was noticed. Foley examined the video and found that the crater faded in brightness over time and also the bright area to the NNE was not as bright on video as had been seen visually. Foley speculates that because the CCD camera was sesnitive to the near IR that maybe the spot was blue?. Foley observed from 21:12-21:21UT and also saw the bright spot on the inner north wall - but saw a blue halo around the crater. Response in blue filter, darkening over whole region. Brightness measures with a crater extinction device (CED) indicated that the crater was 80-85% the brightness of Censorinus. There was a bright area NNE of the region. M. Cook observed 22:10- 22:16UT (15cm reflector and seeing III-IV) and also saw that the crater was very bright indeed with a spot NNE of the region (same position as 28/28 1985 observation) - suspected that the crater might have been brighter than Censorinus, but judgement effected by seeing. In a blue filter the crater dulled leaving the bright spot prominent (but only during a good moment of seeing) - therefore had some suspicion of seeing effects. At 01:00-01:04UT M. Cook used a 12" reflector on the area, but the seeing was even worse - but did manage a check of the brightness of Torricelli B to Censorinus and now made it one quarter of that of Censorinus and no sign of the crater dimming in the blue as had been seen earlier in the 6" refletor. A. Cook (Frimley, seeing V) at 21:15UT (Dec 27) thought that Torricelli B looked normal and saw no colour. At Dec 28 at UT 00:02-00:25 A. Cook obtained some CCD images through red+IR (Wratten 25) and IR (Wratten 87) but found no colour differences, though there was a very slight hint that a brightness fade may have occurred between those two observing times. Note that this report does not have an entry in the Cameron 2006 Extension Catalog. The ALPO/BAA weight=4.
Cobra Head 1955 Oct 31 UTC 19:00 Observed by Milligan (England?) "Dark blue obscuration" NASA catalog weight=3 (average). NASA catalog ID 624.
On 1983 Jan 29/30 at UT20:35-01:00 Sykes (UK?) observed that Linne appeared to brighten for approximately 20 min and had the appearance of a point (confirmed). This observation was made during a major Torricelli B TLP. The Cameron 2006 catalog ID=198 and the weight=5. The ALPO/BAA weight=2.
Torricelli B 1983 Jan 29/30 UTC 20:35-02:30 Observed by Foley (12" reflector, seeing Antoniadi II, Transparency=good, no spurious colour seen), Moberley (14" reflector, seeing Antoniadi II, transparency excellent, spurious colour strong), Cook, J & M (12" reflector, seeing Antoniadi II-III, transparency moderate). All observers based in southern England. "Initially crater brightest feature on the Moon, then it faded. Strong colour also seen by all observers e.g. green-blue to violet. Report of observations written up in JBAA Vol 100, No. 3, p117 123, (2000) - probably one of the best reorted TLP". The Cameron 2006 catalog ID=198 and weight=5. The ALPO/BAA weight=5.
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 1984 Feb 17 at 19:45-22:20UT P. Madej noticed colour in Aristarchus and telephoned the BAA Lunar Secton TLP network. Mosely at 21:15UT observed that Aristarchus was both bright and fuzzy - there was some spurios color (red on south and blue on the north) but this was replaced by violet. By 21:30UT (transparency=fair) the centre of the crater was bluish and the west wall creamy white. the north and south walls were brilliant white. By 22:00-22:30 UT the seeing had improved and the crater looked unusual - now the centre was violet and the west wall duller, off-white. By 05:35UT the crater was difficult to define according to Cook - 4 bands could be seen under II seeing and the north rim was fuzzy and less bright than the east wall (this was hazy). P. Moore observed that the crater was normal at 04:00UT. Cameron 2006 catalog extension ID=242 and weight=3. ALPO/BAA weight=2.
On 1984 Feb 17 at 19:45-22:20UT P. Madej (England, seeing=III- IV, x50)noticed that the crater Reinhold had a blood red spot on the northern terraces, at the base of the inner wall in a summit crater on the last of a crater chain or ridge descending from the top to floor". Cameron 2006 catalog extension ID=242 and weight=3. ALPO/BAA weight=3.
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.
Aristarchus 1976 Aug 11 06:44 Observed by Bartlett (Baltimore, MD, USA, 4.5" reflector, 45-300x, S=4-3, T=4) "Pale viol. radiance (gas?) on plateau m. Dark viol. tinge on nimbus. C.p.=10 deg walls=8deg, & all of floor=8 deg. W.wall out of focus due to haziness (gas?)." NASA catalog weight=4 (high). NASA catalog ID #1441.
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.
E. of Picard 1879 Nov 01 UT 00:00? Observed by an unknown observer (England?) "Bright spot. (Fort admits he has several more of these records of LTP, but does not give them because they don't fall nr. Mars'opposition which he tho't was cause of them.) Elevation rising N- S, with shading toward terminator." NASA catalog weight=3 (average). NASA catalog ID #214.
On 1978 May 24 at 00:40-01:05UT P. Moore (Sussex, UK, and using a 12.5" reflector at x300-400 - seeing IV) saw colour in Aristarchus (red on the south east wall and southern "horn" of the crater. He could not detect colour elsewhere, but felt that the effect might have been spurious colour. With the increasing altitude of the Moon the light effect decreased. Moore detected red the next night as well (May 25th) and on May 27th, but it was not present on May 29th. The Cameron 2006 Extension catalog ID=33 and the weight=0. The ALPO/BAA weight=1.
Gassendi 1940 Aug 20 UT 03:25 Observed by Haas (NM?, USA, 12" reflector?) "Largest bright spot on SE pt. of floor had I=8.6 (real changes? see @ '#649, 474, & 475, all similar change)." NASA catalog weight=4. NASA catalog ID #472. ALPO/BAA weight=2.
Aristarchus 1976 Aug 12 UT 07:30 Observed by Bartlett (Baltimore, MD, USA, 4.5" reflector 45-225x, S=6=3, T=5) "Nimbus around c.p.=2deg, S.floor=6deg & was red; rest of floor=8deg. This is only tint in Aris.). Tonite saw a pale red glow suffasing the S. region of the crater. Bright blue radiance (gas?) on ENE wall. Viol. radiance on plateau m gone tonite. Red glow on 13th & the region was yellow- brown." NASA catalog weight=4 (high). NASA catalog ID #1442.
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.
On 1983 Jan 30 at UT 23:45 Chapman (England, UK) observed that Censorinus was low in brightness. The Cameron 2006 catalog ID=199 and the weight=4. The ALPO/BAA weight=2.
On 1983 Jan 30 at UT 23:45 P.W. Foley (Kent, UK, 12" reflector) measured that the brightness of the region around Toricelli B was 2.3 (high) and there was a slight blue colour. The Cameron 2006 catalog ID= 199 and the weight=4. The ALPO/BAA weight=2.
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.
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.