On 1982 Jul 09 at UT 01:05-01:25 P. Moore (Selsey, UK, 12.5"? reflector, seeing III) found that Aristarchus was very bright and slightly blue. Cameron comments that Moore's eyesight is not very blue sensitive. The Cameron 2006 catalog ID=175 and weight= 4. The ALPO/BAA weight=2.
On 1982 Jul 09 at UT01:05-01:25 P. Moore (Selsey, UK, 12.5" reflector, seeing=III) found that Grimaldi A was the 2nd brightest feature on the Moon, and that there was colour detected with a Moon blink device on the floor of Grimaldi. The Cameron 2006 catalog ID=175 and the weight= 4. The ALPO/BAA weight=3.
Area of darkness overlapping NW rim. It was visible through this area of obscuration. Sketch. Cameron 2006 extended catalog ID=376 and Cameron weight=3. ALPO/BAA weight=2.
Macrobius 1898 Dec 31 UTC 20:00 Observed by Goodacre (Crouch End, England, 12" reflector) "Interior nearly filled with shadow at sunset. Inner E.wall very bright-a distinct penumbral fringe to black shad. cast on it from W.wall. Seen best using high powers. (Firsoff & MBMW give date as just 1895 but must be wrong-phase - see app.ref.)" NASA catalog weight=4 and catalog ID #304. ALPO/BAA weight=2.
On 1989 Aug 20 at UT13:55 M. Lucas (Melbourne, Australia, naked eye) witnessed a "pin-point flash" in the middle of the lower right quadrant of the Full Moon. Foley suspects that this was in the Proclus region? The Cameron 2006 catalog ID=374 and the weight=2. The ALPO/BAA weight=2.
On 1989 Jan 26 at UT 03:45 De Groof (Belgium) noted a white few second long flash from Copernicus crater. The Cameron 2006 catalog ID=347 and weight=3. The ALPO/BAA weight=3.
Aristarchus 1969 Sep 30 UT 04:46-05:10 Observed by Maley, Saulietis (Houston, TX, USA, 16" reflector, x130) "Intermittent blue color on SE wall, verified by others. At 0500h, taking 10s to reach max. then slowly disappeared. Gap appeared after 1st event. Drawing." NASA catalog weight=4. NASA catalog ID #1202. ALPO/BAA weight=4.
On 1964 Feb 02 at UT08:30-09:40 G.Reneau and B.Crowe (2.4" refractor, x90)observed Ross D to be double. This was during a time when observers were looking for a Ranger crash plume. The Cameron 1978 catalog ID=799 and weight=1. The ALPO/BAA weight=1.
On 1983 May 31 at UT03:45-04:30 K. Marshall (Medellin, Columbia) noted that the whole area of Aristarchus, Herodotus, and Schroter's valley was both blurred and violet. There was hardly any detail seen inside the crater. Herodotus could hardly be seen either and Schroter's valley was totally unrecognizable. A sketch was supplied. The Cameron 2006 catalog ID=223 and the weight=3.
On 1895 Sep 07 an unknown observer (Lewis Swift?) observed a pale blue segment on the upper limb - this was apparently confirmed by Faulkes (Mem. BAA, 1895). Cameron says that this is probably 1895 Sep 08 at UT 06:00 as Sep 07 is local time. She also infers that "upper limb" is the southern limb and that Swift was at the Lowell Observatory, Flagstaff, AZ, USA. The Cameron 1978 catalog ID=285 and weight=5. The ALPO/BAA weight=2.
On 1991 Jul 31 at UT 07:50 D. Louderback (South Bend, WA, USA, 3" refractor) observed that the south floor of Aristarchus was wellow - "almost gold, spilled over S wall on ray toward Herodotus". Cameron comments that Bartlett often reported a yellow floor but not a spill of the colour over to the external ray. Cameron also comments that Louderback's refractor would refract more in blue light than in yellow, therefore she did not think that it was due to chromatic aberation. The Cameron 2006 catalog ID=431 and the weight=3. The ALPO/BAA weight=2.
On 1991 Jul 31 at UT 07:50 D. Louderback (South Bend, WA, USA, 3" refractor) found that all of Mons Piton was "unusually dark". Points D, C (E and S resp), usually brightest points, but this time were not bright. "Whole mt was as dark as W wall usually is at this time. In violet filter Piton disappeared completely, but was a little brighter in red filter and points D & G showed. Color not seen by eye. No albedo measured. Suggests red event." Cameron rules out chromatic aberation from Louderback's refractor. The Cameron 2006 catalog ID=431 and the weight=3. The ALPO/BAA weight=1.
Aristarchus 1975 Nov 15 UT 06:34 Observed by Rule (Edinburgh, Scotland, 4" reflector x36) "Blue patch in crater (similar to many of Bartlett's obs.?)" NASA catalog weight=2 (low). NASA catalog ID #1383.
On 1985 May 09 at UT 22:50-03:10 P. Foley (Kent, UK) observed the whole of Aristarchus to be a strong violet color. No colour was seen elsewhere on the Moon. The Cameron 2006 catalog ID is 272 and the weight is 2. The ALPO/BAA weight is 2.
On 1985 May 09/10 at UT 22:50-03:10 P.W. Foley (Kent, UK) found that Torricelli B was very bright in Earthshine and was blue in colour. The Cameron 2006 catalog ID=272 and the weight=2. The ALPO/BAA weight=2.
Plato 1975 Jun 29/30 UT 23:05-00:30. Foley (Wilmington, UK, 12" reflector, seeing, III, good clarity transparency). At 23:05, blue was seen on the inner wall:floor southern boundary, and red on the corresponding northern floor:wall boundary. However by 00:30, blue was now on the W floor:wall boundary, and red on the E floor:wall boundary. Atmospheric spectral dispersion existed in many regions, but did not change like the colours in Plato. Similar appearance craters such as Grimaldi, Schickard, and Riccioli, were checked for a similar change in colour, but no change was noticed in these. ALPO/BAA weight=1.
On 1987 Oct 13 at UT14:00-17:00 J. Moeller (Kirkville, NY, USA, 6" reflector) observe and 10x70 binoculars) noted that Aristarchus was brilliant in the sky and the most striking feature on the lunar surface (2-3x brighter than Tycho). It appeared as a hazy white cloud at first. The effect lasted for 3 hours. The Cameron 2006 catalog ID=309 and the weight=1. The ALPO/BAA weight=1.
Marcus Price (Camberley, Surrey, UK) noted that Aristarchus was extremely bright. A 6" reflector was used. The Cameron 2006 Catalog ID is #98 and the weight is 1. The ALPO/BAA weight is 1 too.
On 1991 Dec 28 at UT 02:10 P. Moore (Selsey, UK) could see no detail on the floor of Plato crater. This report needs to be read in context with the comments by Cameron for A.C. Cook's observation of the floor of Plato on 1992 Jan 18 - Cameron 2006 catalog ID=438.
On 1974 Jun 12 at UT0256 an unknown observer noted a dark blob on the northern edge of the floor of Pitatus crater.
On 2012 Oct 08 UT12:00 C. Hastorf (Chuck's Bobcat, AZ, USA, 5" SCT, seeing 3.5-4 out of 5). Strange lightness seen on shadowed floor of Plato. ALPO/BAA weight=1.
Aristarchus 1980 Aug 04 UT 11:40-11:53 Observed by Jean Nicolini (Campinas, SP, Brazil, 6" reflector and 12" reflector) "Red glow seen on SE exterior of Aristarchus". ALPO/BAA weight=2.
Grimaldi 1972 Aug 02 UT 23:42 Observed by Taylor, Findlay, Ford (Dundee, Scotland, 10" refractor, x180, filters) "Blink in crater, slight but definite on W. wall. Appeared bright without filters. Confirmed by Findlay & Ford. Aris., Gass. & prom. Heraclides were normal." NASA catalog weight=5. NASA catalog ID #1339. ALPO/BAA weight=4.
Grimaldi 1998 Mar 22 UT05:15-06:00 S. Beaumont (Windermere, UK, 127mm rich field refractor, seeing III, transparency Good) observed that the northern half of Grimaldi seemed much lighter than the southern half. She comments that she has seen this before in last quarter phases, but it was really quite marked how lighter the northern half was on this occasion. The ALPO/BAA weight=1.
Aristarchus 1976 Oct 18 UT 07:42 Observed by Bartlett (Baltimore, MD, USA, 4.5" reflector and 3" refractor, S=3, T=5) "Inner E. wall 6 deg with very large EWBS at 8deg. No viol. color anywhere & floor was gray at 4 deg (very low). C.p. is only 8 deg. At base of c.p. between peak & advancing shadow a very faint but definite red glow was seen. It was also seen later in the 3" refr. Was confined to W.base of peak & no color on E. base tho. carefully searched for. This red glow was unique in his experience of 28 yrs. His obs. thru. col. 223deg saw nothing more unusual." Cameron 1978 catalog weight=4 and ID #1455.
On 1977 Sep 17 at 16:30UT V.M. Chernov (Soviet Union) observed the northern cusp of the Moon to be elongated more than 180deg ashen light. This was 4.3 days after new Moon. The ALPO/BAA weight=1.
On 1982 May 27 at UT 17:05-17:35 E.V. Arsyukhin (Moscow, Russia, 3" reflector) found Endymion had a dark spot in the middle for about 30 min. The Cameron 2006 catalog ID=169 and weight=3. The ALPO/BAA weight=2.
On 1982 May 27 at UT 17:05-17:35 E.V. Arsyukhin (Moscow, Russia, 3" reflector) found Lacus Sominorum was very bright, misty and the colour varied. It was back to normal on the 28th and abnormal on 29-31st. - had a dark spot in the middle for about 30 min. The Cameron 2006 catalog ID=169 and weight=3. The ALPO/BAA weight=2.
On 1989 Feb 10 at UT 19:00? D. Holmes and Wooler (Lancashire, UK) found area near Prinz to be bright, but so too was Aristarchus crater. The Cameron 2006 catalog ID=350 and weight=3. The ALPO/BAA weight=1.
On 1989 Feb 10 at UT 19:00? Edmonds (England) observed a "bright red coppery" colour in the northwestern part of Proclus crater. He checked and found that there was no colour elsewhere, though he still suspects that the effect was spurious colour. Cameron comments that usually blue is seen in the north and red in the south if due to spurious colour. The Cameron 2006 catalog ID=350 and the weight=3. The ALPO/BAA weight=1.
A faint white pinpoint flash seen and also in the same position a whitish glow around the crater. No futher flashes seen after the first one. From UT2117-2130 the glow was still visible but faded making it more difficult to locate. When Foley observed he found Aristarchus not very visible in Earthshine, despite Plato, Grimaldi, and several other features being visible. Both observers used 12" reflectors. Cameron's 2006 catalog Extension ID=124 and weight=0. ALPO/BAA weight=3.
On 1985 Apr 25 at UT 21:34-22:04 H. Miles (England) observed Aristarchus within Earthshine. Foley (Kent, UK, 12" reflector) had observed it one hour prior to Miles and found it to be both dull and blue - with a bright patch west of the crater on Aristarchus Upsilon Mountain. At 21:45UT 6 star-like flashes seen on the floor. They occurred again a few minutes later and repeated at 22:04UT.By 21:45UT the bright patch had gone though. Smith (England) had also apparently seen the flashes and a further glow, albeit more north of the one seen by Foley. Miles confirmed Smith's glow north of Aristarchus. Peters did not see much, indeed found Aristarchus to be quite faint (2130-2141). The Cameron 2006 catalog ID=264 and the weight=3. The ALPO/BAA weight=2.
Curious lack of detail, but this may have been related to the seeing. Of greater interest though was a dark blue splodge where the crater should have been. Shadow seen through this splodge, but no crater rim seen.
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.
In 1948 Apr 15 at UT 20:00? Vince (England, UK) observed a bright spot, about magnitude 3, in Earthshine, about 30deg north of Grimaldi., on the west limb (90W, 25N). The Cameron 1978 catalog ID=503 and the weight=3. The ALPO/BAA weight=3.
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 1895 Sep 25 at UT 20:00? Gaboreau (Paris, France) observed on the Moon s shaft of light (same observation as Cameron's TLP report #281 and further more it is on the same day and month as it was back in 1893. The Cameron 1978 catalog ID=286 and weight=0. The ALPO/BAA weight=1.
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.
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.
2004 Nov 20 UT 01:43:36 R. Spellman (120mm F8.3 refractor at prime focus, PC23C CCTV camera, via a DVD recorder) recorded a flash of light. The ALPO/BAA weight=1.
2004 Nov 20 UT 02:34:03 R. Spellman (120mm F8.3 refractor at prime focus, PC23C CCTV camera, via a DVD recorder) recorded a flash of light. The ALPO/BAA weight=2.
On 1973 Dec 02 at UT 22:17:33 Barrett and Brick (New York, 3.5" Questar freflector) observed an occultation of Kappa Aquari, a wide double star, on the western limb. The star faded perceptably before disappearing. Cameron says that the fact that the star was a double was not an explanation - she says that there are many reports of similar fades for single stars. The Cameron 1978 catalog ID=1384 and weight=4. The ALPO/BAA weight=1.
2004 Nov 20 UT 03:12:29 R. Spellman (120mm F8.3 refractor at prime focus, PC23C CCTV camera, via a DVD recorder) recorded a flash of light. The ALPO/BAA weight=1.
Ptolemaeus 1978 Apr 15 UTC 21:54-22:20 Observed by A.Cook (Frimley, Surrey, UK, 12" reflector x240, S=IV (Antoniadi)) "Small triangular area on the NW floor of the crater, at the foot of the rim, was slightly brighter in blue light than in red (Moonblink used). Suspected this was due to the poor observing conditions. Certainly blink reaction was not unmistakable". ALPO/BAA weight=2.
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.
1996 Apr 27 UTC 02:26-03:14 Observed by Spellman (Los Angeles, CA, USA) " 02:26 U.T. Sunrise on Tycho 3/4 of the crater was in shadow, topmost section of the central peak was in sunlight. In white light brightness of the central peak rivaled the brightness of the Eastern (sunlit) wall. No change was detected in red light, however in blue light definite strong darkening was observed. Blink obtained when viewing thru 25A and 38 filters. At 2:52 U.T. in the poor to fair seeing the apparent size of the central peak in white and red light was the same, in blue light the central peak in white and red light was the same, in blue light the central peak size shrank to 1/2 white and red size (and brightness). Also appearing sharper. Comparison was made also with the central peak of Alphonsus, no changes were observed. The significant part of the observation was the relative brightness of the central peak to the sunlit rim in white and red light, they appeared almost identical with the crater rim, being just slightly brighter. In blue light the brightness of the central peak was reduced by at least half while the rim brightness was not, (relative to one another). I strongly believe that this was a real event. The shadow filled portion of Tycho was examined for any abnormalities but none were observed. Observations were ended shortly after 3:14 U.T. due to clouds. I also conducted about 20 Moon blink observations during this observing run and got the same strong reaction each time." ALPO/BAA weight=3.
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.
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 (Winnersh, 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 just detectable 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=1.
Piton 1958 Sep 23 UT 00:00? Observed by Moore? (UK?) "Enveloped in an obscuring cloud-like mist" NASA catalog ID 697. NASA catalog weight=2. ALPO/BAA weight=2.
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.
Cichus 1975 Sep 15 UT 11:15-11:30 G.Ryder (Corinda, Australia, 25cm reflector, x250 & x380, seeing good but with some cloud) The interior W. wall of this crater (on the lip) appeared hazy - difficulkt to bring detail into focus. Neighbouring craters/detail were sharp. Details in the crater wall interior were starting to become visible as time went on, but it had clouded over by 11:30. A Moon Blink was used but no colour was detected. ALPO/BAA weight=1.
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.
A region of the Mare Imbrium was extremely bright, giving a reading of 8 out of 10 on the Elger scale. Cameron notes that from photos of the Full Moon, the area appears to normally be the brightness of Archimedes floor i.e. 3.5 out of 10 on the Elger scale. Atmospheric seeing was excellent and the observer could see a lot of fine detail with their 2.4" and 3" refractors. Cameron 2006 catalog extension ID=62 and weight=3.
M.C. Cook (Frimley, UK) got an abnormally low brightness reading for Proclus, despite nearby Censorinus being normal. Crater Extinction Device used. The Cameron 2006 Extension catalog ID was 163 and the weight was 3. The ALPO/BAA weight was 2 too.
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.
Ross D vicinity 1964 Apr 22 UT 05:43-0637 Observed by Cross et al. (Whittier, CA, USA, 19" reflector, x800-1200 & filters, S=7- 8, T=1) "Gas cloud over it & its companion; everywhere else was fine detail" NASA catalog weight=5. NASA catalog ID #809. ALPO/BAA weight=3.
Daniell 1979 Jul 04 UT 20:40-21:19 Observed by Saxton (UK?, 216mm refractor?, seeing III, transparency: Good) "noticed that the east end of Daniell was bright and fuzzy and had somewhat poorly defined edge to the bright part. A sketch was made, and possibly shows the same as in past reports" BAA Lunar Section Report. Cameron 2006 extension catalog ID=59 and weight=3. Observer located in Leeds, England and used a 9" reflector x250. Seeing=III and transparency=good. ALPO/BAA weight=2.
In 1820 Oct 17 at UT 20:00 an unkown observer reported in Mare Imbrium, south of Sinus Iridum (30W, 40N) some brilliant spots. The Cameron 1978 catalog ID=80 and weight=1. The 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.
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.
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.
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.
Plato 1982 Jun 02 UT 22:00. Mobberley could not see the central craterlet on the floor of Plato tonight. Foley notes that he could only just see the central craterlet on nights of 2-5th Jun and it was of reduced in brightness from normal. North reported that the floor seemed nearly black, but brighter in a green filter (x144 magnification used). All three observers compared the Plato area to other areas for reference. All the above seems normal, apart from the floor being brighter in the green filter. Cameron 2006 extension catalog ID 170 and weight=5. BAA/ALPO weight=1.
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.
On 1990 Jan 07 at UT 20:20-20:58 G.North (Herstmonceux, UK) thought that he detected dullness in Torricelli B crater - Cameron comments that this cannot be shadow). The Cameron 2006 catalog ID=386 and the weight=3. ALPO\/BAA weight=2.
Brilliant blue color seen at first for seconds, later for min 2h later, in blue filter. Cameron 1978 catalog weight=4 (high). Cameron 1978 catalog ID 572.
Tycho 2971 Nov 28 UT 21:58-22:05 observed by D.B. Taylor (Dundee, UK, darker area inside the crater (NE and SE floor) in a Moon Blink device. However the observer does not report through which filter ir was darker. ALPO/BAA weight=1.
Plato 1971 Oct 30 UT 19:35-20:55 E.Watkins (Braintree, UK, 4.5" reflector, x45,x150, x225), thought he saw a faint patch at 19:35 and it still was visible at 19:40. At 19:50-19:55 he saw what may have been the remainder. At 20:55 he noticed a shadow in the area. ALPO/BAA weight=1.
On 1933 Oct 01 at UT 03:00 Rawstron (USA, 4" refractor, x330) observed the following in Mons Pico B: "Haze -- much narrower & elongated than on Sep. 1". The Cameron 1978 catalog ID=407 and weight=3. The 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.
Deslandre - 1965 May 12 at UT 19:10 E. Penzel (Rodewisch, East Germany) was taking a sequence of images during the impact of the Soviet Lunik 5 (upper stage of the carier rocket?). He detected a tens of km scale elongated cloud after the impact over a duration of 9.5 minutes. This was near to Deslandre crater. However there are differences between the images elsewhere on the Moon, possibly due to different exposures or some other effects and it is not 100% sure that what he detected was impact debris/cloud?. The ALPO/BAA weight=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.
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 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.
Observed by Haas (Las Cruces, NM, USA) "Temporary greyness seen in interior shadow." ALPO/BAA weight=3.
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 1965 May 12 at UT 22:20 H. Miles (UK) found a possible obscuration in Bailly crater. Most of the region was as sharp as normal, but the central area was greyish and blurred. Although the observer concerned considered themselves a non-experienced observer, another BAA Lunar Section observer saw the same effect. ALPO/BAA weight=2.
Aristarchus Area 2004 Nov 22 UT 04:58-05:49 Observed by Gray (Winemucca, NV, USA, 152mm f/9 refractor, seeing 4-5, trasparency 4-5, x114, x228) "Blinked Herodotus with Wratten filters Blue 38A and Red 25. The illuminated west crater wall stood out brilliantly in blue light, much more so than in white light. This was true also of Aristarchus. Red light did not increase contrasts in Herodotus any more than they were in white light. Shadows in Herodotus appeared as black as the night west of the terminator and remained that way throughout the observing period. No TLP seen in Herodotus tonight. A possible TLP was seen to the west of Herodotus near the terminus of Schroters Valley. It was noted at the beginning of the observing period that there were four very bright spots of light, one near the end of Schroters Valley, the other three grouped together a little farther north. Although not far from the terminator they were definitely east of it. It was noted that all of them nearly vanished in the Blue 38A filter while Aristarchus and the rim of Herodotus gleamed brilliantly. At 5:19UT it was noted that the most brilliant of the four lights, the one near the terminus of Schroters Valley, had faded almost to invisibility in white light. When first seen it had been brighter than Aristarchus. It remained very dim after this through the remainder of the observing period, and was unchanged at 7:35-7:49UT when I again examined the area. The other three bright spots remained brilliant and unchanged."
Aristarchus 1973 Aug 10 UTC 20:14 observed by Baumeister (48.63N, 9.25E, 110mm reflector, T=2, S=2) "Orange to red colours at the crater floor disappeared until 21:04" - Hilbrecht and Kuveler, Earth, Moon & Planets, 30 (1984), p53-61. ALPO/BAA weight=2.
Plato 1973 Aug 10 UT 22:45 observed by Robinson (Devon, UK). Observer noticed that the lighter areas on the floor were more distinct in red than in the blue filter. ALPO/BAA weight=1.
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.
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.
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.
Proclus 1972 Dec 17 UTC 18:30 Observed by Farrant (Cambridge, England, 8.5" reflector) "Crater appeared very bright (Apollo 17 Watch)." NASA catalog weight=2 (low). NASA catalog ID #1359.
Blanco, J. Vidal, of Gijon, Spain (3" refractor x72) noticed an unfamiliar very bright center near to Encke. Cameron suspects that this was Encke B crater on the basis that it is a prominent small crater near to Encke. Cameron 2006 catalog extension ID=410 and weight=2. ALPO/BAA weight=1.
Daniell 1979 Jul 06 UT 21:15-22:30 Crick (Belgium, 6" reflector, Seeing=II and transparency=good.) noticed obscuration on a bright spot on the south east wall. This spot was quite prominent through a red Wratten 25 filter. The floor was very dark. Other craters were checked and were normal. A sketch was supplied and the position was the same as in other earlier reports. Cameron 2006 catalog extension ID=60 and weight=3. ALPO/BAA weight=3.
Plato 1987 Feb 10 UT 21:05-22:10. M. Cook (Frimley, UK), "NE ray distinct & also floor E of it, not distinct as on Dec 13 & Jan 11, while March 10, 11 & 12 seen by Price, North, Peters, Foley & M Cook, where rim was clear and sharp." - quote from the 2006 Cameron Catalog extension - TLP ID=297 and weight=5. Cameron gives the observers confirming this TLP as: M. Cook, G. North and Davies. ALPO/BAA weight=2.
In 1949 Nov 03 UT 01:06 J.Bartlett (3.5" refractor, x100) noted that the floor of Herodotus was very dark, the east wall was very bright, and the floor contained a central bright peak. The BAA/ALPO weight=3.
Kepler 1954 Nov 07 UT 23:20 Observed by F.A. Lugo (Caracus, Venezuela, 3.5" scope x125) Bright red star=like point just outside E.wall - visible for an hour. NASA catalog weight=3. NASA catalog ID #580. ALPO/BAA weight=3.
Aristillus 1972 Dec 17 UTC 21:50-22:20 observed by Berger (51.5N, 9E, 60mm refractor, T=2, S=3) "Diffuse bright cloud in the NE corner of the crater" - Hilbrecht and Kuveler, Earth, Moon & Planets, 30 (1984), p53- 61.
On 1993 Sep 28 at UT 04:30-06:10 S.Beaumont (Cambridge, UK)observed that the north east edge of Herodotus appeared as a "highland area spilling over into" the Cobra's Head border or "overlook". The shadow on the elevation was contiguous with a similar shadow over the Cobra's Head "like a darkening of the terrain. Shadow appears softer diffused without sharp bounds of most Lunar shadows. sketch. S. edge of crater started to appear at 0615". The Cameron 1978 catalog ID=468 and the weight=2. The ALPO/BAA weight=1 as the date or UT are wrong.
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.
Vallis Schroteri 1991 Aug 23 UT 02:19-02:49. 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.
Amery (Reading, England) saw blue in Aristarchus but a photograph did not show the colour. Foley thinks this was spurious colour. Cameron 2006 extension catalog ID=27. ALPO/BAA weight=1.
Promotorium Laplace: 1978 Apr 20 UT19:30-22:35 Peter Foley observed a tiny yellow-brown region close the tip of the cape, north east of the precipitous west edge, in the face of the north facing slope. The area concerned was diffuse and varied in density despite the surroundings not varying. Foley notcied no colour elsewhere on the Moon, though Amery thought that he saw some in Aristarchus, but Foley thinks this was spurious. Cameron 2006 catalog extension ID=27 and weight=5. ALPO/BAA weight=3.
Aristarchus-Cobra Head, 1967 Nov 15 UT 05:40-06:00 Observed by Cross, Tombaugh (Las Cruces, NM, 12" reflector x800) and Harris (Tucson, AZ), and Dunlap (Organ Pass, NM, 24" reflector with Moonblink). "Obs. reddish color N. & E. of Aris. & more intense color nr. E.(IAU?) rim of Cobra Head. Red color nr.C.H. confirmed by Tombaugh. Obtained 10 photos between 0543-0549h in 3 spectral bands (blue, yellow, red, & integ. light). No change dur. obs. per. but spot got smaller at moments of good seeing. Isodensitometry of photos. At Corralitos 0152-0155 on 24- in image intensifier & filter sys. photoos at 0320-0330h. Harris at Tucson got spectra. Neither of latter 2 show anything unusual. Its edges were nebulous even at best seeing. Size @ that of Cobra's Head." NASA catalog weight=5 (very good). NASA catalog ID #1053.
Peter Foley (Kent, UK, 8" reflector, seeing=II) noticed that the floor beneath the north wall, and the area over the north wall were indistinct (almost out of focus). Despite looking elsewhere in the crater and surrounds, no other blurring (obscuration of detail) could be seen, indeed everywhere else was sharp and detailed. Foley tried several eyepieces but this made no difference. He used a crater extinction device but found no variations in brightness. There was a slight darkening when he used a red filter in the Moon Blink device. The obscuration effect weakened between UT20:56 and 21:10, was difficult to see at 21:13 and had finished by 00:15. Patrick Moore (12" reflector, Dublin, Ireland) saw nothing unusual when he started observing at UT 22:00. Cameron says "Photos marked at location of phenomenon". Cameron 2006 extension catalog ID=37 and weight=5. ALPO/BAA weight=3.
On 1821 Jan 16 at UT 21:00 S. Cooke (Stonehouse, UK) An effusion of smoke effect, which lasted about a minute, seen. It appeared like the fluttering of a bird and passed over the Moon before it evaporated, and must have been foreshortened, as it seemed in effect to have passed over the whole disc, starting from west of Menelaus, and near Plinius. ALPO/BAA weight=1.
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.
Aristarchus normal in red and blue filters however the Cobra Head part of Schroter's Valley was brighter in blue. Indeed it was very dull in red - Louderback says that this was not surprising as the whole areas around Aristarchus is brighter in blue. Louderback is an experienced observer of the Aristarchus area of more than 10 years. Cameron 2006 extended catalogID=63 and weight=1. ALPO/BAA weight=1.
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.
Plato 1873 Apr 10 UTC 21:00? Observed by Schmidt (Athens, Greece, 6" refractor) "Under high sun, 2 faint clouds in E. part of crater."
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.
Gassendi 1976 Oct 04 UT 21:30 P. Moore (Selsey, UK, x400, seeing poor) observed redness in the c.p. area. The ALPO/BAA weight=1.
Madler 1940 Aug 17 UT 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=5.8 on this date but 8.9 on Aug. 17, when observing conditions 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 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.
The area west of Helicon not visible despite the area being fairly bright at Full Moon time. This area was a very bright patch one night. Cameron notes: comensurability of Full Moon & Perigee. Cameron 2006 catalog extension ID=64 and weight=3. Seeing=7 and transparency=4. 2.4" refractor used. ALPO/BAA weight=1.
Aristarchus 1989 Oct 13 UTC 21:00 Observed by Cook (Frimley, Surrey, UK, 20cm reflector (visual and video)) "Aristarchus had what appeared to be a outline of a ghost crater on it's eastern side - quite large and bright". Cameron 2006 extended catalog TLP ID No=378 and weight=5. ALPO/BAA weight=4.
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.
On 1982 Jun 05 at 22:00? UT, Chapman (UK, using a 12" reflector), again using a x2 yellow filter, noticed that the central craterlet detectabilty changed such that sometimes it was visible and sometimes not. Foley (Kent, UK)noticed that the central craterlet could only just be seen between June 2 to June 5 and was much less discernable than during the previous lunation. No CED brightness measurements made. The floor of Plato was noted to be very dark though. Cameron 2006 catalog ID=172 and weight=4. ALPO/BAA weight=2.
Aristarchus 1965 May 15 UTC 01:40-02:15 Observed by Weresuik, McClench, Johnson (Pt. Tobacco, MD, USA, 16" reflector x240, S=F, T=G) and Delano (Massachusetts, USA, 12" reflector). "Crater had color(red?) detected by Trident MB & photos were obtained. There were pulsations. Delano saw E. wall of crater unusually bright (confirm. if at same time)." NASA catalog weight=5 (very good). NASA catalog ID #876.
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.
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 1992 Oct 10 at 18:57-19:04 UT I.S.Brukhanov (of Minsk, Belarus, using a 6" refractor x40 and x98) saw a star like point inside Plato crater of similar brightness to the central peak of Alphonsus. The event lasted 90 seconds before weakening and vanishing completely at 19:04UT. Cameron 2006 catalog extension ID=455 and weight=3. ALPO/BAA weight=3.
Aristarchus area 1955 Sep 30 UTC 20:45 Observed by Firsoff (Somerset, England, 6.5" reflector, x200) "Area showed a westward yellow smear, looked darkish in red, indicating presence of green." NASA catalog weight=4 (high). NASA catalog ID #614. ALPO/BAA weight=3.
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.
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 1978 Aug 18 at UT 22:00 Coates (England?, UK, 3" refractor, seeing=II) found that the inner bands of Aristarchus were hard to see, this was odd because the seeing conditions were good and he usually sees them? However he did not believe that there was any obscuration going on. The Cameron 2006 catalog ID=37 and weight=0. The ALPO/BAA weight=1.
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.
Proclus 2002 Mar 29 UT 05:27-05:36 Observed by Darling (Sun Praire, WI, USA, 12.5" f/5 Newtonian, +Rotating polaroid visual densitometer) "Observations made following telephone alert call about Brook's report. Aristarchus, Proclus and Censorinus monitored for brightness variations from 04:41-05:37UT. Apart form a change in transparency due to cirrus cloud at 05:11-05:18, there were significant dimmings of the brightnesses of Proclus at 05:27. Aristarchus remained constant - this suggested that Clive Brook's earlier report was not a TLP in Aristarchus, but possibly in Proclus which he was using as a comparison" ALPO Lunar Section Report. ALPO/BAA weight=3.
Censorinus 2002 Mar 29 UT 05:27-05:36 Observed by Darling (Sun Praire, WI, USA, 12.5" f/5 Newtonian, +Rotating polaroid visual densitometer) "Observations made following telephone alert call about Brook's report. Aristarchus, Proclus and Censorinus monitored for brightness variations from 04:41-05:37UT. Apart form a change in transparency due to cirrus cloud at 05:11-05:18, there were significant dimmings of the brightness of Censorinus at 05:36UT. Aristarchus remained constant" ALPO Lunar Section Report. ALPO/BAA weight=3.
Manillus 1955 Aug 03 UTC 21:00 Observed by Firsoff (Sommerset, England, 6.5" reflector, x200) "Maniluus very bright in all colors, especially blue, extraordinarily so" NASA catalog weight=4 (good). NASA catalog ID #602.
Timocharis 1955 Aug 03 UTC 21:00 Observed by Firsoff (Sommerset, England, 6.5" reflector, x200) "Crater was bright in blue, seemed large & diffused." NASA catalog weight=4 (good). NASA catalog ID #602.
On 1978 Aug 19 at UT02:45-04:00 Porter (Naragansetts, RI, USA, using a 6" reflector, Seing = 6/10) noticed blue on the north east corner of Aristarchus and an orange glow on the south east wall. They detected no movement or change in brightness. The observer used both eyes, to make sure it was not an eye defect, and three filters: red Wratten 25, blue Wratten 82 and Violet Wratten 47. Porter found that the colours faded for a duration of 5 minutes and then returned. Their right eye gave a good view and using their left eye they suspected that it was 0.5 steps brighter than the remainder of the crater. The suspected colour remained visible, even under moments of good seeing conditions. The colour eventually faded over time and was eventually gone. Porter reportd seein gcolour here on the following night. Apparently other bright spots showed no colour. Fitton suggests that the filters used confirm that the south east wass was definitely red in colour. The Cameron 2006 catalog ID=37 and the weight=0. ALPO/BAA weight=1.
Aristarchus 1973 Nov 10 UTC 20:00? Observed by Coates (England, 8" reflector x200, Moon at gigh altitude above horizon). "Attracted to crater because of an orange hue extending towards Herod. Has seen this at other times. Thinks not a LTP, but actual color on ground."NASA catalog weight=2 (low). NASA catalog ID #1381.
On 1978 Apr 23 at UT20:35 (Rawlings, UK, finderscope, x50) observed a bright flash (~0.3 sec duration) near to Copernicus (20W, 9N) with rays to the south east whilst he looked through a finder scope. Moore, who studied the drawing, suggests that the area of the flash was near Copernicus. However Cameron says this cannot be the case if the flash was in darkness as mentioned in the BAA Lunar Section circular. She comments that it might have been a meteor? The Cameron 2005 catalog ID=28 and weight=1. The ALPO/BAA weight=1.
On 1970 Nov 14 UT20:10 J.Coates (Burnley Astromical Society, 8.5" reflector, x102 and x204) saw a dirty green colour on the NW region of the crater, in patches, with a green area nearby. ALPO/BAA weight=1.
Proclus 1955 Nov 01 UTC 02:50-03:05 Observed by Bartlett (Baltimore, MD, USA, 3.5" reflector x100, S=6, T=5) "Proc. D normally 5 deg bright was vis. tonite only in blue light, whereas usually is vis. in integrated light. However at col. 110.5 deg it was a dark spot (see # 816) C.p. tonite was normal 5 deg bright but in Oct. lun. was dark". NASA catalog weight=4 (good). NASA catalog ID #625. Note Proclus D does not refer to the crater Proclus D as defined by the IAU, but probably to a spot inside the crater that Bartlett designated D!
Aristarchus 1962 May 20 UTC 08:00? Observed by Wildey, Pohn (Mt Wilson, CA ?, 60" reflector? Photometer) "Reddish color in Aris. 0.88 magnitudes brighter than normal (photometry)." NASA catalog weight=5 (very good). NASA catalog ID #758. ALPO/BAA weight=3.
Bullialdus 1962 May 20 UTC 08:00? Observed by Wildey, Pohn (Mt Wilson, CA ?, 60" reflector? Photometer) "1.05 magnitudes brighter than normal (photometry)." NASA catalog weight=5 (very good). NASA catalog ID #758. ALPO/BAA weight=2.
Kepler 1962 May 20 UTC 08:00? Observed by Wildey, Pohn (Mt Wilson, CA ?, 60" reflector? Photometer) "1.03 magnitudes brighter than normal (photometry)." NASA catalog weight=5 (very good). NASA catalog ID #758.
Enhancement of spectrum in UV and CaI recorded on photoelectric spectrometer scans by Grainger and Ring in Italy. Effect seen on Aristarchus. Cameron 1978 catalog ID=740 and weight=5. ALPO/BAA weight=5.
1969Jan04 UT19:30-20:00 W.Deane (Hendon, UK, 2" refractor) observed a bright yellow spot just E of Aristarchus, stretching from the S. end of Montes Harbinger to the S. wall of Prinz. The ALPO/BAA weight=1. ALPO/BAA weight=1.
On 1984 Feb 18 at 05:35UT Moseley (Coventry, UK, 6" reflector, x120, seeing II-III, transparency very poor to good) found that the crater was difficult to define. However observing conditions variable. P. Moore observed that the crater was normal at 04:00UT. Moseley found the crater well defined later. Cameron 2006 catalog extension ID=242 and weight=3. ALPO/BAA weight=1.
On 1992 Jul 16 at UT 03:32-09:31 D. Louderback (South Bend, WA, USA, 3" refractor, x134) detected yellow on the southern rim of Aristarchus, and the colour looked "darker" through a yellow filter and the region was "duller" than normal. The region was 1 intesnsity step brighter on the 2nd measurement, "on all points in it". The comet tail-like ray had 3 sections and was "mottled" in appearance. Finally the Cobra Head region had possible variations in brightness. The cameron 2006 catalog ID=451 and the weight=3. The ALPO/BAA weight=2.
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.
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.
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.
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.
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 Feb 18 UTC 00:00? Observed by Gledhill (Halifax, England, 9" refractor) "Illum. of another group of craters different from group in Aug. & Sep. obs. (date is F18 if phase is similar to Ap 1870) NASA catalog weight=2 (low). NASA catalog ID #164.
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 1938 Jun 15 UTC 08:00 Observed by Haas? (New Mexico?, 12?" reflector) "NW. end of floor had intensity I=2.0, but on 7/15/38, I= 3.7, conditions similar." NASA catalog weight=4 (high). NASA catalog ID #439.
Plato 1971 Dec 04 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.
On 1990 Jan 13 at UT 22:15-23:05 J. Pedler (Bristol, UK, seeing=III and transparency=excellent, no spurious colour) detected a blue region on the north of Aristarchus, varying in sharpness/diffuseness. The crater rim in this region could not be descerned. Eleswhere the crater rim was normal as too were other features. When a Moon blink device was used, no colour blink was detected, however through the blue filter the suspected area was bright and the crater rim indistinct. Whereas through the red filter the area looked perfectly normal. At 22:30UT the effect had vanished and everywhere was normal. The Cameron 2006 catalog ID=388 and the weight=5. The 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.
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.
Four bright spots seen in Mare Crisium. There was also peculiar behaviour of the terminator. Source: Midlehurst 1968 catalog TLP ID=16. Ref Web 1962 p62-76. The ALPO/BAA weight=1.
On 1990 Jan 14 at UT 01:14-01:55 M.C. Cook (Frimley, UK, seeing=poor) observed that Aristarchus did not appear normal for this illumination. the northern half of Aristarchus was "2x>" than the southern half of the crater. There were two white patches of apron material near to the crater Herodotus that were 50% of the brightness of the southern half of Aristarchus. Furthermore the southern half of Aristarchus had a circle - "dull patch on inner S wall with a bright point shining through it. (Bartlett's EWBS?)". The Cameron 2006 catalog ID=389 and the weight=4. The ALPO/BAA weight=2.
On 1944 Mar 12 at UT 23:00 H.P. Wilkins (Kent, UK, 8.5" reflector) observed that Plato appeared incomplete - the central crater had it's north wall obscured. cameron comments that maybe this was due to the low altitude of the Moon? The Cameron 1978 catalog ID=491 and the weight=4. The ALPO/BAA weight=2.
Birt 1972 Sep 25 UT 23:20-23:45 Observed by Doherty (Stoke-on-Trent, England, 10" reflector x280, S=VG) "All bright areas were similar in intensity (albedo) but 2 larger ones at times seemed brighter. N & S. The E. IAU? wall of the small craterlet showed most prominently & at times suspected a faint pt. of light just W. of its center. This was very suspect however." NASA catalog weight=1 (very low). NASA catalog ID #1345.
Darling, alerted by Keyes saw Aris >> brighter obj on moon (as it normally is) Comet ray & N rim of Herod. >> could see no detail - Aris. except two bands, moon was pale yellow (low alt.) with halo around it. Nothing unusual elsewhere. Cameron 2006 catalog extension ID #384 and weight=0. ALPO/BAA weight=1, just in case there is some merit in this report?
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.