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.
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.
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.
Aristarchus-Herodotus 1969 Jan 04 UT 03:00-03:45 Observed by Taboada (Mexico) & Corralitos Observatory (Organ Pass, NM, USA, 24" reflector + Moon Blink) "Brightness increased slightly around Herod. & cleft (S.V?) became darker than previous day. The dark gray & pink formed yellowish at 0345h in whole region of Aris. Bluing around crater in Corralitos MB (photos?) (confirm. of activity at Aris.?)" NASA catalog weight=5. NASA catalog ID #1115. ALPO/BAA weight=3.
Aristarchus-Herodotus 1969 Jan 04 UT 03:00-03:45 Observed by Taboada (Mexico) & Corralitos Observatory (Organ Pass, NM, USA, 24" reflector + Moon Blink) "Brightness increased slightly around Herod. & cleft (S.V?) became darker than previous day. The dark gray & pink formed yellowish at 0345h in whole region of Aris. Bluing around crater in Corralitos MB (photos?) (confirm. of activity at Aris.?)" NASA catalog weight=5. NASA catalog ID #1115. ALPO/BAA weight=1.
On 1988 May 11 (UT 20:30-20:55) C. Brook (Plymouth, UK, 60mm refractor, x28) found Aristarchus to be brighter than he would have expected. Compared to Proclus and Tycho. He observed from 20:55-22:38 and found it to be normal in brightness over this time. The 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.
Observed by Bartlett (Batimore, MD, USA, S=4, T=5) "E.wall? blue glare. He was uncertain @it. Couln't focus it. Herodotus unaffected." NASA catalog weight=4. NASA catalog ID 581. ALPO/BAA weight=2.
Conspicuous bright spot seen on 6th. Also seen on 7th, absent on 8th. Cloud-like effect where light had been (on 8th). Cameron 1978 catalog TLP ID No.=139 and weight=3. ALPO/BAA weight=2.
P Moore, Selsey, Sussex, UK, used a 5" x250 scope and between 23:50UT on Jul 1st 1977 and 00:10UT on Jul 2nd 1977 observed Aristarchus. The south wall of the crater was reddish, extending down to the outer south east wall (IAU). However seeing was no better than III-IV and he was 99% sure that the colour was spurious. His report was submitted only in case any other observers reported something similar. ALPO/BAA weight=1.
Aristarchus was not normal, but all the following features were: Mare Crisium, Proclus, Sinus Iridium, Grimaldi, and Tycho. Observed by Mellor and Fitton, UK. Observer notes that Aristarchus is brighter than Tycho when normal. Estimated variation was 25%. However the Moon was low and the Moon was yellow. Despite this the observer decided that the effect was real. Cameron 2006 extension catalog ID=32 and weight=2. ALPO/BAA weight=1.
Proclus 1958 Aug 30 UT 06:30-06:45 Observed by Bartlett (Baltimore, MD, USA, 4" reflector, x240, S=6, T=5) "Proc. Q. a bright spot on NE rim apparently a crater presented a very abnormal aspect. Extraordinarily large & at least 9 deg bright -- like EWBS on Aris. This spot is subject to large unexplained variations. At 97 deg col. in July, Q was also 9 deg bright but very small. At col.96 deg, 5 in May '58, col.99deg in Feb.'50, & 96 deg in Nov. '55 it was not seen at all. Assoc. with tonite was a distinct blue glare on NE rim, extending for short dist. & @ 2x as far as S." NASA catalog weight=4 (high). NASA catalog ID #894.
Aristarchus 1970 Jan 23 UT 07:00? Observed by Thomas, Rogers, Corralitos Observatory (Organ Pass, NM, USA, 24" reflector, Moon blink) "Bluing around the crater -- vis. in monitor but not photographed due to clouds" NASA catalog weight=4 (high). NASA catalog ID #1233
On 1955 Oct 02 at UT 05:30-05:55 Bartlett (Baltimore, MD, USA, 3.5" reflector, x100, S=7, T=5) observed the following in Aristarchus crater: "Viol. gl. on E, NE rim, over EWBS resembled a viol. mist. Crater itself was hazy, could not get a sharp focus". The Cameron 1978 catalog ID=615 and weight=4. The ALPO/BAA weight=2.
W.Humboldt 1897 Dec 09 UTC 23:00? Observed by Goodacre (Crouch End, England, 12" reflector) "Shadow anomaly. Chocolate penumbral shade edging black shadow on E. wall." NASA catalog weight=3 (average). NASA catalog ID #296.
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.
Copernicus 1975 Jul 24 UT 22:52 Observed by Robinson (Teignmouth, England, 10" ? reflector or 4" refractor?) "Copernicus indistinct in red and blue filters" NASA catalog weight=3 (average). NASA catalog ID #1409.
Fracastorius 1975 Jul 24 UT 22:52 Observed by Robinson (Teignmouth, England, 10" ? reflector or 4" refractor?) "Fracastorius had a blink (red or blue?)" NASA catalog weight=3 (average). NASA catalog ID #1409.
Tycho 1975 Jul 24 UT 22:52 Observed by Robinson (Teignmouth, England, 10" ? reflector or 4" refractor?) "Tycho indistinct in red and blue filters" NASA catalog weight=3 (average). NASA catalog ID #1409.
On 1996 Jul 31 at 22:40UT P. Moore (Selsey, UK, 15" reflector, x300) noticed a lack of detail in the Cape Agarum area - he would normally have expected to have seen some craterlets. However he would not rate this observation much because the seeing was only III and he does not think that it was an obscuration. However just in case he wanted to record this report in the archives. ALPO/BAA weight=1.
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.
Proclus 1973 Nov 11 UT 20:40-23:05 Observed by Savill (Cambridge, England, 12" refractor, x100?), Young (Yorks, England), Pedler (Bristol, England, 6" reflector?), Livesey (Scotland). "At 100x showed a bright spot in S.part of crater. At 300x was vis. but power too high. In 8-in refr. at 170x, at 2055h 2 spots present. Confirmed by Young. Seeing was improving. At 2104h in 12-in refr. at 260x the lower spot seemed distinctly enlarged & vaporous. Decided it was due to poor seeing. Later the 2 spots were better defined & separated but lower moved away fr. larger one & they seemed more separated than earlier. Obs. ended at 2305h when they decided it was not an LTP. but was 2 craters instead of humps. There were neg. repts. from others at the same time. (there are no craters in Proclus)." NASA catalog weight=2. NASA catalog ID # 1382. ALPO/BAA weight=1.
Schroter's Valley: Cobra Head 1824 Nov 08 UTC 00:00? Observed by Gruithuisen (Munich, Germany) "Mingling of all colors in small spots. Described a violet glimmer near Cobra Head & plateau that spreads; starts just after sunrise. Cameron 1978 catalog weight=4 and catalog ID=103. The ALPO/BAA catalog weight=3.
Plato 1870 Mar 19 UT 00:00? Observed by Gledhill? (halifax, England, 9" refractor) "Same group (of craters) as in Feb. illuminated. (if phase same as Apr. 1970 then date is Mar 19" NASA catalog weight=2 (low). NASA catalog ID #165.
Proclus 1958 Jul 03 UT 06:18-07:15 Obsrved by Bartlett (Baltimore, MD, USA, 5" reflector, x180, S=5, T=3) "Proc. C a remarkable phenom. of which he is certain. At beginning of obs. C was 5 deg bright & conspicuous -- its normal appearance at or nr. SS. At 0620 it suddenly became dull so as to almost vanish. By 0640 C was very dull-- 3.5 deg. An indep. check was made at 0715 with same instru. & it was still at 3.5 deg. Note C does not mean Proclus C but a notation system developed by Bartlett for features in and around Proclus". Cameron's 1978 NASA catalog weight=4 (high). Cameron's 1978 NASA catalog ID #688. ALPO/BAA weight=3.
On 2006 Jan 16 at 05:44UT T. Bakowski (Orchard Park, NY, USA) observed a round dark object in 1 of 21 frames from a camera. The exposure was 1/250th sec. Seeing conditions were bad. The dark spot is east of Mons Vinogradov, at or near crater J. ALPO/BAA weight=1.
Conspicuous bright spot seen on 6th. Also seen on 7th, absent on 8th. Cloud-like effect where light had been (on 8th). Cameron 1978 catalog TLP ID No.=139 and weight=3.
Schickard 1939 Aug 02 UT 00:01 Observed by Moore (England, 12?" reflector) "Floor milky, walls almost vis. 2 bright pts. in area. not extending to extreme w.part of floor" NASA catalog ID #456. NASA catalog weight=4. ALPO/BAA weight=3.
On 1990 Dec 03 at UT23:00-01:30 M.C. Cook (Frimley, Surrey, UK) noticed that the central peak of Aristarchus was quite bright and extended to a circular region in the east in the crater "sprout" area - Cameron suggests that this is Bartletts self defined EWBS area?. Beyond the rim to the east was very bright. However no colour effect was seen in filters. A sketch was supplied. Cameron notes the coincidence of perigee and full Moon. The Cameron 2006 catalog ID is 416 and the weight=3. The ALPO/BAA weight=1.
On 1993 Sep 02 UT2250-23:30 C. Brook (Plymouth, UK, 70mm refractor, x100, seeing=III) noted that Cleomedes A was exceptionally bright and compared it with plate 4C in Henry Hatfield's Atlas. He had noticed it was bright earlier in the evening, but his attention was drawn to it at 22:50UT. By 23:07UT it was dimmer, with patches of cloud coming up and a slight deterioration in seeing. By 22:30 UT the crater was no longer exceptionally bright. The Cameron 2006 catalog ID=466 and weight=5. The ALPO/BAA weight=1.
Proclus 1955 Oct 03 UTC 02:10-02:40 Observed by Bartlett (Baltimore, MD, USA, 5" reflector x180, S=1-0?, T=4) "Proc. D (his ID) normally a bright white spot on E. floor disappared as a dark spot, I=2.5 & barely disting. from 3deg gray. In July lunation it was seen as normal bright spot at col. 347.57, 359.36, 36.74 & 61.83 but vanished after 61.83. C.p. abnormally dark & close to floor intensity. At 1st failed to find it I=2.5 whereas it is normally 5.0." The cameron 1978 catalog ID=616 and weight=4. The ALPO/BAA weight=2.
East of Plato 1961 Jun 29/20 23:00?-01:00 Observed by Granger and Ring (both in Italy) "Enhancement of spectrum in UV & Ca I recorded on photoelectric spectrometer scans" NASA catalog weight=5. NASA catalog ID #742. ALPO/BAA weight=3.
Aristarchus 1970 Jan 24 UT 07:00? Observed by Thomas, Rogers, Corralitos Observatory (Organ Pass, NM, USA, 24" reflector, Moon blink) "Bluing around the crater -- vis. in monitor but not photographe due to clouds" NASA catalog weight=4 (high). NASA catalog ID #1233
On 1955 Oct 03 at UT 04:45-05:05 Bartlett (Baltimore, MD, USA, 3.5" reflector, x100, S=5, T=3) observed the following in Aristarchus crater: "Whole cdrater hazy, couldn't focus it. Herodotus unaffected". The Cameron 1978 catalog ID=617 and weight=4. The ALPO/BAA weight=2.
E. of Picard 1879 Nov 01 UT 00:00? Observed by an unknown observer (England?) "Bright spot. (Fort admits he has several more of these records of LTP, but does not give them because they don't fall nr. Mars'opposition which he tho't was cause of them.) Elevation rising N- S, with shading toward terminator." NASA catalog weight=3 (average). NASA catalog ID #214.
On 1978 May 24 at 00:40-01:05UT P. Moore (Sussex, UK, and using a 12.5" reflector at x300-400 - seeing IV) saw colour in Aristarchus (red on the south east wall and southern "horn" of the crater. He could not detect colour elsewhere, but felt that the effect might have been spurious colour. With the increasing altitude of the Moon the light effect decreased. Moore detected red the next night as well (May 25th) and on May 27th, but it was not present on May 29th. The Cameron 2006 Extension catalog ID=33 and the weight=0. The ALPO/BAA weight=1.
Conspicuous bright spot seen on 6th. Also seen on 7th, absent on 8th. Cloud-like effect where light had been (on 8th). Cameron 1978 catalog TLP ID No.=139 and weight=3.
Daniell 1894 Feb 23 UT 00:00? Observed by Krieger (Germany) "Strong, brownish-red coppery hue." NASA catalog weight=4 and catalog ID #281. ALPO/BAA weight=3.
1894 Feb 23 UT 00:00(?) Posidonius N. Wall observed by Krieger (Germany) "Strong, brownish-red coppery hue." NASA catalog weight=4 and catalog ID #281. ALPO/BAA weight=3.
Cleomedes Alpha 1993 Sep 03 UT2200-22:20 G. North (UK, 18.25" reflector, x86 & x144) observed it to be a strikingly brilliant 'splodge' seen in the mostly shadow filled interior of Cleomedes, and around this splodge was a faint halo extending symetrically in an eastwards direction. The splodge was the mountain Cleomedes Alpha. Strangely no shadow from the mountain was seen to be cast onto the halo on the east. Observer alerted other observers by phone, and upon returning to the scope found that the splodge had faded in brightness and continued to fade over the next hour as one would expect from a mountain at sunset. Some heavy spurious colour was present. J. Cook & M. Cook (Frimley, UK) observed at 22:20-22:25 and found the bright splodge, but no halo. M. Cook re-observed later and confirmed normal fading of splodge. Roscoe observed from 00:30UT next day, but by that time Cleomedes Alpha had set and was no longer visible in the shadow filled floor. S. Beaumont had observed earlier at 20:00 but had recorded all as normal in Cleomedes. The Cameron 2006 catalog ID=466 and weight=5. The ALPO/BAA weight=2.
Madler 1962 Apr 22 UTC 08:24 Observed by Wildey, Pohn (1st measurement) (Mt Wilson, CA, USA, 60" reflector with photometer) "Photometric measures show change in brightness from Vmag=3.79 to V=4.40. The average brightness for age 17d is V=3.99. Crater faded from .2 mag brighter than av. to .4 mag. fainter (@1.5 times fainter) than av., a range of .6 magnitude, or @ 1.5 times diff. in brightness". NASA catalog weight=5 (very high). NASA catalog ID #757.
On 1961 Jul 01 at UT 00:00? an unknown Miranova (Russia or Israel) obtained some spectral photometry of lunar objects. A spectral plate in 425 -> 500nm bands. The Cameron 1978 catalog ID=743 and weight=5. The ALPO/BAA weight=3.
Plato 1938 Jul 15 UTC 06:50 Observed by Haas (12" reflector?) "Floor -- definitely green under same conditions as 5/17/38 (see #437). Kaiser after 90 obs. couldn't find any regularity to appearance of the brown color in Plato. I=3.7 comp. with I=2.0 on 6/15/38 (see #439-- color of ground?)." NASA catalog weight=4 (good). NASA catalog ID #440.
Aristarchus 1970 Jan 25 UT 07:00? Observed by Thomas, Rogers, Corralitos Observatory (Organ Pass, NM, USA, 24" reflector, Moon blink) "Bluing around the crater -- vis. in monitor but not photographe due to clouds" NASA catalog weight=4 (high). NASA catalog ID #1233
Madler 1962 Apr 22 UTC 11:48 Observed (2nd mesurement) by Wildey, Pohn (Mt Wilson, CA, USA, 60" reflector with photometer) "Photometric measures show change in brightness from Vmag=3.79 to V=4.40. The average brightness for age 17d is V=3.99. Crater faded from .2 mag brighter than av. to .4 mag. fainter (@1.5 times fainter) than av., a range of .6 magnitude, or @ 1.5 times diff. in brightness". NASA catalog weight=5 (very high). NASA catalog ID #757.
On 1897 Oct 13 at UT 20:00 Pickering (Cambridge, Mass. USA, 15" refractor?) observed in Shroter's valley and the vicinity, "Variations in vapor column" The Cameron 1978 catalog ID=292 and the weight=1. The ALPO/BAA weight=1.
On 1955 Oct 04 UT 22:00 Dubois and Kozyrev (Crimea, Soviet Union, 50" reflector) observed the following in Aristarchus crater: "Low disprsion (d=.13 whereas on Oct 28 & Nov d=0.03) Spectogram showing emiss. in central part nr. H&K". Cameron says that this is a confirmation of the previous Bartlett TLP? The Cameron 1978 catalog ID= 619 and weight=5. The ALPO/BAA weight=5.
Aristarchus 1969 Nov 27 UT 20:00? Observed by Miles (coventry, England, 5" refractor, x120) "Strong pink color in N. part; spectacular strong blink. Did not notice obscur. Bands were vis." NASA catalog weight=4 (high). NASA catalog ID #1227.
Pico 1976 Aug 13/14 20:50-01:00, 03:15 Observed by Foley? or Findlay? (England, S=E) "Dark line to the E. (IAU?) of Pico obs. & persisted till 0100h. On 14th the whole area around Pico was gray & diffused. At 0315h detail reappeared & NW corner sparkled. Small brilliant spot appeared due N. of it & the albdeo exceeded Aristarchus (=9+ ?)" NASA catalog weight=3 (average). NASA catalog ID #1443.
1936 Oct 04 UT07:42 W.Haas drew bands, many smaller spots on floor. Pickering's atlas 9D col 141 shows bands but no bright spots. Haas' location Aliance, OH, USA. Reference: Haas, W. J.Royal Astr. Soc. Canada. Cameron 1978 catalog ID=416 and weight=3. ALPO/BAA weight=2.
On 2005 Oct 21 at UT 13:07-14:27 R. Gray (Winnemucca, NV, USA, 15cm F/9 refractor, x228, seeing 4-5, transparency 5-6) observed a possible TLP in Macrobius. His report is as follows: "Blinked Macrobius with Wratten Filters Blue 38A and Red 29. Macrobius became almost invisible through the Blue 38A and essentially the same as in white light through the Red 29. The interior of the crater was completely in shadow. The only part of the east wall that was visible was an apparent high point still in the sun and seen as a bright point of light. This faded into darkness before 13:56UT. No sign of any illumination of the east wall crater interior or the interior of the west wall was seen during the observation period. The outer west wall was a rough looking, complicated mix of deep shadow and illuminated sunlit terrain." The observer concluded that there was not a TLP - although he did get a filter reaction, this may have been due to the different densities of the filters? ALPO/BAA weight=2.
In 1955 Oct 05 at UT 03:40-03:48 Bartlett (Baltimore, MD, USA, 5" reflector, x180, S=6, T=5) observed in aristarchus an itenseley bright blue-violet glare on EWBS, E, and NE wall. The Cameron 1978 catalog IF= 620 and weight=4. The ALPO/BAA weight=2.
Near Kepler 1966 Dec 31 UT 03:00? Observed by Petrova, Pospergelis (Pulkova Observatory, Russia) "Special glow in this area. Confirmed by photoelectric method (Petrova) & polarimetric (Pospergelis?) almost simultaneously recorded by both" NASA catalog weight=5 (very high). NASA catalog ID #1007.
On 1904 Aug 01 at 05:00? Pickering (Echo Mt., CA, USA) UT Plato: "Bright hazy obj., 2" diam. on floor, Obs before & after were normal". The Cameron 1978 catalog ID=318 and the weight=4. The ALPO/BAA weight=3.
Messier A 1951 Oct 20 UT 00:00? Observed by Moore (England) "Brilliant white circular patch in it. has seen it & Messier blurred several times." NASA catalog weight=4 (good). NASA catalog ID #545 Note that the date and time given are probably wrong as the Sun is ~7deg below the local horizon at this time. ALPO/BAA weight=1 to reflect this error.
Jansen 2013 Aug 26 UT 00:30-01:30 P. Grego (Cornwall, UK, 20cm SCT, x200, seeing II, transparency good) observed a dark patch just east of Jansen D. He had not seen this before. There maybe a depression here hinted at in LOLA ndata. ALPO/BAA weight=1.
On 2008 Oct 19 during 05:40-06:30UT D. Holt of Chipping, UK observed an anomalous patch of illumination just to the west of the centre of the Posidonius J crater. It is possible that this is just some high ground on the floor protruding through the shadow filled crater at sunset. Therefore this has been assigned a weight of 1 for now, just in case it is a TLP - until proven otherwise.
Aristarchus 1976 Aug 15 UT 23:00-23:45 Observed by Garbott (2) (Bedfordshire, England, 10" reflector x500, seeing Antoniadi I) and by Moore (Sussex, England, 15" reflector, x360, seeing Antoniadi IV) "Noted blue color on N. wall extending toward Herod. Also saw orange color in S. region. Confirmed by father. (similar to many of Bartlett's rept's.), More noted nothing unusual at 2320h." NASA catalog weight=4. NASA catalog ID #1444. ALPO/BAA weight=2.
On 2009 Oct 09 UT11:00-11:04 NASA's LCROSS upper centaur stage, followed 4 min later by the observation spacecraft, is due to impact into a the crater Cabeus in the hope of kicking up some dust and possible frozen volatiles. Note that this description is intended for observers on the date of impact and it is doubtful that any new science could be achieved by re-observing the same area months after the impact. If you are observing on the date of impact, then please observe around 11:00-11:04UT and ignore the predicted times in the headings. However this report is included as techniqcally if something is seen it is a TLP, albeit man-made! For those observing on the date in question here are a few observing tips to maximize the science of your observations: (1) If you are imaging, then please try to obtain images before the impact because you can then subtract these from images taken during the impact and hence show up faint changes that you might normally miss. (2) If you have a spare scope and camera,use this to observe through filters such as UBVR or I, or if you have narrow band interference filters, try observing in say Hydrogen Alpha, Methane, OH, or indeed any volatile that you might expect to see in a comet (the main source of water at the poles). (3) Please try checking the area long after the impact, just in case other effects might trigger a TLP. (4) Please go to some trouble to ensure accurate timings- these will be essential in order to understand the sequence of events - assuming any are seen. Timings can be obtained using a short wave radio or via a GPS. Note that you should always use UT or UTC. (5) Please send any observations that you make into the upload section of the LCROSS campaign observers web site. If you belong to an astronomical society e.g. BAA or ALPO, then do please send copies of your observations to the Lunar Sections of your society or club. (6) Finally this desription will be updated a day or two after the planned impact.
On 2009 Sep 09 UT23:31:43 P.Grego (St Dennis, Cornwall, UK, seeing II- III) suspected a flash south of Cabeus, just beyond the terminator. It was not bright, and lasted a fraction of a second. Thinks it might have been illusory as he saw some fainter flashes (cosmic rays?) during that nights observing session. ALPO/BAA weight=1.
On 1973 Oct 17 at Ut 11:30 Androsan (Edmonton, Canada, 6" reflector, x230) observed a glow 1-2 sec reappearance of Saturn's rings at a place of ring's appearance on the dark limb. The observers attributed it to Saturn and its rings. Cameron speculates that it might be due to gas or dust at the lunar surface. Eye was attacted to the glow which delineated the limb at a position angle of 210 deg at emersion, at Earthshine at Edmonton. The Cameron 1978 catalog ID= and weight=2. The ALPO/BAA weight=1.
Aristarchus 1974 Sep 08 UT 04:45-06:30 Observed by Cowan and Johnson (Dublin, TX, 8" reflector, x59, x152, S=7) "Saw a bright luminous, blue, misty cloud on th NE rim. Obscur. for 1st hr. then gave way to pink & features became vis. Cloud was tear-drop shape. No movement to glow. Pink cloud glowed too. Very tenuous by 0130h. (Nakamura says there were no seismic events within several hrs. of this time). Another person saw it without being advised as the where it was." NASA catalog weight=5. NASA catalog ID #1393. ALPO/BAA weight=4.
On 2009 Sep 11 UT00:15-00:20 and 01:00-01:05 C.Brook (Plymouth, UK, 5" O.G., x100, seeing tremourlous but definition improving over time) noticed that the central peak(s) in Alphonsus were brightening gradually. No effect was seen earlier at UT23:30-23:35. One presumes that the effect also occured between these two observing times? The observer suspects that this was not a TLP, but is uncertain. ALPO/BAA weight=1.
On 1998 May 18 UT 02:00-03:16 C. Brook (Plymouth, UK, 60mm refractor, x112, seeing III) observed an obscuration of the central peaks of this crater. Copernicus ramparts were clearly visible. The ALPO/BAA weight=1.
On 2009 Sep 11/12 UT23:28-00:00 M.C. Cook (Mundesley, UK, 90mm Questar, x80 and x190, seeing II and transparency moderate-poor) observed pink on the north west rim of Tycho and green-blue on the inner SW rim. No sign of colour elsewhere on the Moon except for the S-E rim of Plato that was red. The Moon was about 20 deg in altitude at the time. The effect had gone by the end of the observing period. A simulation of spurious colour in different directions was generated by the BAA Lunar Section and found to possibly account for these colours, although there should have been some strong colours seen elsewhere in Tycho and none were. The BAA/ALPO weight=2.
During sunset at this feature, with the interior in shadow the observer saw that the central peak was nebulous and fuzzy and not what one would expect. Cameron saw it on 9 Oct 1993 at sunset and noted that it was not nebulous, just a grey patch although briefly she suspected perhaps two points/peaks?. The Cameron 2006 extended catalog ID is 467 and the weight is 3. The ALPO/BAA weight is also 1. The observer used an 8" reflector and conditions were S=4 and T=4.
UT 08:30 or UT 20:30? SW inner wall of Aristarchus was intesnity I=0.5, but was I=2.5 on July 2 at Col. 195. Observing conditions were identical. Band is darkening near col. 180. (Observation made in daylight?). Cameron 1978 NASA catalog ID=425 and weight=4 (very experienced observer). ALPO/BAA weight=3.
On 1979 Jul 18 at 08:30-10:00 D.Darling (Sun Praire, WI, USA, 12.5" reflector, x80) found that Reichenbach glowed for a short time and then faded. Cameron 2006 catalog ID=61 and weight=0. ALPO/BAA weight=1.
On 1979 Jul 18 at 08:30-10:00 D.Darling (Sun Praire, WI, USA, 12.5" reflector, x80) found that Stevinus glowed for a short time and then faded. Cameron 2006 catalog ID=61 and weight=0. ALPO/BAA weight=1.
Mare Numbium 1878 Oct 21 UT 01:02-03:00? Observed by Hirst (England) "Half of the Moon's term. obliterated for 3h. (that part over dark mare & blended in?)" NASA catalog weight=0 (very unreliable). NASA catalog weight=205.
In 1832 Feb 13 at UT 05:00 (maybe 08:00) Gruithuisen (Munich, Germany) observed in Messier two straight lines and between them a dark band covered with luminous pts. (According to Cameron opposite of view revealed by Orbiter missions. Also Year wrong? crater in dark if 1837 it would be FM & fit desc.) The Cameron 1978 catalog ID=115 and weight= 4. The ALPO/BAA weight=2.
On 1938 Jul 24 at UT 08:00 Firsoff (Glastonbury, UK, 6" reflector with filters) observed Grimaldi to be a gray-green colour. The Cameron 1978 catalog ID=442 and the weight=4.
In 1866 Jun 30 at UT 03:00? Tempel (Marseilles, France) observed a star-like point in Aristarchus crater. Cameron says "on darkside or is date 6/9/66 at 2200h?". The Cameron 1978 catalog ID=143 and the weight= 4. The ALPO/BAA weight=2.
Two observing times are given for two observers, 10:30-11:07 UT and 10:45-10:52UT. Castle (Rock Island, IL, USA, 8" 51x and 102x reflector) found that the Proclus region was brighter than the rest of the Earthlit region. They used averted vision at x102 and noticed that Proclus was the brightest object in the center of a glowing area. The size of the glowing area was three times that of the diameter of Proclus in the E-W direction and 4-5 x the diameter in the N-S direction. East of glow was not so well defined. Darling (Sun Praire, WI, USA, 3" reftactor x56) noticed a brightening in the Earthshine in this region and alerted Brit. but they were clouded out.Cameron 2006 catalog extension ID=410 and weight=1. ALPO/BAA weight=1.
Cape Agarum 1967 Jan 14 UT 17:17-17:35 Observed by Middleton, Colchester, England, 4" refractor, x240, S=G) "Cape was hazy or obscured whereas Piccard, Pierce, & Cape Olivium were quite clear. Has seen this area obscured many times" NASA catalog weight=3 (average). NASA catalog ID #1008.
On 1968 Dec 23 at UT 08:40-08:45 Osawa (Kyoto-Ken, Japan, 8" reflector, x167 and x212, S=3-4, saw Taruntius crater (and a wrinkle ridge) to be bright through a red filter. Cameron mentions that this was during the Apollo 8 watch. The Cameron 1978 catalog ID=1108 and weight=3? The ALPO/BAA weight=2.
On 1969 Jan 22 at UT 00:10-00:30 Kilburn (England, UK, 6" reflector x192, English Moon Blink device) observed a colour blink on the outer east wall of Gassendi. Cameron says: "in dark!". The Cameron 1978 catalog ID=1117 and weight=3. The ALPO/BAA weight=2.
Aristarchus 1971 Oct 22 UT 19:43-19:56 A.Mackay (Hatton, UK, 15cm reflector, x50) observed a pale pink on the W(IAU?) half of Aristarchus and a pale shade of blue on the E(IAU?) half. The effect faded from 19:56UT onwards and had gone 2 minutes later. No information on whether other craters exhibited this effect, given. Burgess, who observed later did not see any colour. ALPO/BAA weight=1.
On 1980 Apr 16 at UT 20:00-22:20 P.W. Foley (Kent,UK, 12" reflector, seeing II-III) found that Aristarchus could barely be seen. Therefore it was not possible to take CED brightness measurements. Strangely Cassini, Kepler, Plato and Mons Pico could be seen. However at 20:16 UT St Elmo fire-like flashes were seen coming from the interior south east corner of Aristarchus at 20:16 UT and then the brightnesss spread to fill the rest of he crater. Duration was about 5-20 sec (Cameron comments: atmospheric effects?). The crater reached peak brightness at 20:17UT (CED reading of 8). Foley comments that the crater rim and area 16-24km around this (including Herodoyus) had a translucent radiance. However at 20:25UT the brightness reduced (including Herodotus) down to CED 3, however the blue radiance remained. At 21:07UT Foley saw a star-like flash in the south east of the floor (CED 3-4). Grimaldi was found to be of constant brightness by comparison using the CED Brightness=2). At 20:20UT Amery (Reading, UK) found Aristarchus to be a well visible circular fluorescent patch. At 20:40 Amery found the region between Aristarchus and Herodoutus was glowing - appeared almost as a flare from Aristarchus and by 20:55UT there was also a flare to the west of Aristarchus. At 20:27 Madej (Huddersfield) detected only a slight glow from Aristarchus and the region affected was small - indeed the glow had gone by 20:46. At 20:40 Ricketts detected a "continuous blue emission" - this had a cycle of 5- 10 sec (Cameron comments: atmosphere?). Saxton (Leeds, UK) detected at 20:42 "translucent effects and variations" at 20:42 noticed a star-like point. At 19:00-21:40 M. Price (Camberley, UK) decided that Aristarchus was fainter in brightness than normal. Peters observed a faint nebulous spot at at 20:25-21:00 that changed in brightness in an irregular way. Cameron 2006 catalog ID=86 and weight=5. ALPO/BAA weight=3.
On 1980 Apr 18 at UT 19:00-22:30 P. Madej (Huddersfield, UK) saw two very bright flashes on the eastern edge of Littrow, spaced 40 seconds apart. Ricketts observed blue flashes approximately 20-30 sec apart and Foley saw faint blue. Cameron 2006 catalog ID=86 and weight=5. ALPO/BAA weight=3.
On 1980 Apr 18 at UT20:55 G. Amery (Reading, UK, 10" reflector, 50- 200x, seeing III) individual features not seen near Cassini. Cameron 2006 catalog ID=86 and weight=5. ALPO/BAA weight=1.
North shore of Mare Crisium 1915 Dec 11 UT 06:00? Observed by Thomas (Glenorchy, Tasmania) "star-like pt. on N. shore of mare. (Eimmart?) Particularly bright spot. Tho't it was sunlight from rim of sm. crater." NASA catalog weight=0 NASA catalog ID #358. ALPO/BAA weight=1.
Atlas 1968 Dec 24 at UT 09:15-10:45 Osawa (Kyoto-Ken, Japan, 8" reflector, 9mm Ortho, Seeing=5, later worse) saw a slight brownish hue on the northern shadowy bed in the crater. It was difficult to see the difference between the glow and chromatic aberation of the eyepiece. The tint never showed up in filters. The ALPO/BAA weight=1.
On 1980 Apr 19 at UT 20:37-20:49) P. Madej (Huddersfield, UK, 77mm refractor, x83 and x111) at 20:37 UT saw a slight glow at x83, quite small in size. At 20:46UT no glow was seen at x83. At 20:49 a slight glow seen again, but unclear and illdefined - appeared larger in area at x111. Observatons ceased at 21:56 dues to clid. ALPO/BAA weight=1.
On 1980 Apr 19 at UT20:30-22:59. The following is quoted from the Cameron 2006 catalog.... "(Buczynski) alerted by colleague (Greenwood) who used filters W15 (IR), W25 (red), W44A (blue), & W58 (UV) and had located a possible blink in it. (Bucz) used W15, W44A & W25. C.P was very bright in W25 (red), dull but vis. In W44A (blue) & floor was noticibly darker in W44A than in W25. Bright cp vis. In W15 & floor was of a light shade. Other craters checked for color, none found. In 44A floor lost some definition (gas?). Sketches from Bucz. & Greenwood. (Pedler) at 2140, floor area around cp was seen in white & red as normal but blink was vis in white, darker in blue. Checks of other features were negative. (Amery) small dark center & small dark area - not shadow - under S wall. N wall obscured by dark area extending N onto surrounding mare. (normal?) which was difficult to focus (gas?). At 2155 N wall now sharper & dark area less intense. Craterlet Cameron in N wall clearly seen which was invisible 1/2 h earlier. (Saxton) whole crater flashed and blinked at 2155. Could see detail in brighter W 1/2 of crater - not seen earlier. At 2205 seeing poor, at 2215 it was normal. (Blair) at 2155 used red & blue filters & in blue it was darker than in red. W. wall not well defined. (J. Cook) saw spurious color on N & S rims. Saw a pink tinge on SE rim. (A. Cook) saw spur. Color on most craters as seeing deteriorated. Got a blink on SE region > red than blue". The Cameron 2006 catalog ID=87 and the weight=5. The ALPO/BAA weight=3.
On 2005 Jan 15 at UT 01:25 R. Spellman (Los Angeles, CA, USA, 8" reflector) observed 4 bright points of light on the crater Mutus F? - see Rukl Atlas page 175, chart 74. If his identification of the crater was correct then he could see no structures in the crater that would yield this effect. It could well be that the 4 bright points are just 4 high peaks on the rim catching the first rays of the Sun. The ALPO/BAA weight=1.
On 1881 Sep 27 at UT 19:00 Marokwic (South Africa) observed a comet- like object pulling across the Mon. The Cameron 1978 catalog ID=225 and the weight=2. The ALPO/BAA weight=1.
On 1969 Nov 15 at UT 02:20-03:20 Lagunas (Santiago, Chile, 10" reflector) observed some brightenings in Aristarchus during the Apollo 12 watch. The Cameron 1978 catalog ID=1209 and weight=0. The ALPO/BAA weight=1.
On 1980 Apr 20 at UT 19:25-23:43 P.W. Foley (Kent, UK, 10" reflector, seeing II-III) found that Aristarchus was very bright in Earthshine (also found on the photographs that he took), giving off a blue "incadescence", the CED brightness reading was 5. Occasionally Foley could see a star-like point in the south east corner. For comparison in brightness he used highland terrain near to Grimaldi (CED=2). By comparison, Buczynski and Lord, could not see Aristarchus. Earlier, Geenwood saw the crater easily as a star-like point with a diffuse exterior glow. Cameron says thyat this was confirmed by Buczynski and Lord (?). At 20:35UT Amery decided that Aristarchus looked brighter than normal. Pedler though described the crater as "small dim nebulous blue or blue-green" that was invisible by 20:27UT. At 20:28-22:01 Blair could not detect Aristarchus, nor could J-H Robinson at 20:40UT though he did see it at 20:55UT as both diffuse and blue. Ricketts detected a blow glow with irregularly spaced flashes of roughly 5-10 sec apart. Cook's at Frimley, UK, saw no features in Earthshine. Cameron 2006 catalog ID=88 and weight=4. ALPO/BAA weight=2.
On 1980 Apr 20 at UT20:05-21:02 J.D. Cook (Frimley, UK, 12" reflector, x60, seeing III-IV) at the start of this session found some bright spots in the area of Copernicus, and at 21:02 detected some flashes in this region. Cameron 2006 catalog ID=88 and weight=1. ALPO/BAA weight=1.
On 1980 Apr 20 at UT20:27 M.Price (Camberley, UK) saw a flash in the Grimaldi-Aristarchus area. Cameron 2006 catalog TLP ID=88 and weight=4. ALPO/BAA weight=2.
On 1980 Apr 20 at UT 19:45-22:45 M.C.Cook (Frimley, UK) - colour (probably spurious) seen on Piccolomini. Cameron 2006 catalog ID=88 and weight=4. ALPO/BAA weight=1.
On 1980 Apr 20 at UT21:12-22:45 J-H Robinson (Teighmouth, UK, 10.5" reflector, x180) found, using a Moon Blink device, evidence of colour on the flor patches of Fracastorius crater, brighter in blue than in red. Also the floor to center varied in brightness in blue and in red. Peters observed in white light and found the south east-south wall had a slight orange cast and when a Moon blink was used it was less bright in blue than in red light. M. Cook found spurious colour on the south rim and also on Mons Pico. There was a colour blink reaction on the southeast floor of Fracastorius - this was both faint and blurred and not seen in white light. A.C Cook detected the permanent blink in the south east floor of the crater at 21:47 and a fainter one in the north west (marginally brighter in red than in blue). J.D. Cook found no colour with the Moon blink device. 21:22-22:10 P.W. Foley got a strong colour reaction with the Moon Blink device - brighter in red than in blue and detected a pink colour visually on the south east wall 22:10- 22:45 (this did not give a blink effect though). Cameron 2006 catalog ID=88 and weight=4. ALPO/BAA weight=2.
On 1980 Apr 20 at UT21:38-21:50, Blair of Renfrewshire, Scotland (used an 8" reflector and seeing=III) saw three patches in Petavius and they could still be seen 7 minutes later. At 21:50UT he used a filter and found the "northern one was brighter in blue, the southern one was brighter in red and the central one was the same shad ein both filters." Cameron comments that the central patch was a permananent one. She then goes onto say that the crater is described as having dark patches that are opposite to what one would expect from Fitton's theory applied to dark features. Cameron 2006 extension catalog ID=88 and weight=4. ALPO/BAA weight=3.
On 1988 Nov 15 UT 19:15 Holmes (Rockdale, UK, 215mm Newtonian) noticed the Censorinus apron (just east of the crater and including the rim) was fuzzy but the crater was clear - a sketch was provided. A BAA Lunar Section observation.Cameron 2006 Catalog Extension ID=339 and weight=3. ALPO/BAA weight=2.
On 2001 Apr 29 at UT 20:50 R. Braga (Italy) reported that without any filter, the brightness of the east wall of Torricelli B was halfway Torricelli C (faintest) and Moltke (brightest). By insering a Wratten 25 red filter though, the crater was slightly more evident. However using a blue Wratten 39A filter, the crater vanished completely, whilst Toricelli C remained. The ALPO/BAA weight=3.
On 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.
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=3.
Near Ross D (24E, 11N) 1964 Mar 21 UT 05:00-06:20 Observed by Harris, Crow, Cross (Whittier, CA, USA) - negative confirmation from Las Cruces. NASA catalog weight=0 (unreliable). NASA catalog ID #805. ALPO/BAA weight=1.
On 1980 Apr 22 at UT20:30 R.Rohslberger (Hittfield, (near Hamburg) West Germany, 8" reflector, x170 25mm occular used, 300mm focal length?) took some photographs using projection. One of these recorded an apparent "ejecta curtain". Cameron considered lens flare, but the other photographs did not show this. If real then the plume was at a height of ~40km and the ray was ~130km. Cameron concludes that this was an impact photograph. The Cameron 2006 catalog ID=90 and the weight=5. The ALPO/BAA weight=3.
On 1984 Apr 08 UT 19:50 Mobberley (14" reflector, x194, seeing III-IV, Transparency Fair-Poor, Cockfield, UK) found that Torricelli B's shadow was 1/2 the way across the floor, which was normal, but that there was a very dar grey/brown shroud around the carter, out to several radii. The ALPO/BAA weight=1.
On 1988 Nov 16 at UT 18:20 M.C. Cook (Frimley, UK) observed that a ray north east of censorinus appeared to be very diffuse and this did not change during the observation. This was odd because proclus ray material remained clear. The apron material of Censorinus was diffuse E-W and the northern part was dull, but not fuzzy. The Cameron 2006 catalog ID=340 and the weight=3. The ALPO/BAA weight=2.
On 1988 Nov 16 at UT 18:20 M.C. Cook (Frimley, UK) observed that Torricelli B changed in brightness (at times), but thinks that this was due to atmospheric transparency. The Cameron 2006 catalog ID=340 and the weight=3. The ALPO/BAA weight=1.
Alphonsus 1952 Nov 24 UT 18:00 A.P. Lenham (Swindon, UK, 3- inch efractor x120) noted that the usual dark spots were not visible, but floor ridges and craterlets were surperbly seen. This may not be a TLP but has been given a TLP category as it is a curious appearance and needs to be verified on a repeat repeat illumination apeparance. ALPO/BAA weight=1.
On 1987 Jan 07 at UT19:10-20:30 H.Miles of Cornwall, UK saw two bright patches were seen in Earthshine at clock positions of 4 (this patch was defined by the dark limb and the brightness faded inwards to the disk, over a short distance. "Centred at 60 deg along the limb from the north - a sketch showed approximately 10-15 deg along it") and 5:30 (this second patch was smaller and not so bright as the first patch - it was west of the north pole. P. Foley (Kent, UK) also detcted the patches and said that one was not far from the sunrise terminator. The Cameron 2006 Extension catalog gives this TLP an ID of 291 and a weight of 2. The ALPO/BAA weight=2.
Alphonsus 1972 Sep 15 UTC 18:48-18:56 Observed by Hopp (13.25E, 52.5N, 75mm refractor) "Diffuse white to blue area within the crater - not sure" T=4, S=4. Ref: Hilbrecht & Kuveler Moon & Planets (1984) Vol 30, pp53-61.
On 1953 Sep 16 UT03:00 R.M. Lippert (San Diego, CA, USA, 20cm Cassegrain reflector, x90)saw a bright magnitude 1 flash on the Moon, that was probably on the east rim of Werner(?) crater. It is unclear if the observer meant it was really magnitude 1, or was what a magnitude 1 star would have looked like. The flash was yellow-orange in colour. Observation described in the "Observations and Comments" column in the December, 1953 Strolling Astronomer (Vol. 7, No. 12), on page 170. The ALPO/BAA weight=3.
Messier 1878 Nov 02 UT 20:00? Observed by Kleis (Cologne, Germany, 6" refractor?) "Shaped like a half moon with E. edge missing. Appeared diffuse. Messier A was sharp & completely defined. Was sure there was fog there. Next day same appear. Shadow was diffused before noon, Mess. A is more yellow after noon, greener near Mess. A noon, both are same color." NASA catalog weight=4 (very high). NASA catalog ID #206.
On 1989 Dec 05 D. Darling of Sun Praire, WI, USA, saw two dark spots on the SE floor of Proclus. The first dark spot was seen through 3" refractor and then also through a 12.5" reflector (35x and 154x). Seeing was S=10 and T=5. He noticed that at 23:00UT the wall spot was less well defined. Darling also comments that he observed reflecting glint, almost as if from a glass surface - he had not seen this effect before. A telephone alert was issued and Caruso verified the spots. Cameron comments that the spots were not shadows because the Sun was at an altitude of 52 deg at Proclus at the time and she states that the steepest slope ever mesured on the Moon was 52 deg and not inside Proclus. Other observers observing were: Weier (6.5" refractor x284 and S=3/10), Caruso (8" reflector x100), and Cameron. The Cameron 2006 catalog extesnion ID was 382 and the weight=1. ALPO/BAA weight=3.
Dawes 1948 Feb 17 UT 19:30 Observed by Thornton (Northwick, England, 18" reflector) "Did not see c.p. saw cleft-like streaks from SW crest to E, shadow." NASA catalog weight=3 (average). NASA catalog ID #501.
Williams of the UK, on 1882 Aug 21 at 19:30UT (Moon's age 7.9 days) noticed a spot at least half as bright, and as large as Picard, near to Picard crater. This observation was reported in the Astronomical Register of the Royal Astronomical Society and is not included in the Cameron catalogs. It is one of many measurements of the brightness of this spot for different illumination angles and is one of three outlying brightness points spotted on a graph by Willaims. The ALPO/BAA weight=3.
Pickering 1971 Jan 04 UTC 20:29-20:37 Observed by Collier (London, England) "Between Saunder and Rhaeticus, apparently coming from Pick. After 2027h it dimished with extraordinary swiftness, like a light goes out. (experienced observer)" NASA catalog weight=?. NASA catalog ID # 1281. Note that this crater was previously called E.C. Pickering before the IAU renamed some craters.
Archimedes 1967 Jan 18/19 UT 23:00?-01:00? Observed by Delano (New Bedford?. Massachussetts, USA, 12.5" ? reflector) and by Corralitos Observatory (Organ Pass, NM, USA, 24" reflector + Moonblink) "Saw an obscuration or unusual appearance on floor. Not confirmed by Corralitos MB., but their rep't says Aristarchus)" NASA catalog weight=4 (high). NASA catalog ID #1009. ALPO/BAA weight=1.
Alphonsus 1952 Nov 25 UT 17:15 A.P. Lenham (Swindon, UK, 3- inch refractor) noted that the usual dark spots were not visible. This may not be a TLP but has been given a TLP category as it is a curious appearance and needs to be verified on a repeat repeat illumination apeparance. ALPO/BAA weight=1.
Eratosthenes 1952 Nov 25 UT 16:30 A.P. Lenham (Swindon, UK, 3- inch refractor x150, Definition Good) noted that there was faint/slightly bright detail inside the interior shadow - observer comments "presumably peaks of central mountains & W. Wall ridge, but very faint" - however this is worth checking out. ALPO/BAA weight=1.
Pallas-Schroter 1953 Nov 13 UTC 02:00 Observed by L.Stuart (USA) "Saw and photographed a bright spot on term. between these two craters. Used Kodak 103aF3." NASA catalog weight=5 and catalog ID #559. ALPO/BAA weight=5.
Piton 2004 Jan 30 UT 15:52 Observed by a GLR observer (Italy) "CCD image shows a point of light in the NW shadow - possibly highland starting to emerge from the shadow?" A GLR report.
On 2009 Nov 25 UT18:42-21:03 P.Abel, T.Little and C.North (Selsey, UK, 15" reflector, seeing II-III, transparency very good), all saw visually a brownish tinge on the north west rim of Eratosthenes crater. P.Abel made a sketch and T.Little took some high resolution CCD images, some of which were through coloured filters. Checks were made for spurious colour, but none was seen elsewhere on the Moon. The eyepiece was changed but this made no difference. M.C.Cook (Mundesley) was observing with a smaller scope at the same time, but saw no colour, however observing conditions were worse. W.Leatherbarrow (Sheffield, UK) was observing with a instrumenet mid way in size, and saw a brownish tinge in the NW rim area, but saw a similar colour elsewhere and put this down to spurious colour. Normally multiple observers seeing the same thing would result in a weight of 4, however as this was only observers at Selsey and some of the evidence contradicts, I am allocating an ALPO/BAA weight=3.
On 2012 Aug 25 UT1944-1952 Eratosthenes crater was imaged by C. Galdies (Malta,Nexstar 8SE, Philips SPC 900NC camera). 4 Registaxed images were produced covering 19:45, 19:48, 19:49, and 19:51. All but the first image, once first order spurious colour had been removed, showed orange on the shaded terraces on the western illuminated rim (similar to what Paul Abel and others saw in 2009, albeit just confined to the NW rim), and the interior floor shadow was slightly smaller in red light. However orange colour was also seen on the eastern side of mountains to the south of the crater, which infers that the spurios colour removal did not fully acomplish its main goal. The effects were not caused by the registax software as the orange colour is visible on individual images. Although probably the colour is not lunar in orgin, its explanation is not fully explaianed, therfore an ALPO/BAA weight of 1 is used for now.
On 1969 Nov 18 at UT 04:22 Loocks (Valparaiso, Chile, 12" reflector) observed a flash of light of magnitude 12. Cameron speculates a meteor and mentions the apollo 12 watch. The Cameron 1978 catalog ID=1214 and weight=1. The ALPO/BAA weight=1.
North (?) (left) Cusp 1912 Jan 28 UT 00:00 (27th 20:00 L.T.) Observed by Harris (Philadelphia? Pennsylvania?, naked eye?): Intensely black curved object 400x240km, shaped like a "crow". Cameron 1978 weight=1 (very low) and ID=334. ALPO/BAA weight=1.
Eratosthenes: On 2017 May 04 UT 21:50-22:10 N. Longshaw (BAA, UK, 78mm APO refractor, x125 & x175, seeing II-III, transparency Good). A brownish (orange) tint was seen on the inner NW wall light terraces - this was immediately obvious when first looking at the crater, but as time progressed the effect became less bright. Other craters were checked for similar coloured tints, but none were seen elsewhere on the Moon. UAI observers in Italy (F. Taggogna & A. Tonon) had been imaging the region in colour 17:57-21:47, but their images do not show any colour on the inner NW rim terraces, the their last image is 3 min before Longshaw saw the colour. The ALPO/BAA weight=2.
Eratosthenes 1947 Jan 30 Mean Col. 16deg. Observed by Hill (UK) "Main peak of massive central mountain group appeared to be in a shadowless having regard to it's claimed height of 6,600 ft. The whole of the floor to the west should have still been in darkness. Instead immediately to the west was a dark (intensity 1.5-2) region extending almost to the foot of the bright inner wall and very diffuse in outline. The observation could not be followed through due to increasing cloud, but on the following night all was normal."
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.
On 1936 Oct 25 at 01:35 UT W. Haas (Alliance, OH, USA, 12" reflector) saw small bright spots on the floor of Eratosthenes, (Pickering's atlas 9A, col. 30deg, shows no spots - according to Cameron). Cameron 1978 catalog TLP=417 and weight=4. ALPO/BAA weight=1.
Copernicus 1966 Mar 01-02 UT 22:06-09:45 Observed by Lovell (Auburn, OH, 4" refractor, x120m S=E, T=3.5) "As sun rose higher, west (ast.?) outer wall was bathed in a soft viol. color -- not in evidence on flat ground below the wall" NASA catalog weight=3, NASA catalog ID #922.
Alphonsus 1969 Nov 19 UT 03:30 Observed by Argus/Astronet (CA?, USA) Brightening in W. rim & S. central floor, seen by 2 obs. (Apollo 12 watch)" NASA catalog weight 3 (average). NASA catalog ID #1219.
Plato 2005 Dec 10 UT 20:46 Observed by Brook (Plymouth, UK, 4" refractor. Conditions excellent with the Moon at a high altitude) "2 second duration white flash seen on the floor of the crater" - BAA Lunar Section Report.
On 1980 Apr 24 at 23:35UT Marco Petek (Porto Alegre, Brazil, using a 7.5" refractor noticed that the center of Plato was bright and opaque and the observer thought it was similar in appearance to Linne. A sketch was made and two other observers confirmed the appearance. Cameron mentions that Petek is an experienced observer. Cameron 2006 catalog extension TLP ID=91 and weight=5. ALPO/BAA weight=3.
Messier and A 1966 Dec 22 UT 06:00-06:30 Observed by Kelsey (Riverside, CA, USA, 8" reflector, x200, S=G, T=P) "Blinks on floors of both craters (blink device not stated)" NASA catalog weight=2 (low). NASA catalaog ID #1004.
On 1985 mar 01 at 20:00UT? Moseley noticed a violet band (tapering to an apex close to the crater centre and merged with the eastern exterior) around Toricelli B, however M. Cook (Frimley, UK) had seen a dusky band(England, UK) on an earlier photo. There was no terminator shadow in the crater. Cameron 2006 Catalog Extension TLP ID=260 aqnd weight=3. ALPO/BAA weight=3.
Censorinus-Maskelyne 1927 Apr 11/12 UTC 23:00-01:00? Observed by Druzdov (Russia) "2 luminescent pts. observed. Not vis. at same sun angle on May 7 & 12th. Not vis. on photos of Barn in 5/23/63" NASA catalog weight=3 (average). NASA catalog ID #393.
2004 Jan 02 UT 09:05 (approx) M. Collins (Palmeston North, New Zealand, ETX 90, seeing 3, clear) saw a possible(?) flash north of Carlini D at about 16W, 35N in adverted vision. It lasted only a split second. The ALPO/BAA weight=1.
Williams of the UK, on 1892 Aug 23 at Moon's age 10.0 days, noticed a spot now rated at +1.5 (in brightness) that had been seen on the 21st Aug, near Picard. Williams comments that this is the only obsewrvation that departs "much" from the curve of diurnal brightness. The spot was descibed as "nearly as large as Picard and nearly half as bright. This observation was reported in the Astronomical Register of the Royal Astronomical Society and is not included in the Cameron catalogs. It is one of many measurements of the brightness of this spot for different illumination angles and is one of three outlying brightness points spotted on a graph by Willaims. The ALPO/BAA weight=3.
Bullialdus 1979 Jun 05 UT 22:00-23:00 Observed by Cook M.C. and J.D. (Frimley, UK, 12-inch reflector, Seeing III-IV, good transparency). MC Cook observed internittently over this time period (due to cloud) and found the crater sharper in a blue filter than in a red filter. No obscuration seen apart from a darkish patch on the SW rim and spreading over onto an area surrounding the rim, which she took to be shadow, though the main shadow was along the east rim of the crater. JD. Cook observed an orange colouration seen on eastern and the cleft on the SW rim. Dark area seen on southern floor of crater, south of central peak. ALPO/BAA weight=1.
On 2011 Oct 07 UT 21:45 Gassendi observed by P. Grego (St Dennis, UK,300m Newtonian, x150, seeing III, intermittent cloud) - whilst producing some sketches of the crater - observer noticed a faint point of light inside the shadow filled interior, two thirds of the way out from where the central peaks should have been, towards the SE rim. Some uncertainty in being sure about this spot and after interuption by cloud it was not seen later that evening. ALPO/BAA weight=1 to refelct uncertainty of observer.
On 1981 Apr 15 at UT06:27-06:40 D. Louderback (South Bend, WA, USA using a 3" refractor x134 and S=4.5-5 and T=5-0) saw a bright spot on the western wall of Eimmart (sketch supplied) have an unusual brightening and shade. Variations occurred over 2-3 minute intervals. Louderback commented that the spot looked like a flare with its apex located at the crater wall and there was some blurring effect on the spot - it decreased in size during the phenomenon. Seeing worsened later. Apparently on the 18th and 19th of April everything was back to normal. Cameron comments that there is no bright spot on the Moon at this location. Lunar Orbiter IV plates 192-3.2 shows evening conditions. Cameron 2006 Catalog Extension TLP ID=130 and weight=3. ALPO/BAA weright=3.
Alphonsus 1969 Nov 20 05:27 (UT)? Observed by Argus/Astronet (San Diego, Sacramento, CA, USA) "Brightening in crater. (San Diego & Sacramento obs. confirmed, but astronauts did not see anything. Apollo 12 watch)." NASA catalog weight=3 (average). NASA catalog ID #1222.
Gassendi 1971 Oct 29 UT 22:15-22:50 observed by J.Coates and A.R. Neville (Burnley, UK, 6" reflectir, x192, slight fog, seeing jumpy but good at times). An in ititial Moonblink search proved negative. However white light observations by Coates revealed a golden brown colour between the black interior shadow and the base of the (bright W (IAU?) wall). Neville confirmed its appearance as a coppery hue and saw the colour for 5 minutes before it vanished at 22:55UT. ALPO/BAA weight=2
Gassendi 1967 Jan 21 UT 19:36-20:24 Observed initially by Moore & Moseley (Armagh, N.Ireland, 10" refractor, x360, S=G), Ringsdore (England, 10" reflector), Sartory (Farnham, England, 15" reflector?), Duckworth (England), Kilburn (Ashton, England, 6" reflector), Farrant (England, 8" reflector) "Eng. moon blink at 1936 (no events from 1750-1815h) outside SE wall, brighter at 1939h, seen vis. at 1940h, faint at 1946h. Moved NW at 1950h. At 2000h, Moseley saw it farther W., lost it at 2008h. Seen again at 2026h further toward group of hills. Moore saw it faint at 2002h, lost it at 2005h, vis. & blink at 2007h. Checks again at 2010-50h, 2130-50, 2200-20, 2250-2300, 2325-0000h.Duckworth suspected blink in S.Iridium nr. Bianchini later, but clouds intervened, after clearing couldn't see it. Neg. obs. in 11 other features, inc. Alphonsus & Plato. Confirmed Gass blink 2018-2024h" NASA catalog weight=5. NASA catalog ID #1010. ALPO/BAA weight=4.
Plato 1966 Dec 23 UT 06:15-07:10 Observed by Kelsey (Riverside, CA, USA, 6" reflector, S=P, T=G) and Coralitos Observatory (Organ Pass, NM, USA, 24" reflector +Moonblink) "3 brilliant spots on floor, all showed blinks, (permanent colored Ground features ?). Not confirmed by Corralitos MB." NASA catalog weight=2 (low). NASA catalog ID #1005.
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 1889 May 11 at 22:00? UT an unknown observer saw an ink black spot on the rampart of Gassendi. It had not been seen before ar at the next lunation or indeed ever again. Cameron 1978 catalog ID=261 and weight=3. ALPO/BAA weight=2.
Cobra Head 1949 Feb 10 UT 00:00? Observed by Thorton (Northwich, England, 18" reflector) "I was examining the Cobra Head of the Schroter Valley, when I noticed what seemed to be a diffuseed patch of thin smoke or vapour, apparently originating from the valley on the E. Side where the landslip is, and spread over the edge on to the plain for a short distance. Every detail of the edge of the valley was perfectly clear and distinct except where this patch occurred, but there the definition was poor and very blurred" NASA catalog weight=4 and catalog ID #515. ALPO/BAA weight=1.
Observed by Firsoff (Somerset, England, 6.5" reflector? x240) "Red glow." NASA catalog weight=4 (high). NASA catalog ID #573.
Bullialdus 1974 Sep 27 UT 22:45-23:40 Observed by Findlay, Ford (Dundee, Scotland, 10" refractor, 150x, 180x, filters) "Saw yellowish- orange color in crater. After clouds passed at 2300h color still there & gave a slight blink which no other craters did. Not seen in red filter, dark in blue. Ford saw it along ridge fr. c.p. to SW wall. Alert did not bring confirm. as clouds intervened for all others." NASA catalog weight=4. NASA catalog ID #1394. ALPO/BAA weight=3.
On 1987 Jan 11 at UT 18:15-23:00 P. Grego (Birmingham, UK, 6" reflector, seeing=III) sketched Aristarchus crater and saw two luminous circular patches on the exterior west wall - these were less bright than the inner wall but brighter than the outer wall. The Cameron 1978 catalog ID=292 and weight=5.
On 1987 Jan 11 at UT P. Moore (Sussex, UK) found the the floor of Plato was much more drk than the adjacent Mare Imbrium. Furthemore there was a blurring of detail over the northeast wall and onto the nearby floor. detail elsewhere in the crater was OK. By 23:00UT there was less lack of detail effects. M. Cook (Frimley, UK) at 21:55UT noted the obscured area but decided that it was narrower than the same effect one month ago and suspected that she may have been observing towards the end of this TLP. The effect gradually dimmed between 21:55 and 22:45UT. Other craters were normal. G. North was affected by poor seeing conditions. Davies detected a slight obscurtion on the north east corner - it was a misty gray feature at x200. The Cameron 2006 catalog extension ID was 292 and the weight was 5. Tha ALPO/BAA weight was 4.
At 03:30UT observer noticed a hint of yellow colour on the floor of the crater and by 03:57UT the south east and central parts of the floor and the circular feature on the south west floor had turned a deep yellow colour. The rest of the crater remained colourless. Other craters also remained colourless. By 04:05UT the colour was fading and by 04:15UT it was gone. Maurice Collins in New Zealand took some low resolution colour images about 4 hours later but these failed to show any yellow colour. Zac Pujic obtained colour images at a different time of natural surface colour on the Moon and finds that Bullialdus does actually have a natural yellow cast to most of the floor. However this does not explain the variability in colour strength seen by Robin Gray. ALPO/BAA weight=3.
Torricelli B 2005 Jan 22 UT 03:15-03:23 Observed by Raul Salvo (Montevideo, Uraguay UT 03:15-03:23) showed that Torricelli B was dark, and there was some brightness variability although the background setting on these images was low and seeing could account for the brightness variation? An ALPO report.
On 1990 Oct 1st at 00:44-01:24UT D Darling (Sun Praire, WI, USA) observed that Gassendi still had a blink effect when viewed through blue (Wratten 38A) and red (Wratten 25A) filters. No effect was seen on Aristarchus. Gassendi was brighter in the red filter and this was confirmed by Weier. Sketches were made and brightness measurements taken. Both observers used a 12.5" reflector x159. At 01:00UT the NW wall was 7.5, the SW wall 8.0, the S. wall 7.5, the floor 6.0, the outer E. wall 8.0, the N. floor 5.5. Gassendi A W. wall was 9.5,l Aristarchus W. floor was 8.0, NW wall 8.0, shadowed floor 0.0, E. outer wall 7.0, NBP 5.5, area between Aristarchus and Herodotus 6.0, and the comet like tail: 8.2 on the E. and 8.5 on the W. The Cameron 2006 catalog extension TLP ID=412 and weight=5. The ALPO/BAA weight=4.
Schroter's Valley 1955 Aug 29 UT 19:45 Observed by Firsoff (Somerset, England, 6.5" reflector x200, S=P-F) "Valley almost completely invisible in blue" NASA catalog weight=4 (high). NASA catalog ID #605.
Hobdell, of St Petersburg, FL, USA, using a 2"? refractor? and Seeing=I-II, saw a bright region on the north west wall that seemed to change in brightness. In truth, there were other features elsewhere on the Moon that also fluctuated, but not as much as Aristarchus was. No colour was noticed. Cameron suspects fluctuations in our own atmosphere. Cameron 2006 extension catalog ID 131 and weight=1. ALPO/BAA weight=1.
Aristarchus 1976 Sep 05/06 UT 18:45-01:35 Observed by Prout (England?, 12" reflector, S=III-II), Foley (England, 12" reflector), Moore and Spry (Sussex, England, 12" reflector) "Viol. hue on crater on W. wall, especially NW corner seen by Prout & 2 Foleys. Moore & Spry did not see color. All obs. noted that the crater was dull
Proclus 1970 Oct 12 UT 00:54 Observed by Bartlett (Baltimore, MD, USA, 4" reflector, 51x-181x) "Floor darkened to intensity 1.5 deg (albedo) & c.p. became invis. Next day c.p. reappared & was 5 deg bright & 6deg bright on 15th" NASA catalog weight=4 (high). NASA catalog ID #1277.
Observed by Bartlett (Baltimore, MD, USA, 5" reflector x180, S=1-5, T=5) Pseudo peak visible within floor shadow at 03:10h" NASA catalog weight=4 (high). NASA catalog ID #671. ALPO/BAA weight=3.
On 2002 Feb 24 UT 05:15-05:35 W. Haas (Las Cruces, NM, USA) observed an obscuration in Herodotus - the shadown was, almost, but not completely black. ALPO/BAA weight=2.
Schickard 1972 Sep 19 UT 19:45-20:25, 20:00-23:30 Observed by Watkins (Herts., Eng. 4.5" reflector, x225, S=G) Amery (Reading, Eng.m 12" reflector?), Fitton (Lancashire, Emg., 8.5" reflector) and Moore (Selsey, Eng., 12.5" reflector?, 4.5" refractor 45-225x, S=P) "Luminous, nebulous spot attracted Watkin's att'n. Got brighter. Checked 'scope--not instru. Obj. had greenish-gray color, size @ 15km. Amery & Fitton with blink devices noted nothing unusual at later times (2000-2330h). Aris., Plato, Gass. were neg. at 1930-2025h (date not given, guessed at fr. available info.). Turbulence, lasting secs. at a time." NASA catalog weight=2. NASA catalog ID # 1344. ALPO/BAA weight=2.
On 2002 Feb 24 UT 06:05-06:20 W. Haas (Las Cruces, NM, USA) observed that the shadow was, almost, but not completely black. This might have been related to the observing conditions. ALPO/BAA weight=2.
On 1955 Oct 28 at UT00:00? Kozyrev (Crimea, Soviet Union, 50" reflector) detected in Aristarchus Fraunhofer lines in UV spectra that were much narrower than in the solar spectrum. This indicated luminescent glow which overlapped contour(?) lines. Greatest after Full Moon, but fluctuated monthly with no indication of solar activity effect. The Cameron 1978 catalog ID=621 and the weight=5. The ALPO/BAA weight=5.
On 1955 Oct 28 at UT 00:06 W. Taylor saw a naked eye flash on the Moon in the north east area, on the edge of Mare Vaporum. The flash was intense and radiated to a large area. The duration was 1/4 seconds.
Aristarchus, Schroter's Valley, Herodotus 1881 Aug 07 UT 00:00? Observed by Klein (Cologne, Germany, 6" refractor, 5" reflector) "Whole region between these features appeared in strong violet light as if covered by a fog spreading further on 7th. Examined others around & none showed effect. Intensity not altered if Aris. placed out of view." NASA catalog weight=4 (high). NASA catalog ID #224.
Aristarchus 1981 Mar 17 UT 22:40-23:25 Observed by Moore (Selsey, England, 15" reflector, seeing III) "Aristarchus very bright according to Crater Extinction Device and a coloured blink detected" BAA Lunar Section TLP report.
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.
Rays of(?) (in?) Herodotus 1955 Oct 28 UTC 18:30 Observed by Kozyrev (Crimea, Russia, 50" reflector, spectragraph) "Spectrum 3934A (K of Ca). 3964 (H of Ca) change in luminosity. 13% in H, 19% in K, 2% in H, 3% in K. in photo-line-depth method" NASA catalog weight=5 (very high). NASA catalog ID #622. ALPO/BAA weight=5.
1996 Jun 28 UT 21:04 F. Ferri and D. Zompatori (Anzio), using a 20cm f/6 reflector, reported that (translation) "Using a blue filter the area was invisible". This is a UAI observation from Italy. ALPO/BAA weight=1.
Babbage 1974 Sep 29 UT 00:00-01:00 Observed by Lord (St Annes- on-Sea, UK, 10" refractor, Wratten 25 and 44a filters, 125x, S=II-III). Activity observed in SW floor between A & W. wall. Details not obscured in either filter, but slightly more darker than surroundings in the blue filter. NASA catalog weight=2. NASA catalog ID #1395. ALPO/BAA weight=2.
Ross D 1965 Apr 14 UT 06:03-06:22 Observed by Harris (Whittier?, CA?, USA, 19"? reflector) "Phenomenon description unavailable. Given at an ALPO meeting" NASA catalog weight=0 (very unreliable). NASA catalog ID #874.
On 1988 Jan 02 at 05:57-06:13 UT D. Louderback (South Bend, WA, USA, using a 8" reflector, seeing 4 out of 10) observed that points B and D on Cape Agarum faded suddenly from 7.0 to 6.4 (B) and 6.0 (D). However these returned to their normal levels at 06:13 UT. Cameron 2006 extension catalog ID=316 and weight=4. ALPO/BAA weight=3.
On 1990 Oct 02 at 02:25-02:45UT D. Darling (Sun Praire, WI, USA using a 12.5" reflector at x159, with red and blue filters), saw a blink effect on the west wall of Plato i.e. brighter through a blue filter than through the red. No Colour blinks seen on Gassendi or Aristarchus. Cameron 2006 Catalog TLP=413 and weight=4.
On 1988 Jan 02 at 06:41-07:08 UT D. Louderback (South Bend, WA, USA, using a 8" reflector, seeing 4 out of 10) observed that at 06:56 UT Aristarchus floor (point F) brightened rapidly from an intensity of 5.2 to 6, however at 07:08 UT the spot returned to normal. He also noticed that the bands on the walls varied every few minutes. A mist like appearance was seen on the floor of Aristarchus. Through a red filter he could see through the haze, but floor detail could not be seen through a blue filter. Cameron 2006 extension catalog ID=316 and weight=4. ALPO/BAA weight=3.
Schroter's Valley 1897 Oct 08 UT 22:00 Observed by Pickering (Cambridge, Maas., USA, 15"? refractor) "Variations in vapor col. Tillsow, C was largest compared with D&E& most conspicuous 1.3 d after sunrise. Drawing. (time est. fr. given colon.)" NASA catalog weight=3 (average). NASA catalog ID #291.
On 1984 Feb 14 P. Moore (Selsey, UK) thought that there was something odd about Mons Pico in that it looked very bright and gave a good impression of a crater. Cameron 2006 catalog extension ID=241 and weight=5. ALPO/BAA weight=2.
On 1984 Feb 14 P. Moore (Selsey, UK) observed that Plato was darker than the nearby mare and no detail could be seen on the floor or the eastern wall - the later was obscured. At 23:40UT some dimming was still present on the north east wall and still no detail on the floor of Plato. Cook noticed that the eastern floor close to the wall was misty and also noted no detail on the floor. Amery though noted that all parts of the floor were sharp although some darkening was visible in the north west and a hint of obscurtion. The east wall though was quite sharp. Mosely could see the central craterlet but from 8-6 o'clock tricky to define (Foley says that this effect has been seen at this colongitude before). Streak ray across the floor of Plato seen (North) - filter measurements made. Cameron 2006 catalog extension ID= 241 and weight=5. ALPO/BAA weight=2.
On 1977 May 30 at 21:04-02:13UT J.H.-Robinson noted a loss of detail inside Gassendi, however he did not regard this as a TLP. The effect was also seen by P.W. Foley. Cameron 2006 extension catalog TLP ID=16 and weight=0 ALPO/BAA weight=1.
On 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.
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 Jul 30 UT 06:00 Observed by Haas? (NM?, USA, 12?" reflector) "Dark area in S. part wad I=3.7 comp. with #449. Cond. were similar. (phase same. real difference?). (normal here?)"
Lichtenberg 1951 Jan 21 18:19.2-18:38.5 UT observed by Baum (Chester, England). Tiny red spot noticed initially and then faded. Location of spot 31.403N 66.167W. 20cm refractor x90-x100. Seeing fair-extremely good. NASA catalog assigns a weight of 3. NASA TLP ID No. # 542. ALPO/BAA weight=2.
Mare Humboldtianum 1951 Jan 21 20:47-22:00 UT observed by Baum (Chester, England). The appearance of some mountains on the limb appeared to change over time, with some mistiness. ALPO/BAA weight=2.
Madler 1940 Aug 17 UTC 06:45 (Cameron gives 07:30 but Haas says this is wrong) Observed by Haas (New Mexico?, USA, 12" reflector?) "Bright spot on S. rim had I=5.9 on this date but 6.8 on Sep. 16, when observ. cond. were similar (see #473)" NASA catalog weight=4. NASA catalog ID #470. ALPO/BAA weight=3.
Plato 1937 Jul 22 UT 06:20 Observed by Haas (Alliance, Ohio, USA, 12" reflector?) "Floor distinctly greenish, but was gray on June 23, 1937 at 0430 & col.84 (normal?)" NASA catalog weight=4 (high). NASA catalog ID #421. ALPO/BAA weight=3.
Plato 1916 Oct 10 UT 21:00? Observed by M, Maggeni (Florence Obs., Italy) "Reddish shadow spread over part of crater. Looked like vapor (like nitrous vapor) and obscured underlying craters. The Cameron 1978 catalog weight=3 and ID = 365. The ALPO/BAA weight=3.
Archimedes 1940 Jun 20 UT 07:30 Observed by Haas (NM, USA, 12?" reflector) "NE wall (outer) had I=2.5 on this nite but 5.0 on Aug. 18 (see #471 -- both same phase so real diff. 2.5 normal?)" NASA weight=4. NASA ID No. #467. ALPO/BAA weight=2.
Archimedes 1940 Aug 18 UT 03:25 Observed by Haas (NM?, USA, 12" reflector?) NE outer wall had I=5.0, but was I=2.5 on June 20 (see #467) (similar colong.)" NASA catalog weight=4. NASA catalog ID #471. ALPO/BAA weight=2.
Near Censorinus 1964 Apr 26 UT 20:00? Observed by Hopmann (Czchoslovakia?) "Surface brightening somewhat similar to Kopal and Rackham in #779" NASA catalog weight=3 (average). NASA catalog ID #810.
Proclus 1972 Nov 20 UT 20:20 Observed by Farrant (Cambridge, England, 8.5" reflector, x178) "Dark patch in crater. Disappeared by next nite. The normal ring seemed thickened. On Dec. 7. the crater appeared bright. Drawings. (prob. real LTP, nr. FM)" NASA catalog weight=3 (average). NASA catalog ID #1350.
Gassendi 1966 Dec 27 UTC 06:30-07:05 Observed by Kelsey (Riverside, CA, USA, 6" reflector?) "Very faint blink on SW (ast. ?) floor & on another N. of it on NW floor. Obs. considers obs. very suspect" NASA catalog weight=1 (very poor). NASA catalog ID #1006.
Aristarchus 1954 Oct 12 UT 00:55-02:10 Observed by Bartlett (Baltimore, MD, USA, 3.5" refractor x100, S=5-6, T=5) "Pale violet radiance on S.wall SE, E, NE walls, & c.p. At 0409 strong violet tint E 1/2 of fl.very faint on W. 1/2 of floor & W. wall. Dark violet on nimbus & pale violet on Mt. m" NASA catalog weight=4. NASA catalog ID #576. ALPO/BAA weight=2.
On 1989 Oct 14 UT 19:00?, 22:00? P.W. Foley (Kent, U.K., using a 12" reflector) noted that although the brightness of Aristarchus crater seemed steady, that there was just too much detil to see inside the crater than one would expect. Appeared as two craters - Cameron commented that this was often seen by Bartlett. Several observers apparently confirmed this TLP? Cameron 1978 catalog extension ID=379 and weight=5. ALPO/BAA weight=2.
Plato 1878 Nov 09 UTC 21:00 UTC Observed by Klein (Cologne, Germany, 6" refractor?) "Faint, but unmistakable white cloud not seen before." NASA catalog weight=4. NASA catalog ID #207.
Aristarchus 1973 Feb 15 UTC 17:07-19:31 Observed by Theiss (located at 51N 5.67E) "area 4-5 diameters of Aristarchus were coloured clearly yellow-red" 120mm reflector used. Ref Hilbrecht & Kuveler (1984) Moon and Planets Vol 30 p53-61. ALPO/BAA weight=1.
Plato 1973 Aug 13 UT 22:25-22:35 observed by Pedler (Devon, UK). Observer noticed a slight blink on a lighter patch on the floor just beneath the south(?) rim using Moon blink filters. ALPO/BAA weight=1.
David Darling observed bright glittering on Aristarchus. This was followed by a flare up in brightness at 00:38:05 UT in the comet-like ray area of the crater equivalent in intensity to the central peak. Then he saw another one on the north east rim of Aristarchus of the same brightness. A third flare was seen at 00:49UT in south of Herodotus, on the comet-like ray. Another two flares were observed at 00:56UT on the north west rim of Aristarchus. Darling suspects that these effects were due to seeing effects and Cameron agrees. However Weier suspects that they were TLP? Brightness measurements by Weier were for the south west rim of Herodotus 8.0, for a spot at the Cobra's Head 9.0 and 7.5 for C.H. Cameron apparently did not see the flashes but did suspect that the interior of Aristarchus was a bit unusual. Don Spain did not see anything unsual at all. Cameron 2006 extended catalog ID=380 and the observation weight=3. The ALPO/BAA weight=2.
Herodotus 1971 Dec 02 UT 20:40 Observed by Kilburn (Manchester, UK, 8" refractor, x130, Transparency very good with a thin mist, seeing excellent, x130). Bright point (considerably brighter than its surroundings) was seen on the SE of the illuminated floor of Herodotus in white light. It was quite close to the crater rim. The spot had no colour. ALPO/BAA weight=2.
Aristarchus 1967 Dec 16 UTC 22:00? Observed by Farrant (Cambridge, England, 8" reflector) "Crater took on an unusual appearance on inner NE (ast. ?) wall. Showed a very pale blue & the opposite wall a pale red color seen in no other features. Lasted only 10m & survived a change of eyepieces." Seeing=I (Antoniadi). NASA catalof weight=3 (average). NASA catalog ID #1056.
On 2002 mar 29 at 02:20-02:38UT C. Brook (Plymouth, UK, 60mm refractor, x120 - no cloud, slight haze, no wind, seeing good) noticed during first part of observing period that Aristarchus was getting steadily brighter, very much brighter than Proclus. This continued until 02:36UT when it dimmed suddenly over a period of about a minute or so. No colour effects seen. ALPO/BAA weight=2.
On 2002 mar 29 at 02:20-02:38UT C. Brook (Plymouth, UK, 60mm refractor, x120 - no cloud, slight haze, no wind, seeing good) noticed during first part of observing period that Aristarchus was getting steadily brighter, very much brighter than Proclus. This continued until 02:36UT when it dimmed suddenly over a period of about a minute or so. No colour effects seen. ALPO/BAA weight=2. Just as an after thought - was it Aristarchus that was varying, or Proclus?