David Darling reported Aristarchus to be glowing blue and brighter than its surroundings. The blue glow covered the crater and adjacent terrain. The brightness kept on getting higher until it was dazzling and could be seen with the naked eye, without the telescope. Estimated with the naked eye to be magnitude +3.5 where as Earthshine was magnitude 5. The effect lasted for 7 minutes. The observation was confirmed by David Darling's wife. Cameron 2006 extended catalog ID=53 and weight=2. Observer located at Sun Praire, WI, USA and used a 12.5" reflector x78. ALPO/BAA weight=3.
Taruntius on 1980 Apr 18 UT 22:33 P.Madej (Huddersfield, UK) noticed that this crater changed from dark black to almost a light grey over a period of about 30 seconds. Observation started at 22:27 and ended at 22:37. When the observer saw this effect in that 10min period is not given, so the UT above is the nid UT of the observing period. The ALPO/BAA weight=1.
On 1981 May 07 at UT20:30-21:20 M. Mobberly of Suffolk, England (14" reflector - seeing=poor and transparency=poor) P.W. Foley of ---- saw faintish yellow-brown streaks in Aristarchus. Apparently these had been seen the previous night, but were much fainter tonight. Bartlett had previously seen this effect on the southern floor of the crater according to Cameron. The Cameron 2006 catalog extension ID No. is 133 and the weight=3.
On 1979 May 30 UT 02:50-02:57 D. Darling (Sun Praire, WI, USA, 12.5" reflector, x80, S=II=I and transparency=good-poor) observed Aristarchus to be glowing in the dark at magnitude 3 and at its maximum it was dazzling. The glow vanished at 02:57UT. The Cameron 2006 catalog ID=54 and weight=1. The ALPO/BAA weight=2.
Proclus 1971 Jan 01 UTC 19:00-20:25 Observed by Marchart (Aldershot, England, 8" refractor x500). "Color patch on N wall, red & green on inside, even tho eyepieces were rotated & changed. (chrom aberr. ?) (experienced observer)." NASA catalog weight=1 (very low). NASA catalog ID #1280.
On 1983 Mar 19 at UT04:56-05:54 Louderback (South Bend, WA, USA, 3.1" refractor, seeing=1-2 and transparency=4) observed that at 05:15UT Eimmart appeared fainter than the observing session began at 04:56 UT. There was also a bright flash on the north wall that "fluctuated at rate of 9s" Cameron comments that atmospheric blow ups were 11-12s. Louderback found that the TLP was seen in the blue filter but not in the red. The Cameron 2006 catalog ID=207 and the weight=4. The ALPO/BAA weight=3.
Lyell 1972 Nov 10 UTC 23:43 Observed by Bartlett (Baltimore, MD, USA, 3" refractor x54, x100, x200S=3, T=5) "At apparent center of floor & edge of morning shadow an elongated, N-S irreg. obj. dull whitish-gray, albedo=4 like a c.p. (photo in Kwasan atlas in 1963 taken at col. 339.3 deg has a faint suggestion of a bright spot in that place- (plate 20) LO IV66 h2 & 73 H2, sun elev. @ 20deg show an even, dark floor with a very small crater right in center -- unresolvable at earth. Kwasan photo's spot could be an artifact" NASA catalog weight=3 (average). NASA catalog ID #1349.
On 1991 Oct 14 at 04:12 UT M.A.L. Numi (Jeddah, Saudi Arabia) observed that the crater Busching (20E,40S) underwent a sudden change. The 2006 Cameron catalog ID was 435 and weight=1. The ALPO/BAA weight=1,
Messier 1878 Nov 01 UT 20:00? Observed by Kleis (Cologne, Germany, 6" refractor?) "Shaped like a half moon with E. edge missing. Appeared diffuse. Messier A was sharp & completely defined. Was sure there was fog there. Next day same appear. Shadow was diffused before noon, Mess. A is more yellow after noon, greener near Mess. A noon, both are same color." NASA catalog weight=4. NASA catalog ID #206. ALPO/BAA weight=2.
On 1981 Mar 12 at UT 19:25-20:30 Butler (of Brixton, UK, using a 10" reflector at 32-64x) noticed that Aristarchus was not visible, although the Earthshine was very obvious. Foley (of Kent, UK, and using 12" reflector) noticed that the crater was only just visible but Plato could definitely be seen. Cameron's 2006 TLP extension catalog ID=125 and weight=0. ALPO/BAA weight=2.
On 1789 Sep 26 at UT 03:30 Schroter (Lillienthal, Germany) observed close beneath Mons Blanc at the west foot, in the dark, a small 5th magnitude, speck of light. Its round shadow was sometimes black, sometimes grey. Cameron suspects that this is the same as her TLP report No. 50. the Cameron 1978 catalog ID=62 and weight=4. The ALPO/BAA weight=3.
On 1789 Sep 26 at UT04:25? Schroter (Lillienthal, Germany) noted a bright point 26" north of Aristarchus crater. Note that the year might have been 1788? The Cameron 1978 catalog ID=50 and the weight=3. The ALPO/BAA weight=3.
On 1789 Sep 29 at UT04:25? Schroter (Lillienthal, Germany) noted 1'18.5" south east of plato was a whitish bright spot shining somewhat hazily, 4-5"in diameter and at 5th magnitude. He never saw this again. The spot became conspicuous at times and then disappeared. There was nothing else similar in Earthshine. Note that the year might have been 1788? The Cameron 1978 catalog ID=50 and the weight=3. The ALPO/BAA weight=3.
Schroter, from Lillenthal in Gemany, in 1789 (possibly it was 1788) Sep 26 UT 04:30 saw a small nebulous bright spot on the northern edge of Mare Crisium. Cameron 1978 catalog ID=50 and weight=3. ALPO/BAA weight=1.
On 1987 Nov 27 at 19:35-21:04 UT M.C. Cook (Frimley, UK, seeing IV-V) saw spurious colour on the crater floor and also on the rim. Two bright spots were seen on the west rim (the brightest one was on the NW rim). Saw >>N-NW lip 21:00UT blink in red. The was apparently confirmed by A.C. Cook (according to Cameron) at 21:04UT. The ALPO/BAA weight, in view of the poor observing conditions is 1.
Menelaus 1976 Sep 01 UT 00:40 Observed by Bartlett (Baltimore, MD, USA, 4.5" reflector, 45-300x) "Upper 1/2 of W.wall bright white (8deg). Lower 1/2 much duller at 4 deg & distinctly bluish-gray. Same as seen in Aris. & Grimaldi & thinks it is due local agency (gas?)." NASA catalog weight=4 (high). NASA catalog ID #1447.
Messier 1878 Nov 02 UT 20:00? Observed by Kleis (Cologne, Germany, 6" refractor?) "Shaped like a half moon with E. edge missing. Appeared diffuse. Messier A was sharp & completely defined. Was sure there was fog there. Next day same appear. Shadow was diffused before noon, Mess. A is more yellow after noon, greener near Mess. A noon, both are same color." NASA catalog weight=4 (very high). NASA catalog ID #206.
On 1953 Sep 16 UT03:00 R.M. Lippert (San Diego, CA, USA, 20cm Cassegrain reflector, x90)saw a bright magnitude 1 flash on the Moon, that was probably on the east rim of Werner(?) crater. It is unclear if the observer meant it was really magnitude 1, or was what a magnitude 1 star would have looked like. The flash was yellow-orange in colour. Observation described in the "Observations and Comments" column in the December, 1953 Strolling Astronomer (Vol. 7, No. 12), on page 170. The ALPO/BAA weight=3.
Alphonsus 1972 Sep 15 UTC 18:48-18:56 Observed by Hopp (13.25E, 52.5N, 75mm refractor) "Diffuse white to blue area within the crater - not sure" T=4, S=4. Ref: Hilbrecht & Kuveler Moon & Planets (1984) Vol 30, pp53-61.
On 1989 Dec 05 D. Darling of Sun Praire, WI, USA, saw two dark spots on the SE floor of Proclus. The first dark spot was seen through 3" refractor and then also through a 12.5" reflector (35x and 154x). Seeing was S=10 and T=5. He noticed that at 23:00UT the wall spot was less well defined. Darling also comments that he observed reflecting glint, almost as if from a glass surface - he had not seen this effect before. A telephone alert was issued and Caruso verified the spots. Cameron comments that the spots were not shadows because the Sun was at an altitude of 52 deg at Proclus at the time and she states that the steepest slope ever mesured on the Moon was 52 deg and not inside Proclus. Other observers observing were: Weier (6.5" refractor x284 and S=3/10), Caruso (8" reflector x100), and Cameron. The Cameron 2006 catalog extesnion ID was 382 and the weight=1. ALPO/BAA weight=3.
Dawes 1948 Feb 17 UT 19:30 Observed by Thornton (Northwick, England, 18" reflector) "Did not see c.p. saw cleft-like streaks from SW crest to E, shadow." NASA catalog weight=3 (average). NASA catalog ID #501.
Williams of the UK, on 1882 Aug 21 at 19:30UT (Moon's age 7.9 days) noticed a spot at least half as bright, and as large as Picard, near to Picard crater. This observation was reported in the Astronomical Register of the Royal Astronomical Society and is not included in the Cameron catalogs. It is one of many measurements of the brightness of this spot for different illumination angles and is one of three outlying brightness points spotted on a graph by Willaims. The ALPO/BAA weight=3.
Archimedes 1967 Jan 18/19 UT 23:00?-01:00? Observed by Delano (New Bedford?. Massachussetts, USA, 12.5" ? reflector) and by Corralitos Observatory (Organ Pass, NM, USA, 24" reflector + Moonblink) "Saw an obscuration or unusual appearance on floor. Not confirmed by Corralitos MB., but their rep't says Aristarchus)" NASA catalog weight=4 (high). NASA catalog ID #1009. ALPO/BAA weight=1.
Pickering 1971 Jan 04 UTC 20:29-20:37 Observed by Collier (London, England) "Between Saunder and Rhaeticus, apparently coming from Pick. After 2027h it dimished with extraordinary swiftness, like a light goes out. (experienced observer)" NASA catalog weight=?. NASA catalog ID # 1281. Note that this crater was previously called E.C. Pickering before the IAU renamed some craters.
Archimedes 1966 Mar 29 UT 21:00 Observed by Hill (England, 24" reflector, x250, S=E) "Brightening of E-W bands across floor. (Obscuration accord. to Moore)" NASA catalog ID #923. NASA catalog weight=3. ALPO/BAA weight=1.
On 1987 Nov 28 UT at 20:14 (possibly earlier)-20:44 M.Mobberley saw the northern rim of Proclus very bright for first quarter. There were streaks half way up the wall and these seemed to vary in brightness and length in seconds. Seeing was at first suspected but became doubtful over this being a cause. There was also another bright streak that changed brightness over 5 minute intervals (Cameron says that this is not atmospheric) Apparently video was taken and confirms the effects. A sketch was also made. M. Cook detected a blink with coloured filters i.e. being brighter in red light (Also apparently confirmed by Louderback). Estimated the north west wall was x3 brighter than Censorinus. Censorinus itself varied in brightness as measured using CED devices. P. Foley decided that the north was was much brighter than Proclus (beyond the limits of the scale. However both Moore and Mason agreed that the north wall of Proclus was very bright but shimmering around in the bad seeing. They did not see any bright spots either. A.C. Cook (20:18-20:44UT) confirmed that the north wall of Proclus was very bright. Towards the end of the observing period the north wall had faded from this maximum brightness - Cameron suspects that this might have been as a result of an eyepiece misting up. The TLP was also observed by Foley (Maidstone, Kent, UK) and he reported: "Bright spot on north wall, Moon blink reaction". A BAA Lunar Section report with extracts from the 2006 Cameron catalog. Cameron 2006 catalog ID=315 and weight=4 (or 5?). ALPO/BAA weight=3. Apart from Louderback, all observers were based in the UK and had a vatiety of telescopes and observings conditions.
On 1886 Jun 10 at UT 21:00 (estimated) Tempel of Germany, saw a star- like light (Cameron comments that the reference in the Middlehurst catalog is wrong). Cameron 1978 catalog ID= and weight=4. ALPO/BAA weight=3.
On 1981 May 12 UT 22:00? M.C. Cook (Frimley, UK and using a 12" reflector), noticed that Censorinus was very bright, fuzzy and occasionally brighter than Proclus. However both Foley (Kent, UK) and Amery (Reading, UK) using a C.E.D. found that Proclus was brighter than Censorinus as it had been during April and May 1981. However Chapman obtained the reverse of this. Cameron 2006 extension catalog ID=138 and weught=3. ALPO/BAA weight=2.
On 1989 Dec 06 at 23:09-23:34UT D. Darling of Sun Praire, WI, USA (3" refractor x36 and x90, and then a 12.5" reflector at x64, S=7/10 and T= 4, saw dark spots in Proclus (not as dark as those from 5th Dec 1989). Two telescopes were used and the bigger of these revealed some shading on the floor of Proclus approximately a third as intense as he had seen the previous night. A sketch was made. The TLP finished by 22:34UT. Cameron comments that the dark patches could not be due to shadow as the altitude of the Sun was too high at proclus. The Cameron 2006 extension catalog ID=383 and the weight=0. The ALPO/BAA weight=2.
On 1981 May 12 UT 22:45-2325 M.C. Cook (Frimley, UK and using a 12" reflector), noticed that Censorinus was very bright, fuzzy and occasionally brighter than Proclus. However both Foley (Kent, UK) and Amery (Reading, UK) using a C.E.D. found that Proclus was brighter than Censorinus as it had been during April and May 1981. However Chapman obtained the reverse of this. Cameron 2006 extension catalog ID=138 and weught=3. ALPO/BAA weight=1.
In 1952 Nov 26 at UT 01:00? Carle (USa, 8" reflector, x700, seeing = poor) observed the following in Plato: "Sketch shows 8 spots -- 5 craters showed interior shad., 1 completely filled, but no others seen despite several hrs. of study. Spots that should have been seen were missing. poor seeing converts floor into shimmering shapeless blob. Has observed it under good seeing & seen nothing on fl. as others have noted". The Cameron 1978 catalog ID=555 and weight=3. The ALPO/BAA weight=2.
Proclus 1976 Jul 06 UT 01:35 Observed by Bartlett (Baltimore, MD, USA, 3" refractor, 40-450x, S=6, T=3) "Nothing vis. on floor (albedo=2 deg?) (usually features are vis.)" NASA catalog weight=4 (high).NASA catalog ID #1437.
On 1955 Aug 27 at UT 01:51 McCorkle (Memphis, Tennessee, USA, 6.5" reflector, x200) observed a 2nd magnitude bright flare on the dark side of the Moon. This remained steady, fading slightly before abruptly disappearing. Cameron suggests that this might have been a meteor. The Cameron 1978 catalog ID=604 and weight=0. The ALPO/BAA weight=1.
Although the crater was on the night side, a small bright spot was seen. This was blue, almost UV, and equivalent to a star of magnitude 2. It flashed over intervals of about 30 seconds and changed in colour from UV to blue. The BAA Lunar Section TLP network was alerted. Mobberly and J.Cook did not see much although J. Cook may have seen something, but located else where? Cameron lists this as a confirmed? observation? The Cameron 2006 TLP xtension catalog has this TLP with an ID No. of 258 and a weight of 4. The ALPO/BAA weight is 2.
Ross D 1964 Apr 21 UT 04:23-05:01 Observed by the Capens (CA, USA, 16" and 6", seeing 3-5, transparency 5+) "Obscuration of its rim" NASA catalog weight=4. NASA catalog ID #808. ALPO/BAA weight=2.
On 1983 Apr 21 at UT 21:55-22:05 N. King (Winersh, Berkshire, UK, using a 150cm f/8 reflector, with seeing I and transparency good, little spurious colour, just a little in Plato). Although observing since 21:25UT the observer noticed a cery, just detactable faint green colour just after the dark shade around the inner eastern crater rim. The effect faded and by 22:05UT had completely gone. This report is not in the Cameron 2006 catalog. It is a BAA report. The ALPO/BAA weight=2.
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.
Messier and A 1966 Dec 22 UT 06:00-06:30 Observed by Kelsey (Riverside, CA, USA, 8" reflector, x200, S=G, T=P) "Blinks on floors of both craters (blink device not stated)" NASA catalog weight=2 (low). NASA catalaog ID #1004.
On 1980 Apr 24 at 23:35UT Marco Petek (Porto Alegre, Brazil, using a 7.5" refractor noticed that the center of Plato was bright and opaque and the observer thought it was similar in appearance to Linne. A sketch was made and two other observers confirmed the appearance. Cameron mentions that Petek is an experienced observer. Cameron 2006 catalog extension TLP ID=91 and weight=5. ALPO/BAA weight=3.
On 1985 mar 01 at 20:00UT? Moseley noticed a violet band (tapering to an apex close to the crater centre and merged with the eastern exterior) around Toricelli B, however M. Cook (Frimley, UK) had seen a dusky band(England, UK) on an earlier photo. There was no terminator shadow in the crater. Cameron 2006 Catalog Extension TLP ID=260 aqnd weight=3. ALPO/BAA weight=3.
2004 Jan 02 UT 09:05 (approx) M. Collins (Palmeston North, New Zealand, ETX 90, seeing 3, clear) saw a possible(?) flash north of Carlini D at about 16W, 35N in adverted vision. It lasted only a split second. The ALPO/BAA weight=1.
Williams of the UK, on 1892 Aug 23 at Moon's age 10.0 days, noticed a spot now rated at +1.5 (in brightness) that had been seen on the 21st Aug, near Picard. Williams comments that this is the only obsewrvation that departs "much" from the curve of diurnal brightness. The spot was descibed as "nearly as large as Picard and nearly half as bright. This observation was reported in the Astronomical Register of the Royal Astronomical Society and is not included in the Cameron catalogs. It is one of many measurements of the brightness of this spot for different illumination angles and is one of three outlying brightness points spotted on a graph by Willaims. The ALPO/BAA weight=3.
Observed by Chernov (Russia) "A periodic change in shape of small dark spot at bottom of round spot further N. adjacent to inner wall. It was larger than in proceeding months at same sun elev." NASA catalog weight=2 (low). NASA catalog ID #669.
The UT given in the Cameron 2006 extension catalog are: 20:58, 23:25- 02:20 and 01:40-04:00, however it is not clear what UT applies to which of the observers or the two features reported as having TLP on that night. On 1984 Feb 12-13 Marshall (South Anerica, seeing=III-II) noticed that Moltke was very bright with a fuzzy violet hue - he had never seen it like this before. Cameron 2006 catalog extension TLP ID= 240 and weight=2. ALPO/BAA weight=3.
The UT given in the Cameron 2006 extension catalog are: 20:58, 23:25- 02:20 and 01:40-04:00, however it is not clerr what UT applies to which of the observers or the two features reported as having TLP on that night. On 1984 Feb 12-13 Marshall (South Anerica, seeing=III-II) saw initially no craterlets in Plato, despite the Moon being at a high altitude. At 01:45UT the northwest corner of Plato was red. Again no other craterlets showed. He found the surrounding wall to be too bright and this was confirmed by Crater Extenction Device readings and had problems focussing on the crater. By 02:00-02:50UT he noticed variability in the visibility of the craterlets. By 03:48UT the central craterlet was much brighter than before and the crater doublet had brightened but the southern craterlet was still invisible. Cameron comments that Marshall was a very experienced observer. A. Cook (of Frimley, UK) obtained a photodiode line scan image of Plato. The brightness of the north west wall was brighter than the bright area on the west wall. Marshall and Mosely both saw a dark area on the floor of Plato close to the south wall (from clock position of 11 o'clock. There was a prominent white spot on the floor and the central craterlet was seen, but only under good conditions. Mosely does not discuss the west and north west wall brughtnesses that were seen earlier by Cook and Marshall. Cameron 2006 catalog extension TLP ID=240 and weight=2. ALPO/BAA weight=3.
On 1988 Dec 18 at UT20:25 W. Cameron (Sedona, AZ, USA - TV camera telephoto) noticed on a live TV shot of the Moon (apparently channel 3 TV broadcast at 11:25PM local time), that Proclus was brighter than Censorinus (or Dionysus) and was the brightest feature on the Moon. It was photographed from San Juan in Puerto Rico. Cameron 2006 catalog ID= 342 and weight=. ALPO/BAA weight=5. ALPO/BAA weight=1.
Plato 1976 Sep 04 UT 02:35-03:35 Observed by Porter (Sarragansett?, Rhode Island, USA, 6" reflector x100, S=5, T=?) "At 0235h albedo of floor was est. at 3. At 0325h the pt. was albedo =1, 2 whole steps darker than earlier & noticeable to the obs. 10-15 min later it returned to normal. (the few meas. of albedo for this age were 1.5-2 which suggests that the meas. of 3 was the anomalous one. Another pt. did darken -- as reported). NASA catalog weight=3. NASA catalog ID #1448. ALPO/BAA weight=1.
Plato 1966 Dec 23 UT 06:15-07:10 Observed by Kelsey (Riverside, CA, USA, 6" reflector, S=P, T=G) and Coralitos Observatory (Organ Pass, NM, USA, 24" reflector +Moonblink) "3 brilliant spots on floor, all showed blinks, (permanent colored Ground features ?). Not confirmed by Corralitos MB." NASA catalog weight=2 (low). NASA catalog ID #1005.
On 1985 Mar 02 at 20:00UT? Marshall (Medeline, Colombia, South America) measured some very low Crater Extinction Device brightness readings of Censorinus compared to Proclus. The Cameron 2006 catalog extension ID= 261 and the weight=3. ALPO/BAA weight=2.
On 1990 Sep 30 at D. Darling (Sun Praire, WI, USA, 12.5" reflector, x150) observed a red spot on the west wall (bright in red filter and faint in the blue filter. No filter reactions were found elsewhere. Gassendi had much detail visible. A sketch was made. BAA observers in the UK were alerted but they could not observe due to cloud. Cameron 2006 extension catalog ID=411 and weight=5. ALPO/BAA weight=3.
Gassendi 1977 May 28/29 UT 20:45-21:15 Observed by D. Sims (Dawlish, Devon, UK) saw a hazy area on the south east floor that was normal in red and white light but darker in blue. This was partly confirmed by J-H Robinson (Devon, England, 10" reflector) 21:24-23:12 who saw the south east floor of Gassendi to have a loss of detail - but no colour seen, although at 21:57-21:58 it was slightly brighter in red than in blue briefly. P. Doherty (22:45-23:15) did not see anything ususual. D. Jewitt (22:22-22:55) did not reveal anything ususual, apart from spurious colour. The Cameron 1978 catalog ID=3 and ID=1463. The ALPO/BAA weight=3.
Aristarchus, Schroter's Valley, Herodotus 1881 Aug 06 UT 00:00? Observed by Klein (Cologne, Germany, 6" refractor, 5" reflector) "Whole region between these features appeared in strong violet light as if covered by a fog spreading further on 7th. Examined others around & none showed effect. Intensity not altered if Aris. placed out of view." NASA catalog weight=4 (high). NASA catalog ID #224. ALPO/BAA weight=3.
On 1982 Apr 04 at UT 23:30-00:25 P. Madej (Huddersfield, UK, 7cm refractor & 16cm reflector) noticed the TLP in his refractor first of all at x25. So stepped up the magnification to x111 and found the crater brightness not what he was expecting. He tried different filters but found no difference in brightness. With the 16cm reflector however some changes in brightness were dected. The crater has a very pale yellow colour and it was slightly darker than Lacus Somniorum. P. Foley tried to confirm at 00:09 but the crater looked normal then. The Cameron 2006 catalog extension TLP ID is 167 and weight=3. ALPO/BAA weight=2.
A blue tinge was seen inside and outside the crater perimeter. The surrounding halo lost brightness that was observed on 1993 Jan 29. Observed on Apr 19, 20 and 28th. Cameron 2006 extension catalog ID=213 and weight=5. ALPO/BAA weight=3.
Furnerius 1961 May 26 UT 02:20-03:00 Observed by Cameron (Aldephi, MD, USA, 3.5" Questar reflector x160, S=G) "Crater stood out like glittering points (small craters on rim?). Many features examined but effect seen only on this crater and Stevinus (Specular refl. from flat surface?)" NASA catalog weight=1 (very low). NASA catalog ID #738.
Plato 1980 May 25 UT 21:33-22:54 Observed by North (Seaford, UK, seeing III-IV, 460mm Newtonian) Definite strong reddish glow along NNW border, definitely much stronger than spurious colouration and always visible when telescope moved in RA and Dec to eliminate possible chromatic aberation effects in the eyepiece. Effect ended by 21:54 UT. BAA Lunar Section Report. ALPO/BAA weight=2.
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.
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.
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 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.
On 2002 Feb 24 UT 06:05-06:20 W. Haas (Las Cruces, NM, USA) observed that the shadow was, almost, but not completely black. This might have been related to the observing conditions. ALPO/BAA weight=2.
On 1955 Oct 28 at UT00:00? Kozyrev (Crimea, Soviet Union, 50" reflector) detected in Aristarchus Fraunhofer lines in UV spectra that were much narrower than in the solar spectrum. This indicated luminescent glow which overlapped contour(?) lines. Greatest after Full Moon, but fluctuated monthly with no indication of solar activity effect. The Cameron 1978 catalog ID=621 and the weight=5. The ALPO/BAA weight=5.
On 1955 Oct 28 at UT 00:06 W. Taylor saw a naked eye flash on the Moon in the north east area, on the edge of Mare Vaporum. The flash was intense and radiated to a large area. The duration was 1/4 seconds.
Aristarchus, Schroter's Valley, Herodotus 1881 Aug 07 UT 00:00? Observed by Klein (Cologne, Germany, 6" refractor, 5" reflector) "Whole region between these features appeared in strong violet light as if covered by a fog spreading further on 7th. Examined others around & none showed effect. Intensity not altered if Aris. placed out of view." NASA catalog weight=4 (high). NASA catalog ID #224.
Aristarchus 1981 Mar 17 UT 22:40-23:25 Observed by Moore (Selsey, England, 15" reflector, seeing III) "Aristarchus very bright according to Crater Extinction Device and a coloured blink detected" BAA Lunar Section TLP report. ALPO/BAA weight=1.
On 2016 Jun 17 UT 05:00 A.Anunziato (AEA, Argentina Meade ETX 105, seeing 7/10, sketch made) observed a very tiny light spot where the shadow from topographic relief to the south of Vallis Schroteri nerges into the crater rim shadow on the floor of Herodotus. There should be no light spot here. ALPO/BAA weight=1.
Gassendi 1939 Aug 27 UT 02:00 Observed by Haas? (NM? USA, 12" reflector?) "NE part of c.p. was I=6.4, compared with I=9.4 on 9/28/39 (see #462) under similar cond.@ NASA catalog weight=4 (high). NASA catalog ID# 458.
All observers saw a blue tinge seen inside and outside the crater. Marshall observed a bright spot in the middle of the crater floor and thought perhaps that it was a central peak. No central peak can be found on Lunar Orbiter images. Cameron 2006 Catalog extension ID=214 and weight=5. ALPO/BAA weight=4.
Proclus 1976 Sep 06 UT 02:00 Observed by Bartlett (Baltimore, MD, USA, 4.5" reflector 45-300x, S=3, T=5) "Nothing vis. on floor of 2deg brightness. Usually floor ray & Proc. A are vis. at this col. & c.p. is 5 deg bright. (must have been 2 deg tonite)." NASA catalog weight=4. NASA catalog ID #1450.
Cobra Head, Aristarchus 1964 Feb 25 UT 02:37-02:38, 02:39-02:42 Observed by Budine (Binghamton, New York, USA, 4" refractor, x250, S=6, T=4) "Red flashes" NASA catalog weight=3 (average). NASA catalog ID # 802.
Plato & Pico 1984 Mar 14/15 UT 19:18-01:48 Observed by Foley (Kent, England, 12" Reflector seeing I, Transparency Very Good) "Obscuration and colur seen on Plato and colouration and brightness seen on Piton (CED used)" BAA Lunar Section Report.
Plato & Pico 1984 Mar 14/15 UT 19:18-01:48 Observed by Foley (Kent, England, 12" Reflector seeing I, Transparency Very Good) "Obscuration and colour seen on Plato and colouration and brightness seen seen on Piton (CED used)" on and Colour" BAA Lunar Section Report.
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.
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.
Flashing spot at end of SV fluctuated. Herzog, Darling & Weier confirmed spot but not fluctuation. Spot brighter in red than blue, but Cobra Head was bright in blue. No other region was abnormal.
On 1980 Apr 28, Louderback (South Bend, WA, USA using a 8" reflector and a 2.5" refractor) observed a very bright reg region on top of the south west rim of Aristarchus crater. This was on the same side as the ray system between Aristarchus and Herodotus. Louderback noticed some chromatic aberation - blue where he had seen the red patch before. Louderback suspects chromatic aberation was the cause although did not see red in that region ever again. "Patch was between his observation points A and C. Point C was 5 points brighter in the red filter than in the blue." A sketch was made. Cameron suspects that the TLP was real. Cameron 2006 TLP catalog extension ID=92 and weight=3. ALPO/BAA weight=2.
Louderback observed that the south west wall was a creamy deep yellow. There was also strong fluorescent blue on the west wall of the Cobra Head - Schroter's Valley area and this was similar to the violet glare seen on Aristarchus at times. Violet was seen between Aristarchus and the Cobra Head. Seeing coditions were poor. Brightening of a point near C occurred roughly every 10-15 seconds and lasted 0.5 sec - (Cameron concludes that this was not due to the Earth's atmosphere). A 0.2 step drop in brightness was seen on point A (twin spots). Point C had reduced by 0.6 steps. Elsewhere was stable in brightness. Cameron 2006 catalog ID=281 and weight=4. ALPO/BAA weight=3.
Variations in vapor column rising from the Cobra Head feature (seen on several nights in succession) and also in the visibility of craterlets A, C, F. Sunrise +2d. (time est. fr. gives colongitude). Cameron 1978 catalog ID=279 and weight=3. Pickering was observing from the southern station of Harvard University in Arequipa, Peru.
Manilius 1939 Jun 30 UT 06:05 Observed by Haas (NM?, USA, 12"? reflector) "Dark area in S. part was I=2.0 but was I=3.7 on 7/30/39. Obs. conditions were very similar." NASA catalog weight=4 (high). NASA catalog ID #449.
Aristarchus 1975 Sep 18 UT 21:00? Observed by Foley (Kent, England, 12" reflector) "Deep blue-viol. spot in NW (IAU?) interior corner." NASA catalog weight=3. NASA catalog ID #1414. ALPO/BAA weight=3.
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.
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.
Plato 1937 Jul 22 UT 06:20 Observed by Haas (Alliance, Ohio, USA, 12" reflector?) "Floor distinctly greenish, but was gray on June 23, 1937 at 0430 & col.84 (normal?)" NASA catalog weight=4 (high). NASA catalog ID #421. ALPO/BAA weight=3.
Plato 1916 Oct 10 UT 21:00? Observed by M, Maggeni (Florence Obs., Italy) "Reddish shadow spread over part of crater. Looked like vapor (like nitrous vapor) and obscured underlying craters. The Cameron 1978 catalog weight=3 and ID = 365. The ALPO/BAA weight=3.
Aristarchus, Cobra Head, 1969 Dec 23 UT 05:19-05:34 Observed by A.R. Taylor (Buckinghamshire, UK, 8.5" reflector, 240x, Wratten 25 and 80B) Strong blink in crater at 0519. All traces gone by 0534. Could only see in filters, Plato, Copernicus, Gassendi all normal. Obscur. also in Cob. Head." NASA catalog weight=4. NASA catalog ID #1230. ALPO/BAA weight=3.
Stevinus 1961 May 29 UT 02:45-03:30 Observed by Cameron (Adelphi, MD, USA, 3.5" reflector, x160, Questar, Seeing=good) "Craters stood out like glittering points (small craters on rims?). Only anomalies among many features examined (specular refl. from flat surface?)." NASA catalog weight=4. NASA catalog ID #738. ALPO/BAA weight=1.
Furnerius 1961 May 29 UT 02:45-03:30 Observed by Cameron (Adelphi, MD, USA, 3.5" reflector, x160, Questar, Seeing=good) "Craters stood out like glittering points (small craters on rims?). Only anomalies among many features examined (specular refl. from flat surface?)." NASA catalog weight=4. NASA catalog ID #738. ALPO/BAA weight=1.
Eratosthenes 1976 Sep 08 UTC 04:29 Observed by Bartlett (Baltimore, MD, USA, 4.5" reflector 45-225x, S=5-4, T=5) "Psuedo-shadow X3 was present but X disappeared from wall(same intensity?) which was rated 4 deg. Disappearance of X so unexpected that he examined inner S wall very carefully & was certain it was free from psuedo-shad. Had vanished within 24h. Other pseudo-shadows showed no change. X reappeared next nite. (X must have been 4deg; &this is much higher than any other meas.). Variability of wall shadows may habe been what Pickering saw, suggests Bartlett." Cameron 1978 TLP catalog weight=4 and catalog ID 1452. ALPO/BAA weight=2.
On 1981 Apr 18 at UT 19:50-22:10 M. Mobberley (Suffolk, UK, using a 14" reflector, seeing poor and transparency poor) observed faint-yellow streaks still visible, but less prominent. Cameron mentions that Bartlett noticed this colour, but in the south floor of Aristarchus. Cameron 2006 catalog ID=133 and weight=3. ALPO/BAA weight=2.
Aristarchus 1973 Feb 15 UTC 17:07-19:31 Observed by Theiss (located at 51N 5.67E) "area 4-5 diameters of Aristarchus were coloured clearly yellow-red" 120mm reflector used. Ref Hilbrecht & Kuveler (1984) Moon and Planets Vol 30 p53-61. ALPO/BAA weight=1.
Plato 1973 Aug 13 UT 22:25-22:35 observed by Pedler (Devon, UK). Observer noticed a slight blink on a lighter patch on the floor just beneath the south(?) rim using Moon blink filters. ALPO/BAA weight=1.
David Darling observed bright glittering on Aristarchus. This was followed by a flare up in brightness at 00:38:05 UT in the comet-like ray area of the crater equivalent in intensity to the central peak. Then he saw another one on the north east rim of Aristarchus of the same brightness. A third flare was seen at 00:49UT in south of Herodotus, on the comet-like ray. Another two flares were observed at 00:56UT on the north west rim of Aristarchus. Darling suspects that these effects were due to seeing effects and Cameron agrees. However Weier suspects that they were TLP? Brightness measurements by Weier were for the south west rim of Herodotus 8.0, for a spot at the Cobra's Head 9.0 and 7.5 for C.H. Cameron apparently did not see the flashes but did suspect that the interior of Aristarchus was a bit unusual. Don Spain did not see anything unsual at all. Cameron 2006 extended catalog ID=380 and the observation weight=3. The ALPO/BAA weight=2.
Herodotus 1971 Dec 02 UT 20:40 Observed by Kilburn (Manchester, UK, 8" refractor, x130, Transparency very good with a thin mist, seeing excellent, x130). Bright point (considerably brighter than its surroundings) was seen on the SE of the illuminated floor of Herodotus in white light. It was quite close to the crater rim. The spot had no colour. ALPO/BAA weight=2.
Aristarchus 1967 Dec 16 UTC 22:00? Observed by Farrant (Cambridge, England, 8" reflector) "Crater took on an unusual appearance on inner NE (ast. ?) wall. Showed a very pale blue & the opposite wall a pale red color seen in no other features. Lasted only 10m & survived a change of eyepieces." Seeing=I (Antoniadi). NASA catalof weight=3 (average). NASA catalog ID #1056.
On 2002 mar 29 at 02:20-02:38UT C. Brook (Plymouth, UK, 60mm refractor, x120 - no cloud, slight haze, no wind, seeing good) noticed during first part of observing period that Aristarchus was getting steadily brighter, very much brighter than Proclus. This continued until 02:36UT when it dimmed suddenly over a period of about a minute or so. No colour effects seen. ALPO/BAA weight=2.
On 2002 mar 29 at 02:20-02:38UT C. Brook (Plymouth, UK, 60mm refractor, x120 - no cloud, slight haze, no wind, seeing good) noticed during first part of observing period that Aristarchus was getting steadily brighter, very much brighter than Proclus. This continued until 02:36UT when it dimmed suddenly over a period of about a minute or so. No colour effects seen. ALPO/BAA weight=2. Just as an after thought - was it Aristarchus that was varying, or Proclus?
Louderback, of South Bend, WA, USA observed a bright area over Mons Anguis and Eimmart - it resembled a comet and had a bluish colour and varied in brightness. The colour was confirmed as it was not seen in a red filter but could be seen in blue and white light. Other features were checked but did not show anything similar although a violet glare was suspected in the blue filter. A sketch was made. Observer made Eimmart 8 in brightness at 07:30UT. Noted that the area around Eimmart appeared opaque at times and less so at other times. At 08:52UT the phenomenon was seen again. On May 2nd a bright spot was still seen in the region but it was not changing dimensions. During the observation on Apr 30th the atmospheric transparency was excellent. A 2.5" refractor was used. Reference: Personal communication from Louderback to Cameron on 1980 Jul 16th. The Cameron 2006 catalog extension ID of this TLP was 93 and the weight was 4. ALPO/BAA weight=3.
On 1970 Nov 14 UT20:10 J.Coates (Burnley Astromical Society, 8.5" reflector, x102 and x204) saw a dirty green colour on the NW region of the crater, in patches, with a green area nearby. ALPO/BAA weight=1.
Enhancement of spectrum in UV and CaI recorded on photoelectric spectrometer scans by Grainger and Ring in Italy. Effect seen on Aristarchus. Cameron 1978 catalog ID=740 and weight=5. ALPO/BAA weight=5.
Aristarchus 1962 May 20 UTC 08:00? Observed by Wildey, Pohn (Mt Wilson, CA ?, 60" reflector? Photometer) "Reddish color in Aris. 0.88 magnitudes brighter than normal (photometry)." NASA catalog weight=5 (very good). NASA catalog ID #758. ALPO/BAA weight=3.
Bullialdus 1962 May 20 UTC 08:00? Observed by Wildey, Pohn (Mt Wilson, CA ?, 60" reflector? Photometer) "1.05 magnitudes brighter than normal (photometry)." NASA catalog weight=5 (very good). NASA catalog ID #758. ALPO/BAA weight=2.
Kepler 1962 May 20 UTC 08:00? Observed by Wildey, Pohn (Mt Wilson, CA ?, 60" reflector? Photometer) "1.03 magnitudes brighter than normal (photometry)." NASA catalog weight=5 (very good). NASA catalog ID #758.
1969Jan04 UT19:30-20:00 W.Deane (Hendon, UK, 2" refractor) observed a bright yellow spot just E of Aristarchus, stretching from the S. end of Montes Harbinger to the S. wall of Prinz. The ALPO/BAA weight=1. ALPO/BAA weight=1.
On 1984 Feb 18 at 05:35UT Moseley (Coventry, UK, 6" reflector, x120, seeing II-III, transparency very poor to good) found that the crater was difficult to define. However observing conditions variable. P. Moore observed that the crater was normal at 04:00UT. Moseley found the crater well defined later. Cameron 2006 catalog extension ID=242 and weight=3. ALPO/BAA weight=1.
Aristarchus 1969 Dec 26 UT 03:35-03:45 Observed by Kilburn (England, 6" x192) "Suspected faint blink & glow outside of SW(IAU?) wall. Large area was gray toward Herod. Another blink inside between 2 bands at0330h. At 0345h neither blinks seen. Blink seen in blue (=red event?). Next nite crater was normal." NASA catalog weight=3 (average). NASA catalog ID #1231.
Plato 1971 Dec 05 UT21:00-21:10 D.B.Taylor (Dundee, UK, 10" refractor, conditions poor and turbulent). Observer suspected colour orange colour near bright spot on north wall. Observation ceased due to being clouded out. ALPO/BAA weight=1.
Aristarchus 1968 Dec 07 UT 07:00? observed by Corralitos Observatory (Organ Pass, NM, USA, 24" reflector+Moon Blink) "Bluing around 3 craters, strongest at Aris. Lasted several days. Photos show 30% more intensity in blue filter than in red or neutral. Moon's declination northerly. Obs. think it was due to atm. effects" NASA catalog weight=5 (very high). NASA catalog ID #1105.
On 1968 Dec 07 at UT 07:00? Corralitos Observatory (Organ Pass, NM, USA, 24" reflector and Moon Blink device) observed a bluing around three craters, one of which was Kepler. This effect lasted several days. Photographs were taken that show30% more intensity in the blue filter than in red or neutral. The Moon's decination was northerly. The observers suspect that it was an atmospheric efect and not a TLP. The Cameron 1978 catalog ID=1105 and the weight=5. The ALPO/BAA weight=3.
Near Bacon, Barocius, Nicolai i.e. 16E-25E, 52S-42S 1878 Nov 13 UTC 02:30 Observed by Hammes & others (Oskaloose, Iowa, USA, 6.5" reflector) "Lunar volcano (drawing) (investigation & correspondence cast doubt on location)" NASA catalog weight=? NASA catalog ID #208.
LeCroy Jr. and Sr. (Springfield, VA, 4.5" reflector, x75, S=VG, T=3) observed the following in the Aristarchus and Herodotus region: "Prior to 0542h the 2 craters were 2 bright spots within bright areas. Then a brightness developed merging them together into one big bright area with no discernable details. Returned to normal at 0554h. Sketches. Albedo=10+ where normal albedo is 9.5". The Cameron 1978 catalog ID= 1413 and weight=4. The ALPO/BAA weight=3.
On 2006 Dec 08 at UT 17:32 (+/- 2 min) M. Collins (Palmerston North, New Zealand, 3.5" Maksutov, 40mm eyepiece, seeing III-IV) observed during daylight hours an extremely bright flash south of Godin. It flared up and down over a fraction of a second an appeared three times brighter than the Moon background itself. The ALPO/BAA weight=1.
In 1824 Oct 18 at UT 05:00 Gruihuisen (Munich, Germany) observe near Aristarchus a mingling of all kinds of colours in small spots North west of the crater. Cameron suggest the wrong date and suggests seeing her TLP ID No, 121). The Cameron 1978 catalog ID=101 and the weight=4. The ALPO/BAA weight=3.