Limb North? 1881 Jul 04 UT 00:30 Observed by Several observers
(Lebanon, CT, USA, naked eye, alt @ 10 deg) "2 pyramidal protruberances
on upper limb (dark?). Points were darker than rest of moon's face then
slowly faded away (atm ? moon very low)" NASA catalog weight=? NASA
catalog ID #223.
On 1867 Apr 12 at UT 19:30-21:00 Elger (Liverpool? UK, 4" aperture
telescope) observed Aristarchus in Earthshine "grew fainter 7th mag.
star; much fainter in last 15 min. & barely perceptible at 9PM. Had
seen something similar on former occ." The Cameron 1978 catalog ID=152
and the weight=4. The ALPO/BAA weight=2.
In 1878 Oct 04 at UT 20:00 an Unknown observer noted that Hyginus Nova
could not be seen, whereas the night before the crater had the most
conspicuous of all appearances. The Cameron 1978 catalog ID=201 and
weight=3. The ALPO/BAA weight=2.
Williams of the UK, on 1882 Sep 20 at Moon's age 8.4 days, noticed a
spot that had been seen on the 21st and 23rd of the same year with
abnormal brightness. The spot was near Picard. Williams comments the
spot was "nearly as large but a little fainter than Picard, 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.
Plato 1964 May 20 UT 01:00-01:30 Observed by Bartlett (Baltimore, MD,
USA, 2.4" refractor x117, S=6, T=5). "Orange-red color on W. wall.
Vivid" NASA catalof weight=4 (high). NASA catalog ID #813.
Eratosthenes 1976 Jun 06 UT 02:01 Observed by Bartlett
(Baltimore, MD, USA, 3" reflector x54-300, S=5, T=5) "Bowel was
full of shadow but a small 5 deg bright spot on NE floor.
Nothing seen in 1975 at nearly same col. but shadow was deeper."
NASA catalog weight=4 (high). NASA catalog ID #1432.
On 1916 Sep 05 at UT 19:30 Markov (Russia) observed in Plato light on
shadow of the bands at the bottom of the crater. The Cameron 1978
catalog ID=364 and weight=3. The ALPO/BAA weight=2.
Proclus 1969 Nov 18 UT 20:00? Observed by Classen (Pulnitz,
Czechoslovakia, 8" refractor) "Brightened, exceeded normal.
Brightness is monitored relative to Censorinus. (started July,
1969) Obs. thinks all bright craters are variable. (Apollo 12
watch)." NASA catalog weight=2. NASA catalog ID #1216.
ASLPO/BAA weight=1.
On 1995 Jul 07 at UT 04:22 R. Spellman (Los Angeles, CA, USA) noted
that the floor of Copernicus was slightly darker in blue light. The
ALPO/BAA weight=1. This report came from R. Spellman's web site.
On 1995 Jul 07 at UT 04:22 R. Spellman (Los Angeles, CA, USA)
noted that the inside of Bodin darkened in blue light and also
the floor was darker in white light than it was the previous
day. The ALPO/BAA weight=1. This report came from R.
Spellman's web site.
On 1995 Jul 07 at 04:22UT R. Spellman (Los Angeles, CA, USA) noted that
the floor of Proclus looked slightly darker in blue light. The ALPO/BAA
weight=1.
On 1960 Aug? 01 at UT 22:00? an unknown observer detected that Vitello
was illuminated -it should have been in shadow? Cameron says that if
several days before sunrise then the date could have been July through
to December, with August 1st most likely, and ancilary data is
therefore given for this date. The Cameron 1978 catalog ID=729 and
weight=1. The ALPO/BAA weight=1.
Copernicus 1969 Nov 18 UT 21:10-21:11 Observed by Hedervari
(Budapest, Hungary, 3.5" refractor) "Yellowish-red stripe on
inner W. wall (chrom. aberr.? Apollo 12 watch)." NASA catalog
weight=2. NASA catalog ID No. 1217. ALPO/BAA weight=1.
2007 Oct 20 UT 17:31 A.Pink (Basinkstoke, UK) images a flash on
the dark size of the Moon near to Vitello. The
ALPO/BAA weight=1.
Goldschmidt 1969 Nov 18 UT 21:59 Observed by Brandi (Wald, Switzerland,
6" reflector x90) "Brightening -- photo. (the author, WSC, cannot
verify LTP on film. Its brightness similar to other features at same
term. dist. Shadow is anomolous if real -- very narrow streak beside it
& beyond main shadow (Apollo 12 watch)." NASA catalog weight=5 (very
high). NASA catalog ID #1218.
Plato 1878 Oct 05 UT 21:40 Observed by Klein (Cologne,
Germany, 6?" refractor) "Fog in W. part of crater. Faint
shimmer like thin white cloud" NASA catalog weight=4. NASA
catalog ID #203. ALPO/BAA weight=3.
On 1989 Jan 16 at UT 20:00 G. North (Herstmonceux, UK, 30" reflector)
observed Toricelli B to change in brightness and found colour in it. A
10 minute exposure spectrum was taken (Cameron does not have
information on whether anything unusual was recoeded) before clouds
obscured the Moon. Normally a 30 minute exposure would be needed. The
Cameron 2006 catalog ID=345 and the weight=3. The ALPO/BAA weight=3.
On 1982 Mar 04 at UT 20:00 M.C. Cook (Frimley, UK) found Censorinus
(4.6) to be brighter than Proclus (4.0) in white light. The Cameron
2006 catalog ID=164 and weight=4. The ALPO/BAA weight=1.
On 1982 Mar 04 at UT 20:00 M.C. Cook (Frimley, UK) found Proclus
(4.0) to be fainter than Censorinus (4.6) in white light. The
Cameron 2006 catalog ID=164 and weight=4. The ALPO/BAA weight=2.
Plato 1979 Apr 06 UT 18:00-21:00 Observed by Crick (Belgium, seeing II-
III) Part of floor darker than normal and obscuration on inner west
wall - the effect did not change during the observation. Drawing made.
Cameron 2006 catalog ID=49 and weight=3. ALPO-BAA weight=2.
Aristillus 1939 Sep 23 UT 01:00 Observed by Haas? (New Mexico?, USA,
12" reflector?) "Dark area in W. part of floor had I=1.3. comp with I=
1.3, 3.7, 4.0 in #450, 454, & 459, respectively. (albedos disagree at
same phases, so are real anomalies). (normal here?)." NASA catalog
weight=4 (high). NASA catalog ID #461.
On 1987 Mar 09 at UT20:00 M. Mobberley (Sussex, UK) obtained some video
of Mons Pico - apparently these show the mountain with a puzzling
appearance (not sure whether it was the observer who claimed this or
some one who analyzed the tape). The Cameron 2006 catalog ID=300 and
the weight=5. ALPO/BAA=1.
Plato 1970 Dec 07/08 UT 23:30-00:45 UT Observed by Fitton (Oldham,
England, 8.5" refkector, x200, S=G) "Floor blank, yet some craters
should be vis. Outer wall craters showed clearly. (similar to
Bartlett's obs on Nov. 8th, #1278" NASA catalog weight=3 (average).
NASA catalog ID #1279.
Plato 1870 May 10 UTC 22:00 Observed by Birt (England) "Extraordinary
display of lights. Says not effect of sunlight" NASA catalog weight=4
(high). NASA catalog ID #167.
Observed by G.H. Johnstone of Albuquerque, NM, USA on 1954 Nov 05 UT
20:00 (according to Cameron), but 02:00-04:00 according to the
original observation and at colongitudes 34.7 to 35.7 deg. 4"
reflector, x150 used. The obsewrver reported that the western part
(about 1/3rd of the interior) was pitch black with shadow. However
there was a zone about as wide, or perhaps only a fourth of the total
width that was distinctly a lighter bluish shade, almost like twilight.
The shadows of the peaks on the western edge of the rim were clearly
seen crossing this bluish shadowed area. Then this area ended sharply,
and the farside was bathed in light from the rising sun. The shadows of
the peak were sharply defined across the twilight zone, and the edge of
the pitch black shadow was easily defined but not as sharp as the
darker shadows crossing the the blue twilight zone. The observer
checked other craters but did not see this condition in any of them -
they all had the abrupt division between black and white that we would
normally expect to see. Cameron 1978 catalog ID=579 and weight=2.
Reference 1962 edition of ALPO's Journal: The Stolling Astronomer.
ALPO/BAA weight=3.
Censorinus 1969 Nov 19 UT 1922 Observed by Brandli (Wald,
Switzerland, 6" reflector, x90) "Brightening -- photo, (the
author, WBC, cannot verify from photo. It is brighter, but so
are Proc. & Dionys. -- it being between. i.e. Proc. > Censor. >
Dionys. Apollo 12 watch)." NASA catalog weight=5 (very high).
NASA catalog ID #1220. ALPO/BAA weight=1.
P. Moore at 21:10 found the southern wall (and ontothe southern floor)
of the crater to be indistinct. Elsewhere in the crater everything was
sharp. The effect was still seen at 21:42UT, but less strong. A check
was made for colour with aq Moonblink device, but none was seen. There
was still a trace of this effect at 21:44UT, although detail was now
becoming visible. By 21:48UT vertical streaks were seen crossing
the floor from the obscuration area and these were more visible in the
red filter and not in the blue. Cameron comments that undefined patches
on the floor of Plato are not normal. By 21:55UT some craterlets on the
floor started to become visible and the TLP for Moore ended by UT22:23.
P.Foley was alerted by Moore and saw a "amssive dense obsecuration
on the south wall, south floor and south outer glacis to the Mare".
Foley noted that by 21:50UT the effect was fading and finished by
22:03UT. Foley reported an orange translucent haze covering half of the
floor, but floor craterlets could be seen on and off - however his
atmospheric seeing conditions were IV. At 22:00 UT Foley reported the
floor close to the north wall to be "milky or misty". No detail was
visible at 21:15UT and variability in the floor continued until
23:10UT. Hedly-Robinson was aleted at 21:35UT and found no difference
between red and blue views of the area, however he did find that the
south rim was indistinct although this effect had lessened by 22:00 UT
and was normal by 22:17UT. M. Mobberly saw a white spot on the floor at
21:20 UT, whereas he normally would have expected to see craterlets.
Mobberly was alerted at 21:40 UT and took some colour photos. He also
made sketches that showed variability in the floor and dark lines and
patches in the north west corner. However the altitude of the Moon was
low. Cameron mentions that two of the photos show loss of detail at the
south wall and beyond.and also a change in the floor markings.The north
wall at 21:50UT was strangely reddish (didn't think this was spurious
colour). The rest of the wall was sharp at 22:20UT through a yellow
filter. Large bright patch in the centre and rest of the floor was
apparently of the same shading as Mare Imbrium. The above notes are
based upon the Cameron 2006 catalog extension TLP ID 145 and weight=4.
ALPO/BAA weight=2.
Piton 1969 Nov 19 UT 21:15-22:00 Observed by Baum (England,
4.5" refractor) "Traces of cloudiness on E. slope at 2115h.
Increased at 2150h in extent & brightness. Spread onto plain.
Summit & shadow in W. part sharp & clear. (Apollo 12 watch)."
NASA catalog weight=2. NASA catalog ID #1221.
ALPO/BAA weight=2.
On 1964 Jan 24 at 20:00? Scarfe (UK) obtained spactra showing
luminescence? The Cameron 1978 catalog ID=796 and weight=5. The
ALPO/BAA weight=3.
C. Brook of Plymouth UK, using a 4" refractor x216, noticed at UT 20:10
dark patches coming and going (in terms of visibility) on the floor of
Plato. Occasional views of the central cratelet (seen as a white spot)
were glimpsed. The dark patches seen lasted about 1-2 seconds before
fading out during each visibility cycle. Teneriff Mountains were
checked but no sign of seeing effects that might explain the dark floor
patches. By 20:26UT the dark patch effect was fading and by 20:31UT
floor detail was visible. Observations ceased at UT 20:34. Seeing
conditions were II and the Moon was at a high altitude. Other observers
were alerted but came on-line after the effect had finished. ALPO/BAA
weight=1.
At approximately 18:43UT observer noticed that Censorinus, and
its bright apron, appeared particularly brighter than normal.
There was some spurious colour present - but just a redness
along the southernmost extent of the apron visible; could not
detect any blue along the northern edge however, he did do not
suspect the colour to be anomalous. A re-examination at 18:51UT
revealed that the crater had faded and was seen to fade visibly
in real time to normal levels (over about a minute) by 18:53UT.
Other features remained constant and so too did the apparent
spurious colour.
Ramsden 1999 May 25 UT 20:57-21:22 Observed by Brook
(Plymouth, UK, 4" refractor, x216, seeing II-III) "Bright spot
on W wall - brightness variation seen. - At the start it was
bright, then it faded, and towards the end of the observation
it was starting to brighten again". BAA Lunar Section
observation. ALPO/BAA weight=1.
Eratosthenes 1968 Nov 01 UT 01:50-02:06 Observed by Chilton
(Hamilton, Canada, 12" reflector, 300x) "Red glow in the crater.
Weak blink beyond ESE (IAU?) wall. Visually, area would not
focus & gave impression of fog cascading down slope, but no
motion was vis. (Moore has misprint in time in his cat.
extension -- should be 0150-0206)." NASA catalog weight=3. NASA
catalog ID 1106. ALPO/BAA weight=3.
U.K. observers: G. North and P. Foley, both saw a wisp of blue
associated with this crater. Cameron 2006 catalog extension ID=209 and
weight=4. ALPO/BAA weight=3.
Daniell 1979 Jun 05 UT 20:15-21:10 Observed by Price (Camberley,
England, 152mm reflector x64 and x128, seeing III, transparency good)
"Obscuration seen" BAA Lunar Section report.
Daniell 1979 Jun 05 UT 20:15-23:00 Observed by Price (Camberley,
England, 152mm reflector x64 and x128, seeing III, transparency good)
observed that Posidonius lacked sharpness.
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.
Plato 1870 May 11 UTC 22:00 Observed by Birt (England) "Extraordinary
display of lights. Says not effect of sunlight" NASA catalog weight=4
(high). NASA catalog ID #167.
SE of Ross D 1965 Mar 14 UT 07:40 Observed by Cross (Whittier,
CA?, USA, 12" reflector). Crater wall partially obscured;
bright area. NASA catalog weight=3. NASA catalog ID #872.
ALPO/BAA weight=3.
Aristarchus 1969 Nov 20 UT 19:45-20:05 Observed by Becker (Holland, 4"
refractor) "Sharp whiteness on inner W. (ast. ?) side (Apollo 12
watch)" NASA catalog weight=1 (very low). NASA catalog ID #1224.
Gassendi 1969 Nov 20 UT 19:30-19:45 Observed by Becker (Holland, 4"
refractor) "Curious small shadow from NW (ast. ?) wall. (Apollo 12
watch)" NASA catalog weight=1 (very low). NASA catalog ID #1224.
Aristarchus visible just past terminator. West wall was
brighter than normal. Bright flash seen in/on NW wall -
apparently in the same place as Pedler's May 17th sketch.
Cameron 2006 extension catalog ID=146 and weight=4.
Observed by M. Price of Camberley, Surrey, UK with
a 6" reflector and a Moon Blink device. Seeing=III.
Plato 1981 Jun 13 UT 20:48-21:08 Observed by Price (Camberley, England,
152mm reflector, seeing III) Possible Moon blink (red) seen
on north wall. Also the craterlets on the floor could be seen
despite the observing conditions not being optimal. BAA Lunar Section
observation. Cameron 2006 extension catalog ID=146 and weight=4.
ALPO/BAA weight=3.
On 1984 Jan 14 at UT 20:00 P. Moore (Selsey, UK) observed that
Aristarchus was brighter than it normally is at sunrise. No
quantitative measurements were made though. The Cameron 2006 catalog
ID=238 and weight=3. The ALPO/BAA weight=1.
Observer noted a bright spot on the interior west wall that seemed
brighter than what they would have expected. unfortunately the precise
time of this observation was not recorded so the moon-rise and
midnight UT values are used to place a limit on the time of
observation. Images by Shaw taken at UT 1754, 18:45 and 23:13
do not exhibit the effect.
Censorinus 1981 Apr 15 UT 22:15-23:10 M. Cook (Frimley, UK),
using a 12" reflector,found Censorinus to be glowing exceedingly
bright and was brighter than Proclus. It dulled later, but was
still brighter than Proclus. Censorinus was also slightly
brighter in blue than in red light. Cameron 2006 catalog
extension ID=130 and weight=3. ALPO/BAA weight=1.
Aristarchus-Herodotus 1968 Dec 31 UT 03:30-03:45 Observed by Taboada
(Mexico) "Terminator between the two was diminishing in brightness over
edge of Herod. at 0345, 2 darker spots seen over same place. (alerted
by Middlehurst for tidal predict.?)" NASA catalog weight=1 (very low).
NASA catalog ID #1112.
On 1968 Dec 31 at UT 03:30-03:45 Taboada (Mexico) observed the
terminator between Aristarchus and Herodotus was diminishing in
brightness at 03:45UT over the edge of Herodotus. Two darker spots were
seen over same place. Alerted by Middlehurst for tidal predict? The
Cameron 1978 catalog ID=1112 and weight=1. The ALPO/BAA weight=1.
On 1978 May 18 at UT20:45-21:53 J.D. Cook (Frimley, UK, 12"
reflector, x240) observed Promitorium Laplace to have
visually a brown colour - though no Moon Blink (red and blue
filters) effect was detected. Cameron comments that this is
probably a subjective effect - also others have reported
something similar at times. The Cameron 2006 catalog ID=30
and weight=3. The ALPO/BAA weight=1.
Torricelli B 2005 Jan 21 UT 21:21-21:43 Observed by North (Norfolk, UK,
20cm reflector, x64, x128, Seeing IV, Transparency, moderate)
"Torricelli B appeared rather dull with a prominent dark halo of a
strongly bluish tint. The halo extends a few sec of arc beyond the
crater. At 21:21-21:43 crater was varying in brightness but this may
have been due to the seeing? By 21:42 the dark halo was gone. By 21:44-
21:49 UT the crater was brighter and more normal in brightness than
before. By 22:17 UT all was normal. The variations in brightness were
also seen by Cook (Mundesley, UK). Observations by Carbognani (Itlay)
21:20-23:10 failed to find any variations in brightness. Nor did Amato
(CT, USA) from 23:00-23:15 UT."
Plato 1998 Jul 05 P. Moore (Selsey, UK, 15" reflector, x200-
x400, seeing II/III) comments that he is puzzled why the floor
of Plato, which is light gray in shade, looks completely blank
tonight. The ALPO/BAA weight=1.
Barker's Quadrangle (Capuanus) 26W, 34S 1949 Feb 9 UT 20:00?
Observed by Moore (England, 12" reflector) :Quadrangle not seen,
apparently misty. (quad. in Capuanus? see Wilkins & Moore, The
Moon, p124)" NASA catalog ID=514, weight=4. ALPO/BAA weight=3..
M. Cook of Frimley, UK observed a brightening of the crater during
this observing session. The cameron 2006 extended catalog ID=346 and
weight=3. ALPO/BAA weight=2.
Gassendi 1939 Sep 25 UT 01:30 Observed by Haas (New Mexico? 12"
reflector?) "NE part pf c.p. had I=9.4 comp. with I=6.4 (normal? in #
458. under similar obs. cond. (& phase. thus real diff.)" NASA catalog
weight=4 (high). NASA catalog ID #462.
M. Cook of Frimley, UK, noticed Torricelli B to have a blue
tinge inside and outside. No colour had been noticed earlier
on 19-21 Mar. Cameron reports also in her catalog that the halo
around Torricelli B had lost its brilliance as seen on 29th Mar.
Cameron 2006 catalog extension ID=210 and weight=5 - apparently being
confirmed by Marshall, Mobberley and Foley. ALPO/BAA weight=3.
Gassendi 1967 Mar 22 UTC 19:39-19:43 Observed by Mosely (Armagh, N.
Ireland, 10" refractor, x360) "Red color & blink strongly suspected
in small area centred on junction of 3 clefts 1/2 way from c.p. &
ESE wall. Well-defined & did not note change during obs. period.
Clouds terminated obs. till 2120 when it was not seen." NASA
catalog weight=3 (average). NASA catalog ID #1018.
Torricelli B 2005 Jan 22 UT 01:00 Observed by Serio (Houston, TX, USA,
6" Cassegrain, x150 and x180, Seeing 3, high deck of Cirrus clouds)
"Torricelli B hard to make out in the videos taken, but images taken
through cloud. A check on the image received by the coordinator shows
that Torricelli B is in fact visible, but perhaps not very bright. A
later observational sequence of images by Raul Salvo (Montevideo,
Uraguay UT 03:15-03:23) showed similarly that Torricelli B was dark,
and there was some brightness variability although the
background setting on these was low" An ALPO report.
G. Ward (a lunar observer for 15 years) observed an area just south
west of Mersenius C to be blurred and in a greenish cloud. The green
colour was more like that of dead grass than one gets from a neon bulb.
The effect was seen from 04:50-04:57UT, but could have been going on
before it was first noted at 04:50-UT. Seeing was 6-7/10 4" Refractor
(2 element). refractor had been used hundreds of hours before (over a
10 year period) with no similar colour was seen. The observer checked
other areas but did not see any similar effects. They also rotated and
changed eyepieces, but this made no difference to the TLP. The TLP site
seen was picked up on an image taken earlier at 04:47UT by W. Bailley,
from Sewell, NJ, USA. Unfortunately the area concerned, a mountain on
the image, was saturated and so we cannot tell if a colour was present
there and the seeing was poor.
On 1989 Sep 12 at UT00:58-02:25 D. Darling (Sun Praire, WI, USA, 12.5"
reflector, x159, S=7/10) observed similar light conditions to 1989 Jul
15. At 02:00 he observed pink on the south west wall of Aristarchus
crater. At 01:24UT the Aristarchus ray was yellowish, however the
entire Moon had a grey-yellow tinge of colour. Chromatic aberation was
observed at 01:56UT. By comparison Gassendi was checked and had no
colour. At 02:10 the crater wall of Aristarchus was unusual and was
quite different in appearance to rims of other craters. The cameron
2006 catalog ID=375 and the weight=1. The ALPO/BAA weight=1.
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.
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.
Aristarchus 1975 Oct 16 UT 20:00? Observed by Foley (Kent,
England, 12" reflector) "Deep blue-viol. spot in NW (IAU?)
interior corner." NASA catalog weight=3. NASA catalog ID #
1413. ALPO/BAA weight=1.
Observed by Firsoff (Somerset, England, 6.5" reflector? x240) "Red
glow." NASA catalog weight=4 (high). NASA catalog ID #573.
On 1987 Jan 11 at UT 18:15-23:00 P. Grego (Birmingham, UK, 6"
reflector, seeing=III) sketched Aristarchus crater and saw two
luminous circular patches on the exterior west wall - these
were less bright than the inner wall but brighter than the
outer wall. The Cameron 1978 catalog ID=292 and weight=5.
ALPO/BAA weight=2.
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.
Cobra Head 1949 Feb 10 UT 00:00? Observed by Thorton (Northwich,
England, 18" reflector) "I was examining the Cobra Head of the Schroter
Valley, when I noticed what seemed to be a diffuseed patch of thin
smoke or vapour, apparently originating from the valley on the E. Side
where the landslip is, and spread over the edge on to the plain for a
short distance. Every detail of the edge of the valley was perfectly
clear and distinct except where this patch occurred, but there the
definition was poor and very blurred" NASA catalog
weight=4 and catalog ID #515. ALPO/BAA weight=1.
Bullialdus 1974 Sep 27 UT 22:45-23:40 Observed by Findlay, Ford
(Dundee, Scotland, 10" refractor, 150x, 180x, filters) "Saw yellowish-
orange color in crater. After clouds passed at 2300h color still there
& gave a slight blink which no other craters did. Not seen in red
filter, dark in blue. Ford saw it along ridge fr. c.p. to SW wall.
Alert did not bring confirm. as clouds intervened for all others." NASA
catalog weight=4. NASA catalog ID #1394. ALPO/BAA weight=3.
Torricelli B 2005 Jan 22 UT 03:15-03:23 Observed by Raul Salvo
(Montevideo, Uraguay UT 03:15-03:23) showed that Torricelli B
was dark, and there was some brightness variability although the
background setting on these images was low and seeing could
account for the brightness variation? An ALPO report.
On 1990 Oct 1st at 00:44-01:24UT D Darling (Sun Praire, WI, USA)
observed that Gassendi still had a blink effect when viewed through
blue (Wratten 38A) and red (Wratten 25A) filters. No effect was seen on
Aristarchus. Gassendi was brighter in the red filter and this was
confirmed by Weier. Sketches were made and brightness measurements
taken. Both observers used a 12.5" reflector x159. At 01:00UT the NW
wall was 7.5, the SW wall 8.0, the S. wall 7.5, the floor 6.0, the
outer E. wall 8.0, the N. floor 5.5. Gassendi A W. wall was 9.5,l
Aristarchus W. floor was 8.0, NW wall 8.0, shadowed floor 0.0, E. outer
wall 7.0, NBP 5.5, area between Aristarchus and Herodotus 6.0, and the
comet like tail: 8.2 on the E. and 8.5 on the W. The Cameron 2006
catalog extension TLP ID=412 and weight=5. The ALPO/BAA weight=4.
Plato 1870 May 12 UTC 22:00 Observed by Birt (England)
"Extraordinary display of lights. Says not effect of sunlight"
However an article by Nigel Logshaw in the Feb 2014 LSC suggests
that it was probably just normal fine scale spots and streaks on
the floor of the crater. NASA catalog weight=4. ALPO/BAA weight=
1. NASA catalog ID #167.
Cobra Head 1955 Sep 28 UTC 23:00 Observed by Bestwick (England? 6?"
reflector x240) "Diffused brown patch of smoke or vapor, almost
obscured -- appeared over plain for a short distance."NASA catalog
weight=3. NASA catalog ID #612.
Plato 1981 Jun 14 UT 21:58 Observed by Foley (Kent, England,
11.75" Newtonian, Seeing III, Transparency Good) "Obscuration
Seen" BAA Lunar Section Observation. ALPO/BAA weight=2.
Foley (Kent, UK) saw the west wall dull and stongly coloured. Moore
(Sussex, UK) saw the wall as normal. However Cameron points out that
Foley (Kent, UK) is a lot more Blue/UV sensitive than Moore. Mosely
(Covington, UK) at 22:10 UT noticed a brightening on the East wall and
at 01:10-01:25 UT suspected that the interior had a weak yellow-green
cast to it. Cook (Frimley, UK) states that orange colour was within the
interior crater, but green beyond the east rim at the 9 O'Clock and
the south east corner to floor blue/mauvre beyond the northern rim
NW/WSW. Foley sstates that orange and blue/mauvre might be spurious
colour, but green one cannot get this way. Cameon suggests chromatic
aberatons as a possibility but thinks that the observers concerned were
experienced enough to recognize this if it were the cause. Cameron 2006
catalog extension ID=239 and weight=0. Moore used a 15?" refletor and
Foley used a 12" refletor. Mosely experienced II seeing and good
transparency. Cook had III seeing and also good transparency. P.
Grego made an observation this night too. The
ALPO/BAA weight=2.
Plato 1986 Dec 13 UT 20:30 Observed by A. Cook (Frimley, UK,
seeing III) North East quadrant of Plato the crater was blurred
and ill-defined. Also no craterlets visible anywhere on the
floor of Plato until the central craterlet was just glimpsed
later at 23:00-23:45, though seeing now III-IV (cirrus at times
in the sky). At this later time the NE rim was less blurred than
before. ALPO/BAA weight=1.
Herodotus 1969 Jan 01 UT 03:15 Observed by Taboada (Mexico)
"Brightness in edge of crater dimmed & a heavy darkness was
noted thru course of cleft (Schroter's Valley?). (alerted for
tidal predict.?)"NASA catalog weight=1. NASA catalog ID #
1113. ALPO/BAA weight=1.
On 2016 Jul 17 UT 03:49 P.Zeller (ALPO, Indianapolis, IN, USA)
imaged a pseudo-peak with shadow on the floor of Herodotus,
however the image scale and quality of this colour image were
not great and the observer suspects that it might be an
imaging artefact. ALPO/BAA weight=1.
P. Foley of Kent, UK, using a 12" reflector, seeing=III-II, noticed
that initially that the crater was pretty dull and that the floor
was a slate blue-gray in colour at 22:45UT. A noticeable green spot
inside the crater on the south east appeared at 22:25UT and vanished
at 00:50UT. Cameron notes that one doesn't get green with spurious
colour. Crater Extinction brightness measurements were made at 22:00 UT
(reading=2.8) and at 23:45UT (reading=3.7). The crater dropped in
brightness from 3.7 to 2.8 at 23:50UT and remained lower until 3.0 at
23:50-03:15 UT. A graph was produced and showed Proclus and Censorinus
at similar brightnesses, but Aristarchus variable. The Earthshine was
0.3. Cameron 2006 Extension catalog ID=31 and weight=5.
ALPO/BAA weight=3.
Cobra Head 1967 Mar 23 UT 18:40-20:47 Observed by Sartory,
Moore, Moseley (Farnham, England, 15" reflector (Sartory) seeing
very poor & 10" refractor in Armagh, N. Ireland (Moore & Mosely)
x360 - seeing Fair to Poor) "Red patch seen intermittently;
moon-blink from 1916-2047h. Position agreed with Sartory who
alerted them to Aris. area; checks on others were neg." NASA
catalog weight=5. NASA catalog ID 1020. Then Aristarchus 1967
Mar 23 UT 18:40-20:30, 21:30 by Marsh and Farrant (Cambridge,
England, 8" reflector, x330). "Suspected colour on SW (ast.)
wall. Farrant saw color in crater, completely independently,
(inform. suggests same phenom. as seen by Moore & Moseley tho
they said Cobra head). NASA Catalog weight=5. NASA catalog ID #
1021. ALPO/BAA weight=3.
Gassendi 1967 Mar 23 UTC 18:40-18:50 Observed by Sartory (Farnham,
England, 15" reflector) "Heavy blink on inner S. wall. Moved toward N.
at 1845, faded at 1850." NASA catalog weight=3 (average). NASA catalog
ID #1019.
Johnson, of Des Moines, Iowa, USA, using a 7" reflector and an 8"
refractor, saw a bight streak. The observer looked later, but it was no
longer visible. Cameron thinks that it might have been a reflection
from the wall. Cameron 1978 catalog ID=423 and weight=1. ALPO/BAA
weight=1.
D. Darling of (Sun Praire, WI, USA, using a 12.5" reflector at x150,
noticed a hint of red? colour on the south west rim of Aristarchus.
Brightness measurements were normal for Aristarchus and Herodotus. No
colour seen elsewhere e.g. Prom. LaPlace. The colour on Aristarchus had
gone by 01:15UT. Cameron 2006 catalog extension ID=414 and weight=3.
ALPO/BAA weight=3.
A fleeting faint reddish patch was seen in Gassendi
at 21:15UT. This observation has an ALPO/BAA weight of 2.
Rays of(?) (in?) Herodotus 1955 Oct 28 UTC 18:30 Observed by Kozyrev
(Crimea, Russia, 50" reflector, spectragraph) "Spectrum 3934A (K of
Ca). 3964 (H of Ca) change in luminosity. 13% in H, 19% in K, 2% in H,
3% in K. in photo-line-depth method" NASA catalog weight=5 (very high).
NASA catalog ID #622. ALPO/BAA weight=5.
Mersenius 1975 Jun 21 UT 21:50-22:45 Observed by McConnell
(Northern Ireland, 6" reflector) Moore? (Sussex, Enland, 15"
reflector, 5" refractor, S=F), Reading (Rushden, England, ?
14" reflector) and Foley (Kent, England, 12" reflector, S=P)
"McConnell saw an obscur. starting at 2150h which disappeared
at 2245h. Moore(?) alreted, saw no anomaly in 15 in refl. &
5-in refr. under fair conditions from 2209-2228h. Reading
reported neg. fr. 2250-2345h (after phenom.). Foley reported
color in it but also a crater to S. of it & Aris., prob. due
to seeing conditions." NASA catalog weight=5. NASA catalog
ID#1408. ALPO/BAA weight=3.
1954 Aug 11 observed by Firsoff (Somerset, UK, 6.5" reflector,
x200) "Brilliant in red filter, variable)" NASA catalog
weight=4. NASA catalog ID #570. ALPO/BAA weight=3.
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.
Aristarchus-Herodotus 1971 Sep 02 UTC 20:00 Observed by Ayeau
(Paris, France, 12" reflector, x100) "Brownish-red or maroon
seen on Aris. W.wall ridge to Herod. on S.wall of Herodotus"
NASA catalog weight=2. NASA catalog ID #1311.
ALPO/BAA weight=2.
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 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.
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.
Plato 1870 May 13 UT 22:00? Observed by Pratt (---), Elger (Liverpool,
England), (Gledhill (Brighton, England) "Extraordinary display of
lights. 27 seen by Pratt, 28 by Elger, only 4 by Gledhill. (independ.
confirm. ?" NASA catalog weight=5 (very good) NASA catalog ID #168.
A bit more of a detailed report is as follows: "Upon the 13th of May,
1870, there was an "extraordinary display," according to Birt: 27
lights were seen by Pratt, and 28 by Elger, but only 4 by Gledhill, in
Brighton. Atmospheric conditions may have made this difference, or the
lights may have run up and down a scale from 4 to 28. As to
independence of sunlight, Pratt says (Rept. B.A., 1871-88), at to this
display, that only the fixed, charted points so shone, and that other
parts of the crater were not illuminated, as they would have been to an
incidence common throughout.(30) In Pratt's opinion, and, I think, in
the opinion of the other observers, these lights were volcanic."
ALPO/BAA weight=4.
Mobberley of Suffolk, UK, and using a 14" reflector and
seeing=I-II saw yellowish/brown streaks within Aristarchus. A
sketch indicates that these extended from a region on the east
floor to the north west corner, and then finally onto the
bands on the west wall. Cameron 2006 extension catalog ID=132
and weight=4. ALPO/BAA weight=1.
Plato 1981 Jun 15 UTC 21:30 Observed by Amery (Reading, England, 25cm
reflector, seeing Antoniadi IV-V) At the 4 O'Clock position on the
North West corner?, there was a dark smudge which reached from the
floor across and over the wall and onto the terrain outside the crater.
Foley, alerted by Amery, saw a dark show-like patch in the crater's
north west corner, again lying across the rim. 2006 Cameron catalog
extension ID=148 and weight=4. Foley used a 12" reflector and seeing
was III-V. ALPO/BAA weight=3.
On 1964 Jan 27 at 21:00? Scarfe (UK) obtained spactra showing
luminescence? The Cameron 1978 catalog ID=797 and weight=5. The
ALPO/BAA weight=3.
Manilius 1968 Nov 04 UT 00:15-00:30 Observed by Jean et al. (Montreal,
Canada, 4" refractor, 6" reflector) "Extremeley bright flash on Men. &
Man. each." NASA catalog weight=2 (low). NASA catalog ID #1101.
Menelaus 1968 Nov 04 UT 00:15-00:30 Observed by Jean et al. (Montreal,
Canada, 4" refractor, 6" reflector) "Extremeley bright flash on Men. &
Man. each." NASA catalog weight=2 (low). NASA catalog ID #1101.
Plato 1874 Jan 01 UT 20:00? Observed by Pratt (England?)
"Unusual appearance" NASA catalog weight=1. NASA catalog ID #
183. ALPO/BAA weight=1.
1982 Mar 08 Daniell UT 22:49-22:57 P.Madej (Hudersfield, UK) -
A colour and brightness anomaly was seen a TLP alert was put
out. Cameron 2006 catalog extension weight=165 and weight=3.
ALPO/BAA weight=2.
Aristarchus. 2024 Mar 23 UT 22:08. G.Vega (Argentina, Oro
Verde - 20cm f/5 Newtonian on an EQ5 Goto mount - two colour
cameras used: a Player One Ceres C & a Nikon D5100).
Colour images show a region of blueness from the W. rim of
Aristarchus and the NE of Herodotus (maybe also on the inner
SE rim of Herodotus?) i.e. generally SE of the Cobra's Head.
Blue colour is usually present on the rim of Aristarchus and
to the north - but I don't recall seeing such strong blue
colouration in this region before? No other craters exhibit
this blue colour. As the colour is present in two images,
taken with different cameras it looks genuine. Two other
colour images, at lower resolution, were taken from Oro Verde,
by W.Elias, at 23:06 and 23:18, but neither of these exhibit
this blue colour - but that maybe a resolution issue? ALPO/BAA
weight=3.0
"Brightening in blue filter, 1st for seconds, later for mins". NASA
catalog weight=4 (high). NASA catalog ID #574.
Plato 1971 Nov 01 UT 19:35-20:35 Observed by Kidd (S.Shields,
UK 16" reflector, S=G), Kirsopp (UK), Fitton (Lancashire, UK,
8" reflector x200) "NW (IAU?) rim, small area of obscur. &
bright spot adjacent to it. Was normal at 2035h. Kirsopp
confirmed. Fitton saw nothing unusual in blink patrol. (blink
device detects color rather than brightness)" NASA catalog
weight=4. NASA catalog ID #1318. ALPO/BAA weight=1.
Aristarchus 1975 Oct 18 UTC 20:00? Observed by Foley (Kent, England,
12" reflector) "Deep blue-viol. spot in NW (IAU?) interior corner."
NASA catalog weight=3 (average). NASA catalog ID #1415.
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?)"
Aristarchus and Herodotus UT 20:00? Observed by Areau (Paris, France,
12" reflector x100) "Maroon color covering the ridge(?) E (ast. ?) &
the ridge(?) S. of Herod. In 3 or 5 secs. Cloud disappeared after 10
min." NASA catalog weight=3 (average) NASA catalog ID #1312.
On 1979 Aug 06 at 22:24-22:54 P.Madej (Hudersfield, UK, 6"
reflector. Purple Wratten 35, and Yellow Wratten 15 filters
used) Orange glow seen (at x73) on west side of crater, near the
central peak. The central peak was coloured too at x110. At
22:32 (x75) the central peak was brighter than the rest of the
area wrough the yellow filter. At 22:34UT at x73 everything
looked OK through the purple filter. The TLP was still visible
at 22:54. ALPO/BAA weight=1.
Schickard 1940 May 20 UT 20:00 Observed by Moore (England, 12?"
eflector) "Fog on floor -- milky appearance, less pronounced
than on 8/2/39 (see #456)." NASA catalog ID #465. NASA catalog
weight=4. ALPO/BAA weight=2.
Plato 1971 Jan 10 UTC 20:17-20:42 Observed by Taylor (Slough, England,
8.5" reflector) "Blink (dark gray to black), 13x3km diam. on E. wall &
floor in indentation in wall. Smaller by 2028 h. gone at 2035h.
Reappeared at 2028h & gone completely at 2042h)." NASA catalog weight=3
(average). NASA catalog ID #1282.
Mare Humboldtianum 1951 Jan 21 20:47-22:00 UT observed by Baum
(Chester, England). The appearance of some mountains on the
limb appeared to change over time, with some mistiness. ALPO/BAA
weight=2.
Aristarchus-Herodotus 1969 Jan 03 UT 03:20-03:50 Observed by
Taboada (Mexico) "Brightness between craters dimmed at 0345.
Change in colouration in N. part of Aris. -- gray & slightly
pinkish. Became more remarkable at 0350 in almost all the
extension of the cleft, (Sch. Vall. ?)." NASA catalog weight=3.
NASA catalog ID #1114. ALPO/BAA weight=3.
Aristarchus 1972 Oct 21 UT 2:10-22:45 observed by Schnuchal
(52.5N, 13.25E, 600mm f/11.7 reflector, T=1, S=3) "Bright spot
with maximum intensity at 22:10 UT diminution in brightness
well observable" - Hilbrecht and Kuveler, Earth, Moon &
Planets, 30 (1984),p53-61. ALPO/BAA weight=1.
On 1964 Jan 28 at 21:00? Scarfe (UK) obtained spactra showing
luminescence? The Cameron 1978 catalog ID=798 and weight=5. The
ALPO/BAA weight=3.
G.Amery (Reading, UK, seeing=II) saw a brilliant white rim,
bands and central peak. There was also a clearly seen white
glare like feature over the ESE wall that had a direction
opposite to the crater interior bands. Cameron states that
Foley says that this is usual. High CED brightness readings
obtained. M.Cook of Frimley, UK, took CED measurements at
23:35UT and recorded a brightness of > 4.9. Reported a
reversal of spurious colour - Cameron suspects that this was a
local effect. No spurious colour noticed by anyone else.
However the brightness of the crater was confirmed by other
observers. Mosely suspected a brightness change on the inner
east wall at a relative position of 8 O'Clock. Cameron 2006
extension catalog ID=259 and weight=4. ALPO/BAA weight=3.
Aristarchus 1973 Sep 11 UTC 20:48-21:06 observed by Pasternak
(53deg 20'N, 7deg 30'E, 75mm reflector T=1, S=3) "reddish
colours at the S of Aristarchus from 20.48-21.00 U.T., area
spread to the region E of the crater at 20.57 U.T.,
disappeared there at 21.04U.T., no colours after 21.06 U.T." -
Hilbrecht and Kuveler, Earth, Moon & Planets, 30 (1984),
p53-61. ALPO/BAA weight=1.
Aristarchus 1968 Mar 14 UT 01:32-02:06 Observed by Olivarez, Maley,
Etheridge (Edinburgh, TX, USA, 17" reflector, x125 + Moon Blink) and
Corralitos Observatory (Organ Pass, NM, USA, 24" reflector, Moon Blink)
"S=5 (F-G) for the TX observations. "Trident Moon Blink on S. wall
creet & c.p. & white spots in crater. No color seen vis. Blink not seen
earlier or later. Other craters blinked some but not as strongly.
Only Aris. areas blinked when Moon blink was moved around. Observers
consider blinks real. Alt. of moon was 50 deg. Drawings. Corralitos
say they did not confirm, but they rep't Copernicus, not Aris." NASA
catalog weight=5 (very high). NASA catalog ID #1062.
Plato 1967 Feb 24 UT 04:21 Observed by Kelsey (Riverside, CA,
USA, 8" reflector?) Using an Eng. moon blink device, discovered
red brightest on NNE wall summit - duration 10min. NASA catalog
weight=3. NASA catalog ID #1017. ALPO/BAA weight=3.
Aristarchus 1961 Jun 27/28 23:00?-01:00? Observed by Granger &
Ring (Italy). "Enhancement of Spectrum in UV at CaII similar to
May obs." NASA catalog weight=5. NASA catalog ID #741. ALPO/BAA
weight=3.
Enhancement of spectrum in UV and CaI recorded on photoelectric
spectrometer scans by Grainger and Ring in Italy. Effect seen on
Aristarchus and a ray near Bessel (approx 17E, 22N). Cameron
1978 catalog ID=740 and weight=5. ALPO weight=3.
Proclus 1955 Aug 03 UTC 04:13-04:40 Observed by Bartlett (Baltimore,
MD, USA, 5" reflector, x180, S=5, T=5) "Floor blackish 2 intensity but
in green filter assumed a distinctly mottled or flocculent appearance
-- seen only in green. Neither blue nor red had any effect, but on
previous eve. green light had not produced such an appearance." NASA
catalog weight=4 (good). NASA catalog ID #602. The ALPO/BAA weight=3.
On 1964 May 26 UT 04:10-04:35 Bartlett (Baltimore, MD, USA, S=5, T=5).
observed that Aristarchus had a strong blue-violet glow on the east
wall and EWBS, with a strong violet tinge on the nimbus. Crater was
hazy, could not focus it in red, green or blue light. The Cameron 1978
catalog ID= and weight=4. The ALPO/BAA weight=2.
Aristarchus 1976 Jun 12 UT 05:21 Observed by Bartlett (Baltimore. MD.
USA, 4.5" reflector, 40-225x, S=5, T=3, "Deep viol. tinge in N. 1/2 of
nimbus. Faint blue-viol. radiance (gas ?) on E. - NE wall along crest.
No color elsewhere, nor on plateau m." NASA catalog weight=4 (high).
NASA catalog ID #1435.
Aristarchus vicinity 1842 Oct 18 UT 23:00? Observed by
Gruithuisen (Munich, Germany) "Mingling of all colors in small
spots in W. & NW of crater. (interposition of year dates? was #
101 --1842 prob. correct." NASA catalog weight=4. NASA catalog
ID #121. ALPO/BAA weight=3.
F. Graham took some photos of the Cobras Head and found a blue cloud
about 50 km in diameter and scattering light - Cameron says that
this indicates high density. Darling found the Cobra's Head obscure and
variable "clear and bright to diffused". Cameron was alerted observed
(02:40UT) variations with periods of approximately 30 seconds, and
thought that she could see a red tinge on the east rim of Aristarchus -
checks elsewhere found no other colours. Darling found that a blue
filter enhanced the effect and a red filter made it disappear. There
was a blink at 02:55UT but no blink in the Cobra's Head, which looked
fuzzy and lacking in detail. The effect was confirmed by Weier, who
also saw two dark spots in the Cobra Head in blue but not in red light.
The brightness of the Cobras Head was 6.0, Herodotus floor 5.5, NW wall
7.5, South wall, 7.0, Aristarchus south wall 9.0, west wall 9.0, south
wall 7.0, East wall 8.0, and the central peak 10.0. Observer details
were as follows: Darling (Sun Praire, WI, USA, 12.5" reflector, x159,
S=9/10). D. Weier (Sun Praire, WI, USA, 12.5" reflector, x159, S=
9/10), W. Cameron (Sedona, AZ, USA, 8" reflector x110 and x220, T=6 and
S=6) F. Graham (E.Pittsburgh, PA, USA, 7" refractor, thin haze).
Cameron 2006 catalog ID=415 and weight=5. ALPO/BAA weight=4.
On 1897 Oct 10 at UT 19:00 Pickering (Cambridge, Mass. USA, 15"
refractor?) observed in Shroter's valley and the vicinity, "Variations
in vapor col. change in direction of cloud rising from F is marked
(time est. fr. given colon.)" The Cameron 1978 catalog ID=292 and the
weight=3. The ALPO/BAA weight=2.
Near Censorinus 1964 Apr 26 UT 20:00? Observed by Hopmann
(Czchoslovakia?) "Surface brightening somewhat similar to Kopal and
Rackham in #779" NASA catalog weight=3 (average). NASA catalog ID #810.
On 2000 Jun 16 UT 20:37 C. Brook (Plymouth, UK, 60mm
refractor, x117 & x40, seeing good, transparency excellent)
observed abright spot on the north rim of Mare Crisium (57E,
25N). It was comparable to the illuminated rim of Proclus in
brightness. No colour seen. The spot was not visible the next
night. The ALPO/BAA weight=1.
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.
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.
Lichtenberg 1951 Jan 22 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=3.
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.
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.
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.
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.
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.
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.
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
Plato 1967 Nov 17 UTC 18:36-18:50 Observed by Moore, Moseley
(Armagh, Northern Ireland, 10" refractor x260) "Faint blink
under SW wall. Nothing seen vis. Gone by 1839h. Reappeared at
1841, then gone by 1850h. Checks till 0200h were neg. Obs.
dubious of reality of phen." NASA catalog weight=2. NASA catalog
ID #1054. ALPO/BAA weight=1.
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.
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.
Mobberley noticed that Torricelli B was bright and had an even brighter
spot on the inner north wall. The observation was made from UT19:45-
21:40 using visual and video techniques. There was also a bright region
NNE of Toricelli B, that was noticed. Foley examined the video and
found that the crater faded in brightness over time and also the bright
area to the NNE was not as bright on video as had been seen visually.
Foley speculates that because the CCD camera was sesnitive to the near
IR that maybe the spot was blue?. Foley observed from 21:12-21:21UT and
also saw the bright spot on the inner north wall - but saw a blue halo
around the crater. Response in blue filter, darkening over whole
region. Brightness measures with a crater extinction device (CED)
indicated that the crater was 80-85% the brightness of Censorinus.
There was a bright area NNE of the region. M. Cook observed 22:10-
22:16UT (15cm reflector and seeing III-IV) and also saw that the crater
was very bright indeed with a spot NNE of the region (same position as
28/28 1985 observation) - suspected that the crater might have been
brighter than Censorinus, but judgement effected by seeing. In a blue
filter the crater dulled leaving the bright spot prominent (but only
during a good moment of seeing) - therefore had some suspicion of
seeing effects. At 01:00-01:04UT M. Cook used a 12" reflector on the
area, but the seeing was even worse - but did manage a check of the
brightness of Torricelli B to Censorinus and now made it one quarter of
that of Censorinus and no sign of the crater dimming in the blue as had
been seen earlier in the 6" refletor. A. Cook (Frimley, seeing V) at
21:15UT (Dec 27) thought that Torricelli B looked normal and saw no
colour. At Dec 28 at UT 00:02-00:25 A. Cook obtained some CCD images
through red+IR (Wratten 25) and IR (Wratten 87) but found no colour
differences, though there was a very slight hint that a brightness fade
may have occurred between those two observing times. Note that this
report does not have an entry in the Cameron 2006 Extension Catalog.
The ALPO/BAA weight=4.
Cobra Head 1955 Oct 31 UTC 19:00 Observed by Milligan (England?) "Dark
blue obscuration" NASA catalog weight=3 (average). NASA catalog ID 624.
Aristarchus 1976 Aug 11 06:44 Observed by Bartlett (Baltimore, MD, USA,
4.5" reflector, 45-300x, S=4-3, T=4) "Pale viol. radiance (gas?) on
plateau m. Dark viol. tinge on nimbus. C.p.=10 deg walls=8deg, & all of
floor=8 deg. W.wall out of focus due to haziness (gas?)." NASA catalog
weight=4 (high). NASA catalog ID #1441.
On 1983 Jan 29/30 at UT20:35-01:00 Sykes (UK?) observed that
Linne appeared to brighten for approximately 20 min and had the
appearance of a point (confirmed). This observation was made
during a major Torricelli B TLP. The Cameron 2006 catalog ID=198
and the weight=5. The ALPO/BAA weight=2.
Torricelli B 1983 Jan 29/30 UTC 20:35-02:30 Observed by Foley (12"
reflector, seeing Antoniadi II, Transparency=good, no spurious colour
seen), Moberley (14" reflector, seeing Antoniadi II, transparency
excellent, spurious colour strong), Cook, J & M (12" reflector, seeing
Antoniadi II-III, transparency moderate). All observers based in
southern England. "Initially crater brightest feature on the Moon, then
it faded. Strong colour also seen by all observers e.g. green-blue to
violet. Report of observations written up in JBAA Vol 100, No. 3, p117
123, (2000) - probably one of the best reorted TLP". The Cameron 2006
catalog ID=198 and weight=5. The ALPO/BAA weight=5.
On 1984 Feb 17 at 19:45-22:20UT P. Madej noticed colour in Aristarchus
and telephoned the BAA Lunar Secton TLP network. Mosely at 21:15UT
observed that Aristarchus was both bright and fuzzy - there was some
spurios color (red on south and blue on the north) but this was
replaced by violet. By 21:30UT (transparency=fair) the centre of the
crater was bluish and the west wall creamy white. the north and south
walls were brilliant white. By 22:00-22:30 UT the seeing had improved
and the crater looked unusual - now the centre was violet and the west
wall duller, off-white. By 05:35UT the crater was difficult to define
according to Cook - 4 bands could be seen under II seeing and the north
rim was fuzzy and less bright than the east wall (this was hazy). P.
Moore observed that the crater was normal at 04:00UT. Cameron 2006
catalog extension ID=242 and weight=3. ALPO/BAA weight=2.
On 1984 Feb 17 at 19:45-22:20UT P. Madej (England, seeing=III-
IV, x50)noticed that the crater Reinhold had a blood red spot
on the northern terraces, at the base of the inner wall in a
summit crater on the last of a crater chain or ridge
descending from the top to floor". Cameron 2006 catalog
extension ID=242 and weight=3. ALPO/BAA weight=3.
Proclus 1972 Nov 21 UT 21:30 Observed by Farrant (Cambridge, England,
8.5" reflector, x130) "Thickened bright ring remained, but the dark
patch had disappeared. (dark patch prob. real temporary phenom. as it
was seen nr. FM when contrasts are strongest, yet disappeared" NASA
catalog weight=1 (very low). NASA catalog ID #1351.
On 1983 Jan 29 at UT22:09 M.Mobberley (Sulfolk, UK, 14" reflector)
noted that Arago B had a slight tinge of violet colour, and was a lot
less (bright?) than Torricelli B's blueness. Other craters checked but
were not showing any blue colour. The Cameron 2006 catalog ID=198 and
weight=5. The ALPO/BAA weight=3.
On 1983 Jan 29 at UT22:09 M. Mobberley (Suffolk, UK), found that Moltke
crater was "exceptionally bright". Other craters (apart from Arago B
Torricelli B etc) appeared normal. The Cameron 2006 catalog ID=198 and
the weight=5. The ALPO/BAA weight=2.
CCD images taken through Wratten 25 (red+near IR) and 87
(near IR only) filters. Between 00:02 and 00:25UT there
was some slight evidence that a fade may have taken place
however careful analysis by Cook casts doubt on this.
Probably it was more related to a degradation in image
quality due to seeing than a true TLP. An ALPO/BAA
weight of 1 has been assigned.
Aristarchus 1973 Oct 12 UTC 18:13-18:45 observed by Pasternak "Bright
region of the S. of the crater, color was red." - Hilbrecht and
Kuveler, Earth, Moon & Planets, 30 (1984), p53-61. ALPO/BAA weight=1.
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.
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.
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.
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.
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. NASA catalog ID #165.
ALPO/BAA weight=1.
Schickard 1939 Aug 02 UT 00:01 Observed by Moore (England,
12?" reflector) "Floor milky, walls almost vis. 2 bright pts.
in area. not extending to extreme w.part of floor" NASA
catalog ID #456. NASA catalog weight=4. ALPO/BAA weight=3.
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.
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.
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.
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.
Peirescius 1985 Dec 28 UT ~20:56 (Col. 112.5) H. Hill (UK)
observed that this crater was piercingly bright. Repeat
colongitude observations on later dates failed to show a
similar effect. ALPO/BAA weight=2.
Gassendi 1940 Aug 20 UT 03:25 Observed by Haas (NM?, USA, 12"
reflector?) "Largest bright spot on SE pt. of floor had I=8.6
(real changes? see @ '#649, 474, & 475, all similar change)."
NASA catalog weight=4. NASA catalog ID #472. ALPO/BAA weight=2.
Aristarchus 1976 Aug 12 UT 07:30 Observed by Bartlett (Baltimore, MD,
USA, 4.5" reflector 45-225x, S=6=3, T=5) "Nimbus around c.p.=2deg,
S.floor=6deg & was red; rest of floor=8deg. This is only tint in
Aris.). Tonite saw a pale red glow suffasing the S. region of the
crater. Bright blue radiance (gas?) on ENE wall. Viol. radiance on
plateau m gone tonite. Red glow on 13th & the region was yellow-
brown." NASA catalog weight=4 (high). NASA catalog ID #1442.
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.
In 1941 Jul 11 at UT 04:00? Haas (New Mexico?, USA, 12" reflector)
observed near Hansteen "Moving luminous speck, estimated 0.1" diam.,
mag 8 (rept. date was 10. Lunar meteor?". The Cameron 1978 catalog ID=
487 and weight=3. The ALPO/BAA weight=2.
On 1986 Feb 26 at 05:00UT a photograph was obtained by T. Kohman of
Pittsburgh, PA, USA (3.5" Questar and 0.25 sec exposure) that had two
bands above the limb, resembling ejecta plumes. Cameron suspects that
these are probably flare from the eyepiece optics. Cameron 2006
extension catalog ID=282 and weight=0. ALPO/BAA weight=1.
Plato 1870 Apr 17 UT 22:00? Observed by Gledhill? (Halifax, England,
9" refractor) "Group 1 again in illum. as in Aug., Sep. 1869
observations." NASA catalog weight=2 (low). NASA catalog ID #166.
Gassendi 1967 Jan 28 UT 00:04-01:06 Observed by Moseley (Armagh,
Northern Ireland, 10" refractor, x350, Seeing=Good) "Small moon blink
(Eng.) not quite concentric with the crater, half way from c.p. to SE
(IAU?) wall. Lasted till 0007h then clouds. Seen again at 0100h-0106h,
then lost with poor seeing. Looked again at 0148, 0230, 0310, but neg.
Other areas also neg." NASA catalog weight=4 (high). NASA catalog ID #
1013.
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.
Cleomedes Alpha 1993 Sep 03 UT2200-22:20 G. North (UK, 18.25"
reflector, x86 & x144) observed it to be a strikingly brilliant
'splodge' seen in the mostly shadow filled interior of
Cleomedes, and around this splodge was a faint halo extending
symetrically in an eastwards direction. The splodge was the
mountain Cleomedes Alpha. Strangely no shadow from the mountain
was seen to be cast onto the halo on the east. Observer alerted
other observers by phone, and upon returning to the scope found
that the splodge had faded in brightness and continued to fade
over the next hour as one would expect from a mountain at
sunset. Some heavy spurious colour was present. J. Cook & M.
Cook (Frimley, UK) observed at 22:20-22:25 and found the bright
splodge, but no halo. M. Cook re-observed later and confirmed
normal fading of splodge. Roscoe observed from 00:30UT next day,
but by that time Cleomedes Alpha had set and was no longer
visible in the shadow filled floor. S. Beaumont had observed
earlier at 20:00 but had recorded all as normal in Cleomedes.
The Cameron 2006 catalog ID=466 and weight=5.
The ALPO/BAA weight=2.
On 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
Peirce A (Swift=IAU name?) 1937 Dec 23 UTC 22:00 Observed by Wilkins
(England, UK, 12.5" reflector) "Obscuration on floor if crater. Crater
invis. (similar to #394, 396)." NASA catalog weight=4 (high). NASA
catalog ID #412.
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.
Aristarchus 1976 Aug 13 UT 07:30 Observed by Bartlett (Baltimore, MD,
USA, 4.5" reflector 45-225x, S=6=3, T=5) "Nimbus around c.p.=2deg,
S.floor=6deg & was red; rest of floor=8deg. This is only tint in
Aris.). Tonite saw a pale red glow suffasing the S. region of the
crater. Bright blue radiance (gas?) on ENE wall. Viol. radiance on
plateau m gone tonite. Red glow on 13th & the region was yellow-
brown." NASA catalog weight=4 (high). NASA catalog ID #1442.
On 1985 Dec 29th at UT 23:23-23:58, M. Mobberley (Bury St. Edmunds,
Suffolk, UK, seeing II-III) made a video scan of the Moon. P.W. Foley
examined the tape and noted something that Mobberley had not seen
visually. Two scans of Totticelli B had taken place, one at 23:23 and
the other at 23:58UT. In the first a brilliant point appeared briefly,
on the western rim, positioned at 3o'clock. In the second video
sequence this brilliant spot was present continuously and wandered
along the rim. It was possible to monitor frequency of turbulence
present, this apparent movement did not ppear to conform, although
judgement here was extremelydifficult as the feature was at absolute
point of resolution, a little better than 0.5 mile. Also considered was
the implication of the equipment effect, this did not seem to fit
either as other nerby craters in the same configuration, 30% shadow
filled with sunlight on exterior of western walls. A point to watch for
in future. ALPO/BAA weight=3.
Janssen K 1992 Sep 14 UTC 21:30-0025 Observed by Brook (Plymouth, UK,
4" reflector, Antoniadi II seeing). "Crater > & similar one was sharp
EW wall especially bright. Floor in shadow. No obscuration on floor but
no detail in bright part could be seen. At 23:20 had dimmed slightly,
continued to do so. At 00:40 was noticeably < Began to see detail
00:25, TLP over. G. North (Herstmonceux, 18" reflector) took photos in
this time K was grayish, not very bright. C. Brook noticed K very
bright condition its rays 1/2 length. L. Harris (UK, 10" Reflector with
CCD camera). Cameron 2006 catalog ID=453 and weight=5.
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.
Messier & A 1972 Aug 27 UT 08:51-09:21 Observed by Hansen (LeMoore, CA,
USA, 6" reflector, x200) "Perculiar thread of shadow connecting the 2
craters. Sun's elev. @ 6deg. Drawing (possibly a high peak on E.wall of
A casting a shadow?)" NASA catalog weight=1 (very low). NASA catalog ID
#1342.
In 1897 Oct 14 at UT 00"50 Pickering (Cambridge, Mass. USA, 15"
refractor?) observed "Refractive displacement of lunar atm. at
bright limb was 0.4" (time is for occultation of Alctone in
Pleiades)" The Cameron 1978 catalog ID=294 and the weight=3. The
ALPO/BAA weight=1. Note this may? refer to an occultation, in
which case it will be pointless to observe again for a
particular illumination.
Grimaldi 1937 Sep 23 UT 05:00 Observed by Firsoff (Glastonbury,
England, 6" reflector + filter) "Variations in green. Strong green on
this date. Other dates of variation are:
Date Time Color
4/29/37 0930 slight
3/23/38 09?30 strong
7/24/38 0830 gray-green
NASA catalog weight=4 (high). NASA catalog ID #424.
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.
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. ALPO/BAA weight=4. NASA catalog ID #1007.
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.
C.Brook (Plymouth, UK) noticed that the east wall of this crater was
brighter than the walls of nearby craters. Cameron comments that Foley
says that this is normal and agrees. Cameron 2006 Catalog Extension ID=
433 and weight=1. ALPO/BAA weight=1.
Plinius 1937 Jul 27 UT 04:37 Observed by Haas (Alliance, OH,
12"? reflector) "E. end of c.p. varied in intensity at similar
lighting conditions. Intensity was low est on this nite, being
at I=5.0. Other nites were:
Date Time col. I
6/23/37 0600 84 8.5
7/20/37 0200 58 6.0
7/22/37 0300 78 6.5
9/22/37 0700 114 6.0
9/24/37 0830 142 6.5
10/17/37 0100 59 8.5
10/21/37 0500 109 8.5
NASA catalog weight=4 (good) on this and the nights listed. NASA
catalog ID #422. ALPO/BAA weight=3.
Something resembling a cigar shaped shiny object seen
on S rim - hanging over a smaller crater. It looked like a bright
aluminum can in the sun & cast a shadow onto the rim. The length
was 8-10 miles long x 1 mile wide at the central point.
It appeared tapered to points at both ends. Observer studied it
for several hours. S term. ~60-70miles away. Apparently not related
to topog. Alt. 8deg. Cameron 2006 Extension catalog weight=3.
ALPO/BAA catalog weight=1.
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.
Aristarchus 1969 Dec 28 UT 00:24 Observed by Kilburn (England, 6"
reflector x192) "Blink in same place as #1231. Very faint and large
area." NASA catalog weight=3 (average). NASA catalog ID #1232.
Observed by Bartlett (Baltimire, MD, USA, 5" reflector, x150) "N. half
of crater hazy & ill-defined". S=5, T=4. NASA catalog weight=4 (good).
NASA catalog ID 571.
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.
Plato 1975 Jun 28/29 UT 23:00-01:20. Foley (Wilmington, UK, 12"
reflector, seeing, III, good clarity transparency). At 23:00,
00:30, and 01:15 blue was seen on the inner wall:floor southern
boundary, and red on the corresponding northern floor:wall
boundary. However by 01:20, blue was now on the S-NW floor:wall
boundary, and red on the NE-SE 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.
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.
Aristarchus 2004 Dec 02 UT 01:55-02:45 Observed by Brook (Plymouth,
England, 60mm OG x120) "Fluctuation in the brightness and definition of
A of about 1/4 to 1/2 minute period. Rest of field unaffected. Checked
for cloud wih naked eye during fades - negative. Checked for misting
and tear salt on eyepiece by shifting A around the field - negative."
BAA Lunar Section report.
Aristarchus 2004 Dec 02 UT 03:00 Observed bt Michael Amato (West Haven,
CT, USA, 127mm Maksutov, x123) "The brightness variation (as seen by
Brook earlier) was very apparent. One thing never seen before by Amato
was a thin short bright ray that extended out in the opposite direction
as Aristarchus bright ray". The higher the Moon climbed in the sky the
more obvious this short thin bright ray became. An ALPO report.
Aristarchus 2004 Dec 03 UT 00:00-01:00 Observed by Brook (Plymouth,
England, 60mm OG x120) "Fluctuation in the brightness in Aristarchus
still present but less pronounced than yesterday. Also saw the bright
short ray on the opposite side to the main ray in Aristarchus that
Amato saw yesterday - but this may be normal?" BAA Lunar Section
report.
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.
S. Beaumont of Windemere, England noted that the crater appeared
to be divided into two. Cameron 2006 Extension catalog ID=381
and weight=3. ALPO/BAA weight=1.
P.Foley (Nettlestead, UK, 12" reflector) noticed a translucent bluish
glow in Earthshine coming from this crater, despite it being close to
the nright terminator. Cameron 2006 catalog extension ID=200 and
weight=2. ALPO/BAA weight=3.
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 1997 Jul 25/26 at UT 23:00-00:00 S. Fox (Dundee Tayside, Scotland,
UK, 15cm f/5 reflector with x4 Barlow). A series of photographs were
taken that show a glow just beyond the terminator, near to Callipus
crater. Almost certainly this is lens flare from the Barlow lens. The
ALPO/BAA weight=1.
M.C. Cook (Frimley, UK, seeing=III-II) noticed that the crater had a
blue/green colour and that this varied, filling a large circular patch,
brightly illuminating to the ESE-SSE (IAU?) spilling over the wall and
the rim. Shadows inside the crater were large and elongated. The filter
response was greater in the blue than through a yellow or red
Microfiche. Spurious colour was noticed elsewhere but not in
Aristarchus. Cameron 2006 extension catalog ID=313 and weight=3.
ALPO/BAA weight=3
Messier A 1976 Sep 15 UT 21:05 Observed by J.H-Robinson
(Teignmouth, UK, 26cm Newtonian, Wratten 25 and 44a filters,
x200, seeing very poor). Messier A was fainter than Messier in
blue light. ALPO/BAA weight=1.
Eratosthenes 1976 Aug 18 UT 06:12 Observed by Bartlett (Baltimore, MD,
USA, 4.5" refractor, 45, 225x, S=6, T=3-2) "Again, c.p. is vis. within
shadow but much brighter than on Aug, 4 (4 deg) & similar to June at
same col. The 2nd bright spot seen in June was not seen tonite.
(roughness on walls seen in LO IV & V pics show why these pseudo-
shadows appear)." NASA catalog weight=4 (high). NASA catalog ID #1445.
Eratosthenes 1976 Jun 20 UT 07:57 Observed by Bartlett
(Baltimore, MD, USA, 4.5" refractor, 40-450x, S=6.5, T=4-3)
"Floor covered with shadow & c.p. seen as 5deg bright spot.
Another minute spot 5deg bright on SE floor in shadow. (only low
hills on floor in SE. spot on terrace?" NASA catalog weight=4
(high). NASA catalog ID 1436.
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.
Vitello 1939 Aug 09 UT 08:00 Observed by Haas? (NM?, USA, 12?"
Reflector) "S.part of dark area was I=4.0 comp. with #452 & #453, when
cond. were similar on all 3 dates (phase similar too -- normal
tonite?)" NASA catalog weight=4 (high). NASA catalog ID #457.
2012 Sep 09 UT 23:11-23:37 A.Mineev (Russia) observed a bright
flash near to Encke. ALPO/BAA weight=1.
Herodotus 1976 Aug 21 UT 08:40 Observed by Bartlett (Baltimore, MD,
USA, 4.5" reflector, 45-300x, S=4-3, T=6) "Pseudo peak seen as 5deg
bright spot lying on diagonal dark band that crosses the floor from NE
to SW & becomes vis. only at low sun. Never saw the pseudo peak in
afternoon before -- usually vis. only nr. sunrise, (this would be
expected if it is a low hill as seen on Apollo oblique pics). Other
times c.p. seen were May 11 (6deg), Jun 10 (13 deg), Sep 6 (8 deg),
Sep 7 (21 deg) & Sep 19 (10 deg) solar altitudes. (21 deg seems too
high a slope for the hills)." NASA catalog weight=4 (high). NASA
catalog ID #1446. ALPO/BAA weight=3.