On 1866 Jun 16 at UT21:30? Temple (Marseilles, France) observed
Aristarchus crater to have a reddish-yelloow colour in the Earthlit
part of the Moon. The Cameron 1978 catalog ID=144 and the weight=4. The
ALPO/BAA weight=3.
On 1867 May 07 at UT 20:00-22:00 Tempel (Germany?) and Flammarion
(France?) observed Aristarchus to be a reddish-yellow beacon-like
light. Left (E. ?) side of crater very bright luminous point. The
Cameron 1878 catalog ID=152 and weight=5. The ALPO/BAA weight=4.
On 1982 May 26 at UT 20:25-20:40 Kalauch (Berlin?, Germany, 9"
refractor, x60, T=1(best) and scintilation=2) found Aristarhus to be
"very visible" in Earthshine - which was very clear. At 20:25 UT
Aristarchus was seen to blink irregularly and then it attained
magnitude 7 (red). Telescopes and eyepieces were changed but did not
effect the appearance. It disappered at 20:40UT. Cameron 2006 catalog
ID=168 and weight=2. ALPO/BAA weight=2.
Lyell 1972 Nov 10 UTC 23:43 Observed by Bartlett (Baltimore, MD, USA,
3" refractor x54, x100, x200S=3, T=5) "At apparent center of floor &
edge of morning shadow an elongated, N-S irreg. obj. dull whitish-gray,
albedo=4 like a c.p. (photo in Kwasan atlas in 1963 taken at col. 339.3
deg has a faint suggestion of a bright spot in that place- (plate 20)
LO IV66 h2 & 73 H2, sun elev. @ 20deg show an even, dark floor with a
very small crater right in center -- unresolvable at earth. Kwasan
photo's spot could be an artifact" NASA catalog weight=3 (average).
NASA catalog ID #1349.
On 1986 Mar 15 UT 19:51-19:55 A. Cook (Frimley, UK, Naked Eye
and 12" reflector, x60, seeing IV, transparancy poor)
observed a naked eye flash at 19:50.5 UT in the Mare Nubium
area. The flash was white in colour and lasted not longer
than 0.5 sec and was about magnitude 2 at most in brightness.
There was no rise or fade associated with this flash. Upon
checking the area with the telescope, the observer reproted
seeing a faint fuzzy small patch that came and went over
several seconds in the same general area - but this may have
been due to the seeing conditions and/or glare from the
bright side of the Moon. The patch area was about the same
size as Aristarchus, i.e. approx 40 km across. Note however
that observing conditons were too poor that night to see
Aristarchus. At later observing sessions from 20:30UT
onwards, the patch was not seen. The ALPO/BAA weight=3.
On 1983 Mar 19 at UT04:56-05:54 Louderback (South Bend, WA, USA,
3.1" refractor, seeing=1-2 and transparency=4) observed that at 05:15UT
Eimmart appeared fainter than the observing session began at 04:56 UT.
There was also a bright flash on the north wall that "fluctuated at
rate of 9s" Cameron comments that atmospheric blow ups were 11-12s.
Louderback found that the TLP was seen in the blue filter but not in
the red. The Cameron 2006 catalog ID=207 and the weight=4. The ALPO/BAA
weight=3.
A faint white pinpoint flash seen and also in the same position
a whitish glow around the crater. No futher flashes seen after the
first one. From UT2117-2130 the glow was still visible but faded
making it more difficult to locate. When Foley observed he found
Aristarchus not very visible in Earthshine, despite Plato, Grimaldi,
and several other features being visible. Both observers used
12" reflectors. Cameron's 2006 catalog Extension ID=124 and
weight=0. ALPO/BAA weight=3.
On 1789 Sep 26 at UT 03:30 Schroter (Lillienthal, Germany) observed
close beneath Mons Blanc at the west foot, in the dark, a small 5th
magnitude, speck of light. Its round shadow was sometimes black,
sometimes grey. Cameron suspects that this is the same as her TLP
report No. 50. the Cameron 1978 catalog ID=62 and weight=4. The
ALPO/BAA weight=3.
On 1789 Sep 26 at UT04:25? Schroter (Lillienthal, Germany)
noted a bright point 26" north of Aristarchus crater. Note
that the year might have been 1788? The Cameron 1978 catalog
ID=50 and the weight=3. The ALPO/BAA weight=3.
On 1789 Sep 29 at UT04:25? Schroter (Lillienthal, Germany) noted
1'18.5" south east of plato was a whitish bright spot shining somewhat
hazily, 4-5"in diameter and at 5th magnitude. He never saw this again.
The spot became conspicuous at times and then disappeared. There was
nothing else similar in Earthshine. Note that the year might have been
1788? The Cameron 1978 catalog ID=50 and the weight=3. The ALPO/BAA
weight=3.
Schroter, from Lillenthal in Gemany, in 1789 (possibly it was
1788) Sep 26 UT 04:30 saw a small nebulous bright spot on the
northern edge of Mare Crisium. Cameron 1978 catalog ID=50 and
weight=3. ALPO/BAA weight=1.
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.
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.
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.
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.
2004 Nov 20 UT 01:43:36 R. Spellman (120mm F8.3 refractor at
prime focus, PC23C CCTV camera, via a DVD recorder) recorded
a flash of light. The ALPO/BAA weight=1.
2004 Nov 20 UT 02:34:03 R. Spellman (120mm F8.3 refractor at prime
focus, PC23C CCTV camera, via a DVD recorder) recorded a flash of
light. The ALPO/BAA weight=2.
2004 Nov 20 UT 03:12:29 R. Spellman (120mm F8.3 refractor at
prime focus, PC23C CCTV camera, via a DVD recorder) recorded
a flash of light. The ALPO/BAA weight=1.
Archimedes 1966 Mar 29 UT 21:00 Observed by Hill (England, 24"
reflector, x250, S=E) "Brightening of E-W bands across floor.
(Obscuration accord. to Moore)" NASA catalog ID #923. NASA
catalog weight=3. ALPO/BAA weight=1.
On 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.
1996 Apr 27 UTC 02:26-03:14 Observed by Spellman (Los Angeles, CA, USA)
" 02:26 U.T. Sunrise on Tycho 3/4 of the crater was in shadow,
topmost section of the central peak was in sunlight. In white light
brightness of the central peak rivaled the brightness of the Eastern
(sunlit) wall. No change was detected in red light, however in blue
light definite strong darkening was observed. Blink obtained when
viewing thru 25A and 38 filters. At 2:52 U.T. in the poor to fair
seeing the apparent size of the central peak in white and red light was
the same, in blue light the central peak in white and red light was the
same, in blue light the central peak size shrank to 1/2 white and red
size (and brightness). Also appearing sharper. Comparison was made also
with the central peak of Alphonsus, no changes were observed. The
significant part of the observation was the relative brightness of the
central peak to the sunlit rim in white and red light, they appeared
almost identical with the crater rim, being just slightly brighter. In
blue light the brightness of the central peak was reduced by at least
half while the rim brightness was not, (relative to one another). I
strongly believe that this was a real event. The shadow filled
portion of Tycho was examined for any abnormalities but none
were observed. Observations were ended shortly after 3:14 U.T. due to
clouds. I also conducted about 20 Moon blink observations during this
observing run and got the same strong reaction each time." ALPO/BAA
weight=3.
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.
Proclus 1976 Jul 06 UT 01:35 Observed by Bartlett (Baltimore, MD, USA,
3" refractor, 40-450x, S=6, T=3) "Nothing vis. on floor (albedo=2 deg?)
(usually features are vis.)" NASA catalog weight=4 (high).NASA catalog
ID #1437.
In 1952 Nov 26 at UT 01:00? Carle (USa, 8" reflector, x700,
seeing = excellent) observed the following in Plato: "Sketch
shows 8 spots -- 5 craters showed interior shad., 1
completely filled, but no others seen despite several hrs. of
study. Spots that should have been seen were missing. poor
seeing converts floor into shimmering shapeless blob. Has
observed it under good seeing & seen nothing on fl. as others
have noted". The Cameron 1978 catalog ID=555 and weight=3. The
ALPO/BAA weight=2.
On 1955 Aug 27 at UT 01:51 McCorkle (Memphis, Tennessee, USA, 6.5"
reflector, x200) observed a 2nd magnitude bright flare on the dark side
of the Moon. This remained steady, fading slightly before abruptly
disappearing. Cameron suggests that this might have been a meteor. The
Cameron 1978 catalog ID=604 and weight=0. The ALPO/BAA weight=1.
Although the crater was on the night side, a small bright spot
was seen. This was blue, almost UV, and equivalent to a star of
magnitude 2. It flashed over intervals of about 30 seconds
and changed in colour from UV to blue. The BAA Lunar Section
TLP network was alerted. Mobberly and J.Cook did not see much
although J. Cook may have seen something, but located else where?
Cameron lists this as a confirmed? observation? The Cameron
2006 TLP xtension catalog has this TLP with an ID No. of 258
and a weight of 4. The ALPO/BAA weight is 2.
Censorinus-Maskelyne 1927 Apr 11/12 UT 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. NASA catalog ID #393. ALPO/BAA
weight=3.
Cichus 1975 Sep 15 UT 11:15-11:30 G.Ryder (Corinda, Australia,
25cm reflector, x250 & x380, seeing good but with some cloud)
The interior W. wall of this crater (on the lip) appeared
hazy - difficulkt to bring detail into focus. Neighbouring
craters/detail were sharp. Details in the crater wall interior
were starting to become visible as time went on, but it had
clouded over by 11:30. A Moon Blink was used but no colour was
detected. ALPO/BAA weight=1.
On 1985 mar 01 at 20:00UT? Moseley noticed a violet band (tapering to
an apex close to the crater centre and merged with the eastern
exterior) around Toricelli B, however M. Cook (Frimley, UK) had seen a
dusky band(England, UK) on an earlier photo. There was no terminator
shadow in the crater. Cameron 2006 Catalog Extension TLP ID=260 aqnd
weight=3. ALPO/BAA weight=3.
2004 Jan 02 UT 09:05 (approx) M. Collins (Palmeston North, New
Zealand, ETX 90, seeing 3, clear) saw a possible(?) flash north
of Carlini D at about 16W, 35N in adverted vision. It lasted
only a split second. The ALPO/BAA weight=1.
A region of the Mare Imbrium was extremely bright, giving
a reading of 8 out of 10 on the Elger scale. Cameron notes
that from photos of the Full Moon, the area appears to
normally be the brightness of Archimedes floor i.e. 3.5 out
of 10 on the Elger scale. Atmospheric seeing was excellent
and the observer could see a lot of fine detail with their
2.4" and 3" refractors. Cameron 2006 catalog extension ID=62
and weight=3.
The UT given in the Cameron 2006 extension catalog are: 20:58, 23:25-
02:20 and 01:40-04:00, however it is not clear what UT applies to which
of the observers or the two features reported as having TLP on that
night. On 1984 Feb 12-13 Marshall (South Anerica, seeing=III-II)
noticed that Moltke was very bright with a fuzzy violet hue - he had
never seen it like this before. Cameron 2006 catalog extension TLP ID=
240 and weight=2. ALPO/BAA weight=3.
The UT given in the Cameron 2006 extension catalog are: 20:58, 23:25-
02:20 and 01:40-04:00, however it is not clerr what UT applies to which
of the observers or the two features reported as having TLP on that
night. On 1984 Feb 12-13 Marshall (South Anerica, seeing=III-II) saw
initially no craterlets in Plato, despite the Moon being at a high
altitude. At 01:45UT the northwest corner of Plato was red. Again no
other craterlets showed. He found the surrounding wall to be too bright
and this was confirmed by Crater Extenction Device readings and had
problems focussing on the crater. By 02:00-02:50UT he noticed
variability in the visibility of the craterlets. By 03:48UT the central
craterlet was much brighter than before and the crater doublet had
brightened but the southern craterlet was still invisible. Cameron
comments that Marshall was a very experienced observer. A. Cook (of
Frimley, UK) obtained a photodiode line scan image of Plato. The
brightness of the north west wall was brighter than the bright area on
the west wall. Marshall and Mosely both saw a dark area on the floor of
Plato close to the south wall (from clock position of 11 o'clock. There
was a prominent white spot on the floor and the central craterlet was
seen, but only under good conditions. Mosely does not discuss the west
and north west wall brughtnesses that were seen earlier by Cook and
Marshall. Cameron 2006 catalog extension TLP ID=240 and weight=2.
ALPO/BAA weight=3.
M.C. Cook (Frimley, UK) got an abnormally low brightness reading for
Proclus, despite nearby Censorinus being normal. Crater Extinction
Device used. The Cameron 2006 Extension catalog ID was 163 and the
weight was 3. The ALPO/BAA weight was 2 too.
In 1820 Oct 17 at UT 20:00 an unkown observer reported in Mare Imbrium,
south of Sinus Iridum (30W, 40N) some brilliant spots. The Cameron 1978
catalog ID=80 and weight=1. The ALPO/BAA weight=1.
Plato 1966 Dec 23 UT 06:15-07:10 Observed by Kelsey (Riverside, CA,
USA, 6" reflector, S=P, T=G) and Coralitos Observatory (Organ Pass, NM,
USA, 24" reflector +Moonblink) "3 brilliant spots on floor, all showed
blinks, (permanent colored Ground features ?). Not confirmed by
Corralitos MB." NASA catalog weight=2 (low). NASA catalog ID #1005.
Gassendi 1977 May 28/29 UT 20:45-21:15 Observed by D. Sims
(Dawlish, Devon, UK) saw a hazy area on the south east floor
that was normal in red and white light but darker in blue.
This was partly confirmed by J-H Robinson (Devon, England, 10"
reflector) 21:24-23:12 who saw the south east floor of
Gassendi to have a loss of detail - but no colour seen,
although at 21:57-21:58 it was slightly brighter in red than
in blue briefly. P. Doherty (22:45-23:15) did not see anything
ususual. D. Jewitt (22:22-22:55) did not reveal anything
ususual, apart from spurious colour. The Cameron 1978 catalog
ID=3 and ID=1463. The ALPO/BAA weight=3.
On 1990 Sep 30 at D. Darling (Sun Praire, WI, USA, 12.5"
reflector, x150) observed a red spot on the west wall (bright
in red filter and faint in the blue filter. No filter
reactions were found elsewhere. Gassendi had much detail
visible. A sketch was made. BAA observers in the UK were
alerted but they could not observe due to cloud. Cameron
2006 extension catalog ID=411 and weight=5. ALPO/BAA weight=3.
Aristarchus, Schroter's Valley, Herodotus 1881 Aug 06 UT 00:00?
Observed by Klein (Cologne, Germany, 6" refractor, 5" reflector)
"Whole region between these features appeared in strong violet
light as if covered by a fog spreading further on 7th. Examined
others around & none showed effect. Intensity not altered if
Aris. placed out of view." NASA catalog weight=4 (high). NASA
catalog ID #224. ALPO/BAA weight=3.
Plato 1982 Jun 02 UT 22:00. Mobberley could not see the
central craterlet on the floor of Plato tonight. Foley notes
that he could only just see the central craterlet on nights of
2-5th Jun and it was of reduced in brightness from normal.
North reported that the floor seemed nearly black, but
brighter in a green filter (x144 magnification used). All
three observers compared the Plato area to other areas for
reference. All the above seems normal, apart from the floor
being brighter in the green filter. Cameron 2006 extension
catalog ID 170 and weight=5. BAA/ALPO weight=1.
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.
A blue tinge was seen inside and outside the crater
perimeter. The surrounding halo lost brightness that
was observed on 1993 Jan 29. Observed on Apr 19, 20 and 28th.
Cameron 2006 extension catalog ID=213 and weight=5.
ALPO/BAA weight=3.
On 1933 Oct 01 at UT 03:00 Rawstron (USA, 4" refractor, x330) observed
the following in Mons Pico B: "Haze -- much narrower & elongated than
on Sep. 1". The Cameron 1978 catalog ID=407 and weight=3. The ALPO/BAA
weight=2.
Observed by Haas (Las Cruces, NM, USA) "Temporary greyness seen in
interior shadow." ALPO/BAA weight=3.
On 1955 Oct 28 at UT00:00? Kozyrev (Crimea, Soviet Union, 50"
reflector) detected in Aristarchus Fraunhofer lines in UV spectra that
were much narrower than in the solar spectrum. This indicated
luminescent glow which overlapped contour(?) lines. Greatest after Full
Moon, but fluctuated monthly with no indication of solar activity
effect. The Cameron 1978 catalog ID=621 and the weight=5. The ALPO/BAA
weight=5.
On 1955 Oct 28 at UT 00:06 W. Taylor saw a naked eye flash on the Moon
in the north east area, on the edge of Mare Vaporum. The flash was
intense and radiated to a large area. The duration was 1/4 seconds.
Aristarchus, Schroter's Valley, Herodotus 1881 Aug 07 UT 00:00?
Observed by Klein (Cologne, Germany, 6" refractor, 5" reflector) "Whole
region between these features appeared in strong violet light as if
covered by a fog spreading further on 7th. Examined others around &
none showed effect. Intensity not altered if Aris. placed out of
view." NASA catalog weight=4 (high). NASA catalog ID #224.
Aristarchus 1981 Mar 17 UT 22:40-23:25 Observed by Moore
(Selsey, England, 15" reflector, seeing III) "Aristarchus very
bright according to Crater Extinction Device and a coloured
blink detected" BAA Lunar Section TLP report. ALPO/BAA
weight=1.
On 1965 May 12 at UT 22:20 H. Miles (UK) found a possible
obscuration in Bailly crater. Most of the region was as sharp as
normal, but the central area was greyish and blurred. Although
the observer concerned considered themselves a non-experienced
observer, another BAA Lunar Section observer saw the same
effect. ALPO/BAA weight=2.
Aristarchus Area 2004 Nov 22 UT 04:58-05:49 Observed by Gray
(Winemucca, NV, USA, 152mm f/9 refractor, seeing 4-5, trasparency 4-5,
x114, x228) "Blinked Herodotus with Wratten filters Blue 38A and Red
25. The illuminated west crater wall stood out brilliantly in blue
light, much more so than in white light. This was true also of
Aristarchus. Red light did not increase contrasts in Herodotus any more
than they were in white light. Shadows in Herodotus appeared as black
as the night west of the terminator and remained that way throughout
the observing period. No TLP seen in Herodotus tonight. A possible TLP
was seen to the west of Herodotus near the terminus of Schroters
Valley. It was noted at the beginning of the observing period that
there were four very bright spots of light, one near the end of
Schroters Valley, the other three grouped together a little farther
north. Although not far from the terminator they were definitely east
of it. It was noted that all of them nearly vanished in the Blue 38A
filter while Aristarchus and the rim of Herodotus gleamed brilliantly.
At 5:19UT it was noted that the most brilliant of the four lights, the
one near the terminus of Schroters Valley, had faded almost to
invisibility in white light. When first seen it had been brighter than
Aristarchus. It remained very dim after this through the remainder of
the observing period, and was unchanged at 7:35-7:49UT when I again
examined the area. The other three bright spots remained brilliant and
unchanged."
Aristarchus 1973 Aug 10 UTC 20:14 observed by Baumeister
(48.63N, 9.25E, 110mm reflector, T=2, S=2) "Orange to red
colours at the crater floor disappeared until 21:04" -
Hilbrecht and Kuveler, Earth, Moon & Planets, 30 (1984),
p53-61. ALPO/BAA weight=2.
Plato 1973 Aug 10 UT 22:45 observed by Robinson (Devon, UK).
Observer noticed that the lighter areas on the floor were more
distinct in red than in the blue filter. ALPO/BAA weight=1.
All observers saw a blue tinge seen inside and outside the
crater. Marshall observed a bright spot in the middle of
the crater floor and thought perhaps that it was a central
peak. No central peak can be found on Lunar Orbiter images.
Cameron 2006 Catalog extension ID=214 and weight=5. ALPO/BAA
weight=4.
Proclus 1976 Sep 06 UT 02:00 Observed by Bartlett (Baltimore, MD, USA,
4.5" reflector 45-300x, S=3, T=5) "Nothing vis. on floor of 2deg
brightness. Usually floor ray & Proc. A are vis. at this col. & c.p. is
5 deg bright. (must have been 2 deg tonite)." NASA catalog weight=4.
NASA catalog ID #1450.
Proclus 1972 Dec 17 UTC 18:30 Observed by Farrant (Cambridge, England,
8.5" reflector) "Crater appeared very bright (Apollo 17 Watch)." NASA
catalog weight=2 (low). NASA catalog ID #1359.
Gassendi 1939 Aug 27 UT 02:00 Observed by Haas? (NM? USA, 12"
reflector?) "NE part of c.p. was I=6.4, compared with I=9.4 on 9/28/39
(see #462) under similar cond.@ NASA catalog weight=4 (high). NASA
catalog ID# 458.
Cobra Head, Aristarchus 1964 Feb 25 UT 02:37-02:38, 02:39-02:42
Observed by Budine (Binghamton, New York, USA, 4" refractor, x250, S=6,
T=4) "Red flashes" NASA catalog weight=3 (average). NASA catalog ID #
802.
Blanco, J. Vidal, of Gijon, Spain (3" refractor x72)
noticed an unfamiliar very bright center near to Encke.
Cameron suspects that this was Encke B crater
on the basis that it is a prominent small crater
near to Encke. Cameron 2006 catalog extension ID=410
and weight=2. ALPO/BAA weight=1.
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.
Amery (Reading, England) saw blue in Aristarchus but a photograph did
not show the colour. Foley thinks this was spurious colour. Cameron
2006 extension catalog ID=27. ALPO/BAA weight=1.
Promotorium Laplace: 1978 Apr 20 UT19:30-22:35 Peter Foley
observed a tiny yellow-brown region close the tip of the cape,
north east of the precipitous west edge, in the face of the
north facing slope. The area concerned was diffuse and varied
in density despite the surroundings not varying. Foley notcied
no colour elsewhere on the Moon, though Amery thought that he
saw some in Aristarchus, but Foley thinks this was spurious.
Cameron 2006 catalog extension ID=27 and weight=5.
ALPO/BAA weight=3.
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.
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.
On 1821 Jan 16 at UT 21:00 S. Cooke (Stonehouse, UK) An
effusion of smoke effect, which lasted about a minute, seen.
It appeared like the fluttering of a bird and passed over the
Moon before it evaporated, and must have been foreshortened,
as it seemed in effect to have passed over the whole disc,
starting from west of Menelaus, and near Plinius. ALPO/BAA
weight=1.
Aristarchus-Cobra Head, 1967 Nov 15 UT 05:40-06:00 Observed by Cross,
Tombaugh (Las Cruces, NM, 12" reflector x800) and Harris (Tucson, AZ),
and Dunlap (Organ Pass, NM, 24" reflector with Moonblink). "Obs.
reddish color N. & E. of Aris. & more intense color nr. E.(IAU?) rim of
Cobra Head. Red color nr.C.H. confirmed by Tombaugh. Obtained 10 photos
between 0543-0549h in 3 spectral bands (blue, yellow, red, & integ.
light). No change dur. obs. per. but spot got smaller at moments of
good seeing. Isodensitometry of photos. At Corralitos 0152-0155 on 24-
in image intensifier & filter sys. photoos at 0320-0330h. Harris at
Tucson got spectra. Neither of latter 2 show anything unusual. Its
edges were nebulous even at best seeing. Size @ that of Cobra's Head."
NASA catalog weight=5 (very good). NASA catalog ID #1053.
Peter Foley (Kent, UK, 8" reflector, seeing=II) noticed that
the floor beneath the north wall, and the area over the north
wall were indistinct (almost out of focus). Despite looking
elsewhere in the crater and surrounds, no other blurring
(obscuration of detail) could be seen, indeed everywhere else
was sharp and detailed. Foley tried several eyepieces but this
made no difference. He used a crater extinction device but
found no variations in brightness. There was a slight
darkening when he used a red filter in the Moon Blink device.
The obscuration effect weakened between UT20:56 and 21:10,
was difficult to see at 21:13 and had finished by 00:15.
Patrick Moore (12" reflector, Dublin, Ireland) saw nothing
unusual when he started observing at UT 22:00. Cameron says
"Photos marked at location of phenomenon". Cameron 2006
extension catalog ID=37 and weight=5. ALPO/BAA weight=3.
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.
Aristarchus normal in red and blue filters however the
Cobra Head part of Schroter's Valley was brighter in blue.
Indeed it was very dull in red - Louderback says that this
was not surprising as the whole areas around Aristarchus is
brighter in blue. Louderback is an experienced observer
of the Aristarchus area of more than 10 years. Cameron 2006
extended catalogID=63 and weight=1. ALPO/BAA weight=1.
Louderback observed that the south west wall was a creamy deep yellow.
There was also strong fluorescent blue on the west wall of the Cobra
Head - Schroter's Valley area and this was similar to the violet glare
seen on Aristarchus at times. Violet was seen between Aristarchus and
the Cobra Head. Seeing coditions were poor. Brightening of a point
near C occurred roughly every 10-15 seconds and lasted 0.5 sec -
(Cameron concludes that this was not due to the Earth's atmosphere).
A 0.2 step drop in brightness was seen on point A (twin spots).
Point C had reduced by 0.6 steps. Elsewhere was stable in brightness.
Cameron 2006 catalog ID=281 and weight=4. ALPO/BAA weight=3.
Manilius 1939 Jun 30 UT 06:05 Observed by Haas (NM?, USA, 12"?
reflector) "Dark area in S. part was I=2.0 but was I=3.7 on 7/30/39.
Obs. conditions were very similar." NASA catalog weight=4 (high). NASA
catalog ID #449.
Plato 1873 Apr 10 UTC 21:00? Observed by Schmidt (Athens, Greece, 6"
refractor) "Under high sun, 2 faint clouds in E. part of crater."
Madler 1940 Aug 17 UT 06:45 (Cameron gives 07:30 but Haas says
this is wrong) Observed by Haas (New Mexico?, USA, 12"
reflector?) Bright spot on S. rim had I=5.8 on this date but
8.9 on Aug. 17, when observing conditions were similar (see #
473). NASA catalog weight=4. NASA catalog ID #470.
ALPO/BAA weight=3.
The area west of Helicon not visible despite the area being
fairly bright at Full Moon time. This area was a very bright
patch one night. Cameron notes: comensurability of Full Moon &
Perigee. Cameron 2006 catalog extension ID=64 and weight=3.
Seeing=7 and transparency=4. 2.4" refractor used. ALPO/BAA
weight=1.
Aristarchus 1989 Oct 13 UTC 21:00 Observed by Cook (Frimley, Surrey,
UK, 20cm reflector (visual and video)) "Aristarchus had what appeared
to be a outline of a ghost crater on it's eastern side - quite large
and bright". Cameron 2006 extended catalog TLP ID No=378 and weight=5.
ALPO/BAA weight=4.
Plato 1937 Jul 22 UT 06:20 Observed by Haas (Alliance, Ohio,
USA, 12" reflector?) "Floor distinctly greenish, but was gray on
June 23, 1937 at 0430 & col.84 (normal?)" NASA catalog weight=4
(high). NASA catalog ID #421. ALPO/BAA weight=3.
On 1982 Jun 05 at 22:00? UT, Chapman (UK, using a 12" reflector), again
using a x2 yellow filter, noticed that the central craterlet
detectabilty changed such that sometimes it was visible and sometimes
not. Foley (Kent, UK)noticed that the central craterlet could only just
be seen between June 2 to June 5 and was much less discernable than
during the previous lunation. No CED brightness measurements made. The
floor of Plato was noted to be very dark though. Cameron 2006 catalog
ID=172 and weight=4. ALPO/BAA weight=2.
Plato 1916 Oct 10 UT 21:00? Observed by M, Maggeni (Florence
Obs., Italy) "Reddish shadow spread over part of crater. Looked like
vapor (like nitrous vapor) and obscured underlying craters. The Cameron
1978 catalog weight=3 and ID = 365. The ALPO/BAA weight=3.
Aristarchus. 2024 Feb 23 UT 19:22. A.Conway (Bootle, UK - 20cm
Newtonian (dobsonian), 9mm Plossl eyepiece, Samsung A33 mobile
phone camera, 36 sec AVI file at 30fps, seeing probably
average-good). Noticed a blue tinge on northern rim of the
crater. This is probably normal, but we are flagging this up
as a weight 1 TLP, in order to obtain some repeat illumination
observations and confirm that the strength of the blueness is
normal.
Aristarchus 1965 May 15 UTC 01:40-02:15 Observed by Weresuik, McClench,
Johnson (Pt. Tobacco, MD, USA, 16" reflector x240, S=F, T=G) and Delano
(Massachusetts, USA, 12" reflector). "Crater had color(red?) detected
by Trident MB & photos were obtained. There were pulsations. Delano saw
E. wall of crater unusually bright (confirm. if at same time)." NASA
catalog weight=5 (very good). NASA catalog ID #876.
Eratosthenes 1976 Sep 08 UTC 04:29 Observed by Bartlett (Baltimore, MD,
USA, 4.5" reflector 45-225x, S=5-4, T=5) "Psuedo-shadow X3 was present
but X disappeared from wall(same intensity?) which was rated 4 deg.
Disappearance of X so unexpected that he examined inner S wall very
carefully & was certain it was free from psuedo-shad. Had vanished
within 24h. Other pseudo-shadows showed no change. X reappeared next
nite. (X must have been 4deg; &this is much higher than any other
meas.). Variability of wall shadows may habe been what Pickering saw,
suggests Bartlett." Cameron 1978 TLP catalog weight=4 and catalog ID
1452. ALPO/BAA weight=2.
Madler 1940 Sep 16 UT 02:10 Observed by Haas (New Mexico? USA,
12" reflector?) "Bright spot on S. rim was I=5.8 comp. with 8.9
on Aug 17 (see #470)." NASA catalog weight=4. NASA catalog ID #
473. ALPO/BAA weight=2.
Aristarchus 1973 Feb 15 UTC 17:07-19:31 Observed by Theiss (located at
51N 5.67E) "area 4-5 diameters of Aristarchus were coloured clearly
yellow-red" 120mm reflector used. Ref Hilbrecht & Kuveler (1984) Moon
and Planets Vol 30 p53-61. ALPO/BAA weight=1.
Plato 1973 Aug 13 UT 22:25-22:35 observed by Pedler (Devon, UK).
Observer noticed a slight blink on a lighter patch on the floor
just beneath the south(?) rim using Moon blink filters.
ALPO/BAA weight=1.
Kepler 1962 Jul 17 UTC 06:24,08:36 Observed by Wildey, Pohn (Mt Wilson,
CA, USA, 60" reflector+photometer) "Crater was at Vmag 2.68 at earlier
obs. which was .47 mag brighter than av. mag. at 15d & it faded to near
normal at later time to V=3.10(photom. measures), a change of 1/2 mag.
or @1.5 times in brightness" NASA catalog weight=5 (very good). NASA
catalog ID #761.
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.
Kepler 1962 Jul 17 UTC 06:24,08:36 Observed by Wildey, Pohn (Mt Wilson,
CA, USA, 60" reflector+photometer) "Crater was at Vmag 2.68 at earlier
obs. which was .47 mag brighter than av. mag. at 15d & it faded to near
normal at later time to V=3.10(photom. measures), a change of 1/2 mag.
or @1.5 times in brightness" NASA catalog weight=5 (very good). NASA
catalog ID #761.
On 1978 Aug 18 at UT 22:00 Coates (England?, UK, 3" refractor,
seeing=II) found that the inner bands of Aristarchus were hard to see,
this was odd because the seeing conditions were good and he usually
sees them? However he did not believe that there was any obscuration
going on. The Cameron 2006 catalog ID=37 and weight=0. The ALPO/BAA
weight=1.
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 1893 Apr 01 at UT 22:00 deMoraes of the Azores, Portugal, saw a
shaft of light projecting from the Moon. Cameron 1978 catalog ID=280
and weight=0. ALPO/BAA weight=1.
Manillus 1955 Aug 03 UTC 21:00 Observed by Firsoff (Sommerset, England,
6.5" reflector, x200) "Maniluus very bright in all colors, especially
blue, extraordinarily so" NASA catalog weight=4 (good). NASA catalog ID
#602.
Timocharis 1955 Aug 03 UTC 21:00 Observed by Firsoff (Sommerset,
England, 6.5" reflector, x200) "Crater was bright in blue, seemed large
& diffused." NASA catalog weight=4 (good). NASA catalog ID #602.
On 1978 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 1955 Nov 01 UTC 02:50-03:05 Observed by Bartlett (Baltimore,
MD, USA, 3.5" reflector x100, S=6, T=5) "Proc. D normally 5 deg bright
was vis. tonite only in blue light, whereas usually is vis. in
integrated light. However at col. 110.5 deg it was a dark spot (see #
816) C.p. tonite was normal 5 deg bright but in Oct. lun. was dark".
NASA catalog weight=4 (good). NASA catalog ID #625. Note Proclus D does
not refer to the crater Proclus D as defined by the IAU, but probably
to a spot inside the crater that Bartlett designated D!
Littrow 1915 Jan 31 UTC 22:00? Observer: unknown (England?) "6 to 7
spots arranged like a gamma first seen on this nite. (Kuiper atlas.
Rect. 14-c shows spots in form of a 7 or a cap. gamma backwards, but
not l.c. gamma)". NASA catalog weight=0 (almost certainly not a TLP).
NASA catalog ID #349. ALPO/BAA weight=1.
Mare Crisium 1962 Jul 18 UTC 09:54 Observed by Wildey & Pohn (Mt
Wilson, CA, USA, 60" reflector + Photometer) "Photometric meas. showed
change in brightness of the area of over a mag. during the nite.
Recorded at Vmag=3.56 first, & a few min(?) later at 4.62. It was .95
mag. brighter (@2.5x) than av. for that age & then returned to
normal." NASA catalog weight=5 (very high). NASA catalog ID #762.
On 1992 Jul 16 at UT 03:32-09:31 D. Louderback (South Bend, WA, USA,
3" refractor, x134) detected yellow on the southern rim of Aristarchus,
and the colour looked "darker" through a yellow filter and the region
was "duller" than normal. The region was 1 intesnsity step brighter on
the 2nd measurement, "on all points in it". The comet tail-like ray had
3 sections and was "mottled" in appearance. Finally the Cobra Head
region had possible variations in brightness. The cameron 2006 catalog
ID=451 and the weight=3. The ALPO/BAA weight=2.
Gassendi 1940 Sep 18 UTC 03:15 Observed by Haas (New Mexico? 12"
? reflector) "Largest bright spot in SE part of floor had I=6.1,
but I=6.7 & 8.6 on other nites. (same ph. see #469, 472 & 475)"
NASA catalog weight=4. NASA catalog ID #474. ALPO/BAA weight=2.
East of Picard 1864 Oct 16/17 UT 23:00-01:00? Observed by
Ingall (Camberwell ?, UK) "Remarkable bright spot" NASA
catalog weight=3. NASA catalog ID #135. ALPO/BAA weight=3.
Plato 1870 Feb 18 UTC 00:00? Observed by Gledhill (Halifax, England,
9" refractor) "Illum. of another group of craters different from group
in Aug. & Sep. obs. (date is F18 if phase is similar to Ap 1870)
NASA catalog weight=2 (low). NASA catalog ID #164.
Mare Crisium 1962 Jul 19 UTC 07:30 Observed by Wildey & Pohn (Mt
Wilson, CA, USA, 60" reflector + Photometer) "Photometric meas. showed
change in brightness from Vmag=3.46 to V=3.07, where av. mag. for that
age=3.26, or a brightening of .58 mag." NASA catalog weight=5 (very
high). NASA catalog ID #763.
Plato 1938 Jun 15 UTC 08:00 Observed by Haas? (New Mexico?, 12?"
reflector) "NW. end of floor had intensity I=2.0, but on 7/15/38, I=
3.7, conditions similar." NASA catalog weight=4 (high). NASA catalog ID
#439.
Plato 1971 Dec 04 UT21:00-21:10 D.B.Taylor (Dundee, UK, 10"
refractor, conditions poor and turbulent). Observer suspected
colour orange colour near bright spot on north wall. Observation
ceased due to being clouded out. ALPO/BAA weight=1.
On 1965 May 18 at UT 03:00-03:30 Cragg (Mt Wilson?, CA, USA, 6"
refractor?) observed a TLP (no feature nor description given in
the Cameron 1978 catalog) on the Moon. The Cameron 1978 catalog ID=877
and weight=4. The ALPO/BAA weight=1.
Mare Crisium 1962 Jul 19 UTC 09:48 Observed by Wildey & Pohn (Mt
Wilson, CA, USA, 60" reflector + Photometer) "Photometric meas. showed
change in brightness from Vmag=3.46 to V=3.07, where av. mag. for that
age=3.26, or a brightening of .58 mag." NASA catalog weight=5 (very
high). NASA catalog ID #763.
On 1990 Jan 13 at UT 22:15-23:05 J. Pedler (Bristol, UK, seeing=III and
transparency=excellent, no spurious colour) detected a blue region on
the north of Aristarchus, varying in sharpness/diffuseness. The crater
rim in this region could not be descerned. Eleswhere the crater rim was
normal as too were other features. When a Moon blink device was used,
no colour blink was detected, however through the blue filter the
suspected area was bright and the crater rim indistinct. Whereas
through the red filter the area looked perfectly normal. At 22:30UT the
effect had vanished and everywhere was normal. The Cameron 2006 catalog
ID=388 and the weight=5. The ALPO/BAA weight=3.
Four bright spots seen in Mare Crisium. There was also peculiar
behaviour of the terminator. Source: Midlehurst 1968 catalog TLP ID=16.
Ref Web 1962 p62-76. The ALPO/BAA weight=1.
Proclus 1956 Jul 25 UTC 06:16-06:33 Observed by Bartlett
(Baltimore, MD, USA, 5" reflector, x180, S=3-5, T=4) "C.p.
distinctly vis. within floor shadeo, est. 5 deg bright but no
trace of it at col. 122.37deg in Oct, '55(Oct. 4?)." NASA
catalog weight=4 (good). NASA catalog ID #645. ALPO/BAA
weight=2.
On 1990 Jan 14 at UT 01:14-01:55 M.C. Cook (Frimley, UK, seeing=poor)
observed that Aristarchus did not appear normal for this illumination.
the northern half of Aristarchus was "2x>" than the southern half of
the crater. There were two white patches of apron material near to the
crater Herodotus that were 50% of the brightness of the southern half
of Aristarchus. Furthermore the southern half of Aristarchus had a
circle - "dull patch on inner S wall with a bright point shining
through it. (Bartlett's EWBS?)". The Cameron 2006 catalog ID=389 and
the weight=4. The ALPO/BAA weight=2.
On 1944 Mar 12 at UT 23:00 H.P. Wilkins (Kent, UK, 8.5" reflector)
observed that Plato appeared incomplete - the central crater had it's
north wall obscured. cameron comments that maybe this was due to the
low altitude of the Moon? The Cameron 1978 catalog ID=491 and
the weight=4. The ALPO/BAA weight=2.
Darling, alerted by Keyes saw Aris >> brighter obj on moon (as
it normally is) Comet ray & N rim of Herod. >> could see no
detail - Aris. except two bands, moon was pale yellow (low alt.)
with halo around it. Nothing unusual elsewhere. Cameron 2006
catalog extension ID #384 and weight=0. ALPO/BAA weight=1,
just in case there is some merit in this report?
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.
Alphonsus 1972 Jul 30 UT 00:30-03:30 Observed by Morgan (UK
using a reflector) "Orange glow, brighter this nite than last
nite. Following nites were cloudy. Aristarchus and Gassendi
were negative." NASA catalog weight=3. NASA catalog ID #1338.
ALPO/BAA weight=3.
On 1979 Aug 12 at UT07:00-10:35 D. Darling and wife (Sun Prarie, WI,
USA, 12.5" reflector, x342, photos, S=9/10) observed a cigar shaped
protruberance in Romer crater that cast a 32km long shadow, nestled in
a valley rille next to Romer. This was a confirmed observation. The
effect persisted intil sunset. The top of the object and two points on
the crater rim were reflecting the Sun's rays. "Top of obj. & 2 pts on
crater rim reflected suns rays. It was as high as the crater rim
whereas the rill wall was not. Took photos. he has studied this area
and never saw such a phenom before. Photos did not show it". The
Cameron 1978 catalog ID=65 and weight=5. The ALPO/BAA weight=2.
Theophilus 1971 Dec 06 UT 21:35-23:20 Observed by Findlay, Ford,
Taylor, Robbie (Dundee, Scotland, 10" reflector x180), Bolger
(Chester, England), Fitton (Lancashire, England, 8" reflector).
"Red-orange patch on E. (IAU?) floor even without a blink.
Others confirmed. Dimmed by 2105h but still seen. Dimmer yet at
2230h & gone at 2300h. Baum saw brownish-red patch at 25.5E,
12.5S. Taylor saw reddish patch SE of crater, fainter at 2220h,
gone at 2300h. Fitton saw image very dull,yellow & steady.
Filters showed nothing unusual, & nothing seen at 2320h." NASA
catalog weight=5. NASA catalog ID #1320. ALPO/BAA weight=3.
Aristillus 1939 Sep 03 UT 05:00 Observed by Haas? (New
Mexico?) "Dark area in W. part of floor was I=4.0, comp. with
I=1.3, & I=3.7 (see #450, & #454). Used different telescope,
but can't explain diff. in albedo, since phase is similar in 2
& dist. from term. similar in all (normal?)." NASA catalog
weight=4. NASA catalog ID #459. ALPO/BAA weight=3.
Observed by Dachille & daughter (Univ. Park, Pennsylvania, 10.5"
reflector, x75) "Flash -- then a brownish - red color patch. Alt. @
20deg. (MBMW has Oct. 12, but is 13th UT)". NASA catalog weight=5
(very good). NASA catalog ID #674.
Eratosthenes 1976 Sep 14 UTC 04:24 Observed by Bartlett (Baltimore, MD,
USA, 4.5" reflector, 45-300x, S=6, T=3 hazy) "Pseudo shadow F
disappeared & wall here is same intensity as whole inner crater wall, =
4deg. No change in X, X3 or X2 (4 deg much brighter than normal)." NASA
catalog weight=4 (good). Cameron c1978 atalog ID=1453 and weight=4. The
ALPO/BAA weight=2.
Observations made with a variable polarizer (akin to a crater
extinction device) to measure brighness with red and blue filters.
Some variability in brightness noted. With the Kodak Wratten
25 and 38A filters there was little or no increase in contrast with the
red filter, but with the blue filter there was a great increase in
contrast of the brighter areas of the crater - the crater floor and
patches of lighter material, especially at the north end. The remaining
areas were supressed with the Blue 38A. ALPO/BAA weight=3.
Gassendi 1966 Dec 04 UTC 01:05-01:23 Observed by Whippey (Northolt?
England, 6" reflector, x212) "Abrupt flash of red, setling in
immediately to a pt. of red haze nr. NW (ast.?) wall. Continuous till
0123 (date given was 4-12-66 = European convention?)." NASA catalog
weight=3 (average). NASA catalog ID #1000.
On 1966 Apr 12 at UT 01:05-01:23 Whippey (Northolt, England, UK, 6"
reflector x212) and Corralitos Observatory (Organ Pass, NM, USA, 24"
Moon Blink) observed in Gassendi: "Abrupt flash of red, settling
immediately to a point of red haze near NW (IAU?) wall. Continuous till
0123h. (Not confirmed at Corralitos Obs. MB--at same time?". The
Cameron 1978 catalog ID=927 and weight=3. The ALPO/BAA weight=2.
Alphonsus 1956 Oct 26 UT 12:54 Observed by Alter (Mt Wilson, CA,
USA, 60" reflector, S=E) "Photog. thru UV & IR filters. Obscur.
of E. 1/2 of floor evident in blue plates -- KodakII-O plate no
filter. 2m later Kodak I-N. One pair of plates best he'd ever
seen. Similar obscuration seen 2X on Linne (this started Kozyrev
on his spectrographic program.)." NASA catalog weight=5 (very
high). NASA catalog ID #653.
On 1980 Jul 05 at 03:20UT P.Moore (Selsey, UK, 12?" reflector)
found Aristarchus to be "Very brilliant indeed". Cameron 2006
TLP catalog ID=100 and weight=3. ALPO/BAA weight=2.
Copernicus 1939 Sep 06 UTC 06:00 Observed by Haas? (New Mexico?, 12"
reflector) "Dark area at foot of N. inner wall had I=4.8 comp. with I=
1.8 in #451. (same phase so a real difference)." NASA catalog weight=4
(good). NASA catalog ID #460.
On 1983 Dec 28 at UT03:30-05:00 Moseley (Covington, England, UK,
seeing=V-IV and transparency=good) detected some detail within the
shadow under good moments of seeing. The external brightness was
extended to the east wall at a clock position of 9 O'clock, but did not
go outside the rim. It was less bright at the 11 O'clock position. The
Cameron 2006 catalog ID=236 and the weight=3. The ALPO/BAA weight=2.
On 1975 Sep 29 at 21:15-21:55UT P.W. Foley (Kent, UK, using a 12"
reflector, x200, seeing III), saw colour on Plato - blue on the inner
south west rim and red on the inner south east rim. No colour was seen
elsewhere on the Moon. This was a BAA Lunar Section Observation.
ALPO/BAA weight=2.
On 1969 Feb 12 at UT 12:00 Taboada (Mexico, seeing=excellent) found
that the Aristarchus region had the same characteristics as the
previous days, perhaps a little darker colour brown, but more
remarkable. He used red, blue and green filters and a difference in
colour was noticed in and out of the region. Cameron suspects that
permanent colour was being seen? The cameron 1978 catalog ID=1116 and
weight=3. The ALPO/BAA weigh=2.
On 1956 Jul 30 at UT 19:13 Dzapiashvili (Pulkova, Russia) observed the
following in Posidonius: "Short term sharp changes in polarization in
crater (in ashen light)". The Cameron 1978 catalog ID=643 and weight=5.
The ALPO/BAA weight=5.
On 1882 Nov 07 at UT 05:00 Hopkins (UK) observed the dark
eastern limb and a line of light and attributed this to a lunar
atmosphere. Further details can be found in: Reference: Sirius
16, 279, 1883. Cameron 1978 catalog ID=229 and weight=3.
ALPO/BAA weight=2.
On 1884 Sep 16 at UT 09:30-10:00 Heywood (Westville, Ohio, 2"
refractor) saw an unusually bright glow covering dark part, nearly
uniform. Thought it was electric because it was too bright for
Earthshine. It obscured features. The Cameron 1978 catalog ID= and
weight=1. The ALPO/BAA weight=1