Plato 1937 Jul 22 UT 06:20 Observed by Haas (Alliance, Ohio,
USA, 12" reflector?) "Floor distinctly greenish, but was gray on
June 23, 1937 at 0430 & col.84 (normal?)" NASA catalog weight=4
(high). NASA catalog ID #421. ALPO/BAA weight=3.
On 1982 Jun 05 at 22:00? UT, Chapman (UK, using a 12" reflector), again
using a x2 yellow filter, noticed that the central craterlet
detectabilty changed such that sometimes it was visible and sometimes
not. Foley (Kent, UK)noticed that the central craterlet could only just
be seen between June 2 to June 5 and was much less discernable than
during the previous lunation. No CED brightness measurements made. The
floor of Plato was noted to be very dark though. Cameron 2006 catalog
ID=172 and weight=4. ALPO/BAA weight=2.
Aristarchus 1965 May 15 UTC 01:40-02:15 Observed by Weresuik, McClench,
Johnson (Pt. Tobacco, MD, USA, 16" reflector x240, S=F, T=G) and Delano
(Massachusetts, USA, 12" reflector). "Crater had color(red?) detected
by Trident MB & photos were obtained. There were pulsations. Delano saw
E. wall of crater unusually bright (confirm. if at same time)." NASA
catalog weight=5 (very good). NASA catalog ID #876.
Aristarchus. 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.
Madler 2005 Oct 17 UT 04:14-05:28 Observed by Robin Gray (Winnemucca,
NV, USA, 152mm refractor, x228, x343, S=5-8 and T=5-6) "Very bright
pinpoint spot seen towards end of observing period on east crater wall,
lasting 1 min in duration. Brighter than other spots, possibly 8.5-9 on
the Elger scale. The spot was not seen earlier during the long
observing session." An ALPO report. The ALPO/BAA weight=3.
Eratosthenes 1976 Sep 08 UTC 04:29 Observed by Bartlett (Baltimore, MD,
USA, 4.5" reflector 45-225x, S=5-4, T=5) "Psuedo-shadow X3 was present
but X disappeared from wall(same intensity?) which was rated 4 deg.
Disappearance of X so unexpected that he examined inner S wall very
carefully & was certain it was free from psuedo-shad. Had vanished
within 24h. Other pseudo-shadows showed no change. X reappeared next
nite. (X must have been 4deg; &this is much higher than any other
meas.). Variability of wall shadows may habe been what Pickering saw,
suggests Bartlett." Cameron 1978 TLP catalog weight=4 and catalog ID
1452. ALPO/BAA weight=2.
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.
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.
On 1969 Sep 25 at 19:00?UT Azeau (Paris, France, 12" reflector, x100,
Seeing = good, altitude=20 deg) observed during an eclipse brilliant
points for 30 minutes in Ross. Cameron says that the date given
originally (16th Sep) was wrong because the age was 5 days and not full
Moon. There was however a peumbral eclipse on Sep 25th at 20:10 (max).
The Cameron 1978 catalog ID=1201 and weight=1. The 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.
On 1978 Sep 16 at UT 18:28-18:57 G.Searle (Concord, Sydney, NSW,
Australia, 8" reflector, x100, x160, S=III) observed a bright star-like
point on the western (IAU) edge of Mare Tranquilitatis (x100) that
appeared unlike any other crater and a check of the location revealed
no suitably bright crater in that region (from a map?). Changed to a
higher power (x160) and it was still there, but not as conspicuous.
Observer thinks that this may have been due to the Moon's low altitiude
(16 deg) and the seeing. At 18:35 he compared it to the brilliant
crater Proclus and found the star-like point to be 75% of the
brightness of Proclus. Ken Wallace (Australia) had been taking photos
and observed the object at 17:37.5UT. The object gradually faded over
the next 15 minutes and by 18:52UT could only be seen in averted vision
at x100. By 18:57UT it was gone. The Cameron 2006 catalog ID=38 and
weight=5. 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.
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 1898 Jan 08 at UT 00:00-01:00 Chrevremont (France?) notcied that
during a lunar eclipse, the mid-eclipse shadow was so dark that details
of the surface disappeared, all except for the Tycho SSW ray . Cameron
comments that it is unsual for that ray to remain when usually the ones
towards Kepler and Aristarchus are the ones to stand out? The Cameron
1978 catalog ID=297 and the weight=0. The ALPO/BAA weight=1.
On 1978 Aug 18 at UT 22:00 Coates (England?, UK, 3" refractor,
seeing=II) found that the inner bands of Aristarchus were hard to see,
this was odd because the seeing conditions were good and he usually
sees them? However he did not believe that there was any obscuration
going on. The Cameron 2006 catalog ID=37 and weight=0. The ALPO/BAA
weight=1.
On 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.
In 1954 Jul 16 at UT 01:12 Chernov (Russia, 2" refractor, x33) observed
the following for Aristarchus: "Activity noted in it * in extension of
Moon's shadow on sky for 12 min during .17phase of ecl.(source gave
date as June 16, but ecl was July 16)". The Cameron 1978 catalog ID=566
and weight=1. The ALPO/BAA weight=1.
On 1978 Aug 19 at UT02:45-04:00 Porter (Naragansetts, RI, USA, using a
6" reflector, Seing = 6/10) noticed blue on the north east corner of
Aristarchus and an orange glow on the south east wall. They detected no
movement or change in brightness. The observer used both eyes, to make
sure it was not an eye defect, and three filters: red Wratten 25, blue
Wratten 82 and Violet Wratten 47. Porter found that the colours faded
for a duration of 5 minutes and then returned. Their right eye gave a
good view and using their left eye they suspected that it was 0.5 steps
brighter than the remainder of the crater. The suspected colour
remained visible, even under moments of good seeing conditions. The
colour eventually faded over time and was eventually gone. Porter
reportd seein gcolour here on the following night. Apparently other
bright spots showed no colour. Fitton suggests that the filters used
confirm that the south east wass was definitely red in colour. The
Cameron 2006 catalog ID=37 and the weight=0. ALPO/BAA weight=1.
Aristarchus 1973 Nov 10 UTC 20:00? Observed by Coates (England, 8"
reflector x200, Moon at gigh altitude above horizon). "Attracted to
crater because of an orange hue extending towards Herod. Has seen this
at other times. Thinks not a LTP, but actual color on ground."NASA
catalog weight=2 (low). NASA catalog ID #1381.
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.
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.
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.
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.
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.
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 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.
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.
Four bright spots seen in Mare Crisium. There was also peculiar
behaviour of the terminator. Source: Midlehurst 1968 catalog TLP ID=16.
Ref Web 1962 p62-76. The ALPO/BAA weight=1.
On 1980 Mar 04 at UT10:30-10:34 D. Darling (Sun Prairie, WI, USA,
12.5" reflector, x344) detected a pin-point light in the shadowed area
of Mare Crisium that varied in brightness then faded. Cameron 2006
catalog ID=84 and weight=0. ALPO/BAA weight=1.
Gassendi 1940 Sep 19 UTC 06:00 Observed by Haas (New Mexico,
12?" reflector) "Largest bright spot in SE part of floor, had I=
6.7, but 6 for last nite & 5.6 on others (see #'s 469, 472, &
474)." NASA catalog weight=4. NASA catalog ID #475. ALPO/BAA
weight=2.
Conspicuous bright spot seen on 6th. Also seen on 7th, absent on 8th.
Cloud-like effect where light had been (on 8th). Cameron 1978 catalog
TLP ID No.=139 and weight=3.
Daniell 1894 Feb 23 UT 00:00? Observed by Krieger (Germany)
"Strong, brownish-red coppery hue." NASA catalog weight=4 and
catalog ID #281. ALPO/BAA weight=3.
1894 Feb 23 UT 00:00(?) Posidonius N. Wall observed by
Krieger (Germany) "Strong, brownish-red coppery hue." NASA
catalog weight=4 and catalog ID #281. ALPO/BAA weight=3.
Furnerius A 1983 Jan 02 UT 00:10 H. Hill (UK)
observed that this crater was piercingly bright,
which he thought was a bit unusual. ALPO/BAA weight=1.
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.
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.
On 1904 Aug 01 at 05:00? Pickering (Echo Mt., CA, USA) UT Plato:
"Bright hazy obj., 2" diam. on floor, Obs before & after were normal".
The Cameron 1978 catalog ID=318 and the weight=4. The ALPO/BAA
weight=3.
Aristarchus 1957 Oct 13 UT 07:00?$ W.Haas, according to the 1978
NASA Catalog is supposed to have seen a bright spot of light --
"explosion" in this crater. Confirmation of activity
in Aristarchus - Three independent observations within 4 hours.
Cameron 1978 catalog weight=5 and TLP ID No.=676. Private
comunication with Haas shows that he recorded nothing unusual
on the 12th or 13th. Therefore an ALPO/BAA weight of 1 has
been given until this matter is cleared up.
Fracastorius 2022 Apr 21 UT 01:35-02:12 A. Amorim (Brazil -
90mm f/10 refractor, 25 & 10mm eyepieces ) observed visually a
little bright spot near the centre of the otherwise completely
shadow filled crater. The bright spot was surrounded by a coma
effect. Clouds intervened but by 02:12 the spot was no longer
visible, just a thin patch of light close to the crater's
centre. Observations started when the Moon's altitude was 15
deg and ended when it was 23 deg above the horizon. ALPO/BAA
weight=1.
Callipus 1952 Sep 09 UT 21:00-21:20 Observed by Moore (England)
"Hazy broad line of light seen fr. NW wall to SE wall over shad.
floor. Gone next nite at 0120. He gave low wt. to obs. (sunlight
between peaks?)." NASA catalog weight=1. NASA catalog ID #553.
ALPO/BAA weight=1.
Stochard of Dublin, Ireland, saw naked eye at 10:30UT on
1862 Nov 12 Aristarchus as extraordinarily bright as a bright
spot on the Moon. This was seen in daylight with the waning
crescent. Cameron 2006 extension catalog ID=6 and weight=3.
ALPO/BAA weight=2.
Kepler 1966 DEc 04 UTC 05:10 Observed by de Beraud (Flossmoore,
Ilinois, USA, 6" reflector, x360, S=G) "Saw a bright area thru. blue
filter but could not see it in red filter. Decided it was a bluish
phenomenon." NASA catalog weight=3 (average). NASA catalog ID #1001.
On 1983 Jan 05 at UT22:00 P. Madej (Huddersfield, UK) noticed some
colour on Aristarchus. The Cameron 2006 catalog ID=195 and the weight=
2. The ALPO/BAA weight=1.
Ptolemaeus 1825 UT 23:45 Observed by Schwabe (Germany?) "Bright spot"
NASA catalog weight=4. NASA catalog ID #108. ALPO/BAA weight=2.
On 1913 Mar 20 at UT 19:00? Franks saw the south horn of the Moon to be
prolonged along the Leibnitz Mountains as a feeble line of light well
into the dark side. The Cameron 1978 catalog ID=335 and the weight=1.
The ALPO/BAA weight=1.
Schroter observed Aristarchus to be extraordinarily bright on the dark
side of the Moon. Cameron 1978 catalog ID=30 and weight=4. ALPO/BAA
catalog weight=2.
On 2003 May 05 at UT 19:12:50 and 19:17:45 R. Lena (Italy) saw
faint flashes (possible optical illusions) at these times in
Mare Vaporum in Earthshine. The ALPO/BAA weight=1.
On 2003 May 05 at UT 19:50 P.G. Salimbeni (Italy) saw a faint
flash (possible optical illusion) near to Pallas in Earthshine.
The ALPO/BAA weight=1.
On 2012 May 25 UT 05:35 Brenner F crater was recorded in a larger
area image by M. Collins (Palmerstone North, New Zealand, ETX-90
with LPI imager (monochrome mode) - seeing not good). He took a
sequence of 108 images from 05:35-05:40UT, and in the 65th frame,
a light spot, approximately 4 pixels wide can be seen just
outside the western illuminated rim of Brenner F. It is not
visible in any other frames. The exposure time was 0.125 Sec.
Because the western edge of the spot is very sharp, and the rest
of the Moon is slightly blurred due to seeing, it is thought that
this was most likely a cosmic ray event in the CCD camera - the 4
pixel width was perhaps contributed to by the image compression.
It could also be some bright surface spot that was made invisible
most of the time by poor seeing, and then during a brief period
the atmosphere is sharp enough at that locality to make it
visible. ALPO/BAA weight=1.
Macrobius 1938 Jun 02 UTC 18:00? Observed by McLeod (England? 5" ?
reflector) "Changes in dark areas. (near Proclus where Green saw
phenomenom. see #443)" NASA catalog weight=2 (low). NASA catalog ID #
444.
On 1984 Nov 28 at UT 17:30-18:05 P. Madej (Huddersfield, UK) found that
the crater Hubble had a cream white oval patch for short while that was
2x brighter than it's surroundsings. The Cameron 2006 catalog ID=254
and weight=3. The ALPO/BAA weight=2.
Censorinus 1959 Sep 08 UT 22:45-23:50 Observed by Jean Nicolini
(Brazil) "Much brighter than Proclus" NASA catalog weight=2.
NASA catalog ID #721. ALPO/BAA weight=2.
Messier 1981 Feb 10 UT 19:20-20:10 TLP discoevered by Hedley
Robinson (Devon, England) "Messier was brighter than Aristarchus
in both red and blue filters and also appeared indistinct, later
becoming invisible - lost in a bright streak. In comparison
Aristarchus was clear. Another observer, Amery confirmed that
Aristarchus was sharp in appearance but Messier certainly was
not. Cook likewiese found Messier not to be as sharp as Messier
A dueto a big shadow in Messier A. Pedler found that the sun
facing wall of Messier was OK but that the shadow was changing
from black to grey periodically at intervals of 2-3 minutes to a
few seconds. By contrast he found that Messier A remained quite
well defined. He tried red and blue filters but found no blink
effect. At 20:23UT Pedler found that the shadow had stabilized
to a shade of "mid grey" although remaining ill-defined. North
also found that Messier A was distinct but Messier itself was
ill-defined. Moore found the same thing but thinks that this is
normal for Messier under this illumination to appear indistinct.
More also saw the grey interior shadow. Price saw similar
appearance to Moore and suspected that this was normal for this
stage in illumination. Ratcliffe suspected everything normal -
just commenting that Messier was smaller and no detail in
comparison to Messier A. Madej and Taylor provided a sketch that
showed again a grey interior and merging with the east
wall/mare. Foley found Messier's pale grey interior to be un-
focusable but in comparison Messier A was sharp. He says that he
would expect a grey interior and the east wall to merge with the
mare. However the complete loss of deatil and variability were
not normal. Cameron comments that the Kuiper atlas confirms the
fuzzy indistinct appearance of Messier and that a Lunar Orbiter
picture shows a grey shadow. The Cameron extended catalog
weight=5. The ALPO/BAA weight=2.
On 1992 Dec 30 at UT 17:36 A. Dollfus (Meudon, France, 1m aperture
telescope used) detected evidence for a dust cloud using CCD
polarimetry. The ALPO/BAA weight=5.
On 25 Jun 1993 at UT 23:30-23:52 Carlos Colesanti (Mairinque,
Brazil) obtained two CCD images of Julius Caesar crater and
noticed a brilliant fuzzy area on the rim of the crater. This
appeared in both images and resembled a fuzzy white blob. Note
that this is a REA-Brazil observation. ALPO/BAA weight=1.
Cameron (2006) ID=463.
On 1981 Feb 10 at UT21:46-21:49 P. Madej (Huddersfield, UK) found a 2nd
mag star-like point on the north east wall of Aristarchus crater. M.
Price (Camberley, UK) at 21:46 and 21:49. North (UK) detected flashes
from the central peak. Foley saw Aristarchus as a "translucent glow".
Moore, Pedler and Ratcliff could not find Aristarchus. Earlier though
Amery (Reading, UK) had found Aristarchus to be sharply defined.
Cameron 2006 catalog ID=122 and weight=5. ALPO/BAA weight=3.
SE of Ross D 1967 Oct 10 UT 02:25-03:10 Observers: Harris
(Tucson, AZ?) Corralitos Obs (Organ Pass, NM, USA, 24" reflector)
"Bright area moved 80km/hr towards SSE & expanded as contrast
reduced. Corralitos MB did not confirm" NASA catalog weight=3
(average). NASA catalog ID #1049. Reports in ALPO/BAA archive
mention observations from Edmund Arriola & Robert Moody, Jr.
02:40-03:10 (19" Whittier College, x170 & x400, T=4, S=2-3) &
Cross 02:25-02:38 (12" f/66 Cass, x400, T=6, S=1.5 to 1") - the
latter although seeing low visual activity, apparently according
to Harris, took some yellow light photos that showed high
activity? ALPO/BAA weight=2.
On 1984 Jun 05 at UT20:00 Marshall (Covington, UK) saw an unusual
darkening on the floor of Proclus and irregular shape. The Cameron 2006
catalog ID=243 and the weight=2. The ALPO/BAA weight=1.
In 1824 Jul 04 at UT23:00? Emmett (England, UK) observed a star-like
light on the rim (in the dark). The Cameron 1978 catalog ID=100 and the
weight=3. The ALPO/BAA weight=2.
Plato 1967 Apr 18 UT 03:10-04:00 Observed by Kelsey
(Riverside, CA, USA, 8" reflector x300, S=8, T-4-5). "Streak
on floor showed slight enhancement in red filter comp. to
blue. Later, a 2nd streak formed. Probably the sun shining
thru a valley in the rim. Red enhancement permanent? (Wise
suspected a blink here 6h earlier)." NASA catalog weight=3.
NASA catalog ID #1027. ALPO/BAA weight=1.
Alphonsus 1990 Feb 03 UT 18:00-18:23 Observed by A.C. Cook
(Frimley, UK, CCD video camera, seeing III-IV). At 18:06 W and
SE dark floor patches, equally dark, but at 18:10 and 18:23 the
W dark patch was the darker of the two?. Between 18:06 and 18:23
and a bright patch to the north of the central peak brightned
slightly wrt the its surroundings. However seeing conditions
worsened as the observing session progressed, and in view of
this the ALPO/BAA weight=1.
Plato 1916 Jul 8 UT 19:00? Observed by Markov (Russia) "Light on the
shadow of the bands at the bottom (similar to #362)" NASA catalog
weight=3 (average). NASA catalog ID #364. ALPO/BAA weight=2.
Plato 1907 Jan 22 UT 20:00 Observed by Fauth (Germany?) "Glow of light
in part of crater" NASA catalog weight=3 (average). NASA catalog
ID 327.
Alphonsus 1990 Feb 03 UTC 20:05-21:22 Observed by Brook (Plymouth, UK,
10" reflector) "Brightness variance noted". The Cameron 2006 catalog
does not have an entry for this observation. The ALPO/BAA weight=2.
Tycho 2003 May 09 UT 21:04 Observer Brendan Shaw (UK) "CCD
image of central peak - Sun's altitude suggested that this
should not have been directly illuminated this early - may
have been from secondary reflectance off illuminated W wall?"
ALPO/BAA weight=1.
Alphonsus 1966 Apr 28 UT 21:58 Observed by Smith (England, 10"
reflector) and Corralitos Observatory (Organ Pass, NM, USA, 24"
reflector+Moon Blink) "Reddish patches, (not confirmed at Corralitos
with MB tho they give feature as Gassendi in their report)." NASA
catalog weight=2. NASA catalog ID #930. ALPO/BAA weight=1.
At 03:00UT(?) Evrard et al from the western US(?) saw somewhere
a reddish glow, followed by black obscuration. The date in the
Middlehurst catalog is 18/1/65, but there may have been a descrepency
between local time date and UT date? Cameron 1978 catalog TLP No=916
and weight=3.
A dome-like feature, sketched by Herring and confirmed in a photograph
by Larson. This had not been seen before by Herring in hundreds of
hours of observing. No other reports of this. The photograph was taken
at 02:50h. Cameron 1978 catalog ID=878 and weight=5. ALPO/BAA weight=3.
On 1984 Dec 01 at UT 20:00 a British Astronomical Association Lunar
Section member (Southam, Warwickshire, UK) found no detail on the floor
of Autolycus, despite there being plenty of detail on the floor of
Aristillus crater. According to Foley, there should be some detail at
this stage of illumination. Grego reports that the observation was from
a Society for Popular Astronomy member and they described "a
homogeneous grey veil over the 20 km floor of the crater". The
Cameron 2006 catalog ID=255 and the weight=2. ALPO/BAA weight=2.
On 1988 Mar 26 at UT20:00 M.C. Cook (Frimley, UK, Frimley, UK, 12"
reflector, seeing=III) reported Cenosrinus to be "foggy/fuzzy" and this
this effect was not seen in other adjacent regions. The cameron 2006
catalog ID=320 and weight=4. The ALPO/BAA weight=2.
Archimedes 1973 Jan 13 UTC 19:06-19:40 Observed by Theiss (51N, 9.67E,
75mm refractor) "Yellow to green colours at wall of Archimedes, became
stronger until 19:09UT, constant brightness until 19:10UT and
dissappeared at 19:16UT" Ref: Hilbrecht & Kuveler (1984) Moon & Planets
30, pp53-61.
Proclus 1973 Jan 13 UTC 19:30-19:35 Observed by Krojer (48.25N, 11.5E,
60mm refractor) "North East wall of Proclus extraordinarilly bright,
observation interrupted by fog." Ref: Hilbrecht & Kuveler (1984) Moon &
Planets 30, pp53-61.
La Hire 1887 Feb 02 UTC 20:00? Observed by Klein (Cologne, Germany, 6"
refractor) "Intense yellow streak that cast shadows around neighboring
features". NASA catalog weight=4 (good). NASA catalog ID #255.
Censorinus 1973 Jan 13 UTC 20:02-20:14 Observed by Leitzinger (48.25N,
11.5E, 60mm refractor) "Censorinus Extraordinarily bright, pure white"
Ref: Hilbrecht & Kuveler (1984) Moon & Planets 30, pp53-61.
Alphonsus 1966 Apr 20 UT 22:28 Observed by Smith (Nottingham,
England, 10" reflector) Reddish patch possibly detected on SE
flank of central peaks, but more dubious than that from 28th
Apr. ALPO/BAA weight=1.
1864 May 15-16 UT 23:00-01:00? East of Picard (probably Curtis
Observed by Ingall (Camberwell, England?) "Remarkable bright
spot" NASA catalog weight=3 (average). NASA catalog ID #134.
ALPO/BAA weight=3.
Ross D 1966 Nov 23 UT 04:50-05:02 Observed by Cross (Whittier,
CA, USA, 19" reflector, x250 & 2390, S=4-5 (sometimes 6), T=4,
excellent contrast) Activity level 5, eastern third of Ross D's
circumference possibly partly obscured. ALPO/BAA weight=1.
On 1987 Oct 03 at UT 01:0?0-02:00 R. Manske (Brooklyn, WI, USA, 8"
reflector, x226) observed sunlight glinting of the walls in spectacular
display of colours. White (even gold) was seen at the centre, and blue
on the top most part of the rim. The white (or gold) band was thin in
comparison to other bands. The observer suspects that this effect was
terrestrial atmosphere related. Cameron 2006 catalog ID=307 and weight=
0. ALPO/BAA weight=1.
Gassendi 1966 Apr 30 UT 21:30-23:28 Observed by Sartory,
Ringsdore (England, 8.5" reflector, S=E), Moore, Moseley
(Armagh, Northern Ireland, 10" refractor, S=VG), Coralitos
Observatory (Organ Pass, NM, USA, 24" reflector, Moon Blink)
"English moon blink system detected red spots with vis.
confirm. Ringsdore says no color but saw obscuration. (LRL
60-in photos showed nothing unusual by my casual inspection).
Indep. confirm. (even E. wall was in dark). Corralitos did
not confirm by MB." N.B. event had finished by the time
Corralitos came on-line. NASA catalog weight=5. NASA catalog
ID #931. ALPO/BAA weight=4.
Ross D 1965 Dec 04 UT 04:25 Observed by Cross (Whittier, CA, USA,
19" reflector, x155, seeing 4+) "Obscuration of part of the rim,
also bright area 7-10km diam. Not seen on following nite." NASA
catalog weight=4 (good). NASA catalog ID #917. ALPO/BAA weight=3
Near Hyginus 1959 Sep 13 UT Observed by Bradford (S.Shields,
England, 15"? reflector), Feist, Lovas (Hungary), Moore, Wilkins
(Kent, England, 7" refractor, x500) "Obliterated by a hovering
cloud (Feist disagrees). Budapest obs. saw a cloud at 21:02:30,
lasting 5 m. Moore & Wilkins saw burst of light & dust cloud at
21:02:35 (confirm.) Drawing by Lovas." NASA catalog weight=5 and
catalog ID #722. The ALPO/BAA weight=1.
Littrow, 1959 Sep 13 UT Observed by Bradford (S.Shields,
England, 15"? reflector), Feist, Lovas (Hungary), Moore, Wilkins (Kent,
England, 7" refractor, x500) "Obliterated by a hovering cloud (Feist
disagrees). Budapest obs. saw a cloud at 21:02:30, lasting 5 m. Moore &
Wilkins saw burst of light & dust cloud at 21:02:35 (confirm.) Drawing
by Lovas." NASA catalog weight=1 and catalog ID #722. The ALPO/BAA
weight=1.
Moon 1967 Apr 21 UTC 02:30-09:30 Observed by Dunlap et al (Corralitos
Observatory, Organ PAss, NM, USA, 24" reflector + moonblink) "UV excess
relative to red & visual images. Greatest (30%) at subsolar pt. nr.
limb, grading down to 0% at term. Seen Apr 22 also with a gradient of
10% at term. to 25-30% at subsolar pt. (137 deg long). Filters well
balanced. Neg. (normal) on Apr. 20 & 23rd. Bandpass 3700-4900A on image
enhancement & filter equip. (coincided with Lyrid meteor shower. They
had seen this phenom. many times since. NASA catalog weight=5 (very
high). NASA catalog ID #1039.
On 1977 Apr 29 at UT21:40-23:20 an unknown UK observer reported a TLP
in Gassendi crater. The following are reports by observers attempting
to confirm activity: J.W. Napper (Didcot, UK, 30cm reflector, x287,
Wratten 25 and 44a, conditions clear 5+) received a telephone alert
call at 22:00 but the sky was cloudy until 22:30. An initial look
revealed nothing unusual, then at 22:54 he observed a colour blink just
inside the north wall, appearing bright in red and normal in blue or
white light. No loss of detail seen and the effect lasted only 2
minutes. A sketch was made. However the observer stresses that the very
bad seeing casts some doubt on this observation. L. Fitton observed
using a 8.5" reflector, with Moon blink device at x200, seeing was I-
II. All areas negative, including Gassindi from 21:40-21:55 and again
22;00-22:25 and finally 22:50-23:30 negative. Mike Brown (Huntington,
York, UK, 30cm reflector, x220 and x350, seeing 3-4/5, and transparency
5/5) - observed from 22:00-23:25UT no colour seen, nor obsecuration,
all filters negative, despite seeing a lot of fine setail inside this
crater.
On 1987 Oct 04 at UT 02:20 D. Darling (Sun Praire, WI, USA,
12.5" reflector, x170, S=8, VG, T=5) obtained the brightest
measurement he had ever recorded on the northern rim of
Proclus. Brightness 9 and adjacent plain was of brightness
6.5. The Cameron 2006 catalog ID=308 and the weight=3. The
ALPO/BAA weight=2.
On 2013 Apr 22 UT 01:39-02:37 P. Zeller (Indianapollis, USA,
10" f/4 reflector, x200, seeing 6, Transparency 3 - scattered
cirrus) observed visually (depicted in sketch) the two closely
spaced NW wall dark bands) to have a rusty-red hue. The colour
of these bands did not change over the period of the observing
session. Images were taken, but resolution and image S/N is
not sufficient to resolve separate bands here, or to detect
colour. The ALPO/BAA weight=1.
Gassendi 1966 May 01 UT 19:30-00:21 Observed by Sartory (UK,
8.5" reflector, x500, S=G), Moore, Moseley (Northern Ireland,
12.5" reflector x350, S=E) and by Corralitos Observatory
(Organ Pass, NM, USA, 24" reflector + moon blink) "Eng.
moonblink & obscuration, also vis. confirm (Moore & Moseley
alerted by Sartory. Corralitos MB did not confirm. - but they
may not have been observing at the ame time?)." NASA catalog
weight=5. NASA catalog ID #932. ALPO/BAA weight=4.
On 1981 Aug 11 at UT21:05-21:36 G. North (England, seeing=poor)
detected, in green light, a darkening on the floor of Plato. This
effect was not seen elsewhere. J-H Robinson (Teighmouth, Devon, UK)
detected on the SSE rim (inner and beyond) a triangle that appeared
hazy in a wide range of filters at 21:05UT. However at 21:36UT it was
only hazy in green and blue light. No similar effect was seen
elsewhere. The Cameron 2006 catalog ID=150 and weight=5. The ALPO/BAA
weight=3.
On 2017 Feb 08 UT 01:45 A.Martini Jr (10" Schmidt-Cassegrain
with ASI 120 MC camera +IR filter, Gain 40, Gamma 36,
exposure 0.003 sec) saw on a computer monitor screen a flash
to far to the west of Herodotus and Aristarchus at the
location 54.53W, 23.5N. It had a duration of 0.5 sec and on a
brightness scale of 0 = night side of the Moon to 10 =
Aristarchus, ranked 7. Unfortunately they were not recording
at the time. As there was no confirmation observation and it
could be a cosmic ray air shower detection, the ALPO/BAA
weight=1
Aristarchus 1966 May 01 UT 21:55-22:45 Observed by Paterson,
Brown, Sartory, Ringsdore (England, 12" reflector x252 for the
former and 8.5"? reflector for the latter) "Eng. moon blink
system detected red spots with vis. by all but Ringsdore. Brown
saw intense white spot NW of crater wall" NASA catalog weight=5.
NASA catalog ID 933. ALPO/BAA weight=4.
In 1934 Feb 25 at UT 18:30 Rawstron (USA?, 4" refractor, x250, S=6/12)
observed in Pico B: "A large patch of haze appeared & drifted off
across the mare in same direction as haze from Pico (white patch). It
was obs. on 20 other occasions. Drawing". The Cameron 1978 catalog ID=
410 and weight=3. The ALPO/BAA weight=2.
Gassendi. 2023 May 02 UT 01:35-02:23. J. Albert (Lake Worth,
FL, USA - ALPO. 8” SCT via a 9mm ortho eyepiece. Transparency
magnitude 3 and seeing was 7/10) checked the crater without
filters as well as comparing with W25 red and W44A blue
filters using 226x. He saw no color on the SW part of the
crater floor or on the NW wall. Using the filters, however,
he did note that the high peak on the S wall was brighter in
blue than red. He tried this filter blink a number of times
because he had never seen this before in Gassendi, but the
result was the same each time. A colour image was taken
earlier at 01:21UT but shows not colour on S wall as it was
saturated. ALPO/BAA weight=2.
Gassindi 1966 Oct 25 UTC 22:30-23:10 Observed by Moore and
Moseley (Armagh, Northern Ireland, 10" refractor) and Sartory
(England, 8.5" ? reflector) "2 faint blinks (Eng.) on NW (IAU
?) wall. (Indep. confirm.?). NASA catalog weight=5. NASA
catalog ID #987. ALPO/BAA weight=4.
Aristarchus 1880 Jan 23 UT 20:00? Observed by Trouvelot
(Meudon, France) "Luminous light like a luminous cable or
shining wall". NASA catalog weight=3. NASA catalog ID #217.
ALPO/BAA weight=2.
Plato 1873 Nov 01 UTC 20:00? Observed by Pratt (England?) "Unusual
Appearance". NASA catalog weight=1 (very low). NASA catalog ID #182.
ALPO/BAA weight=1.
On 1976 Nov 03 at UT20:00-21:40 P.W. Foley (Kent, UK) reported a TLP in
Gassendi - some obsevers detected colour, others did not. P. Moore did
not notice anything unsual earlier at 18:50-19:00, though his seeing
was IV-V. Nor did he see anything unsual from 21:53-00:20, but seeing
was still IV-V. D. Jewitt, observing 20:34-21:25 and 22:55-23:20 also
reported nothing unusual. Amery (Reading, UK, 25cm reflector, x300) did
however notice a small reddish spot to west of central ridge, but by
20:30UT the colour was less obvious, but the spot was back again at
20:45, but not easily seen at 21:00 and gone completely by 21:45UT.
N.Bryant (Ilfracombe, UK, 25.4cm reflector, x260), observed 3 red
patches on the floor between 20:54 and 21:31UT. A BAA Lunar Section
report. ALPO/BAA weight=3.
On 1964 Jun 21 at UT 21:18 Lipskii and Pospergelis (Shternberg State
Ast. Institute, AZI-2" reflector (Cass.) observed Aristarchus:
"Polarization meas. with electron polarimeter. Plane of polariz.
rotated 2deg fr. the adjacent areas. They interpret it as some
scattering medium over the crater. (Source gave date as 6/31/64,
misprint =21st?)". The Cameron 1978 catalog ID=820 and weight=5. The
ALPO/BAA weight=4.