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.
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 1973 Dec 8 UT18:15-18:20 R.Billington (UK, 2" refractor)
reported that ristarchus was orange. However 15 minutes earlier,
another observer, Livesey made a sketch and did not report any
colour. ALPO/BAA weight=1.
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.
Schroter's Valley 1955 Jul 03 UT 22:00 Observed by Firsoff
(Somerset, England, 6.5" reflector x200) "Drawing contains a
star-like pt. at N. part of valley." NASA catalog weight=4.
NASA catalog ID #597. ALPO/BAA weight=1.
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.
Gassendi 1973 Dec 08 UT 20:20-20:22 observed by J-H Robinson
(Devon, UK, seeing dair to poor). Suspected blink detected -
might have been due to atmospheric condtions?. ALPO/BAA weight=1.
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.
Mare Humboldtianum 1951 Jan 21 20:47-22:00 UT observed by Baum
(Chester, England). The appearance of some mountains on the
limb appeared to change over time, with some mistiness. ALPO/BAA
weight=2.
Madler 1940 Aug 17 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.
Moretus? 1871 Dec 25 UTC 22:00? Observed by Webb? (England?, 9"
reflector?) "Internal twilight in crater #132- a large circular crater
nr. S.pole (crater #132 on Goodacre's map is Plato. Webb's map?)" NASA
catalog weight=3 (average). NASA catalog ID #173.
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 1919 Nov 27 at UT 23:00-01:00 Fock (Germany) observed in the
vicinity of Tycho, during an eclipse (mid eclipse at 23:56UT) a long
ray in the direction of Longomontanus that remained visible. It was
glowing in weak gray-green colour for the whole of the eclipse. The
Cameron 1978 catalog ID=373 and weight=2. The ALPO/BAA weight=1.
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.
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.
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.
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.
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.
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.
Proclus 1955 Nov 01 UTC 02:50-03:05 Observed by Bartlett (Baltimore,
MD, USA, 3.5" reflector x100, S=6, T=5) "Proc. D normally 5 deg bright
was vis. tonite only in blue light, whereas usually is vis. in
integrated light. However at col. 110.5 deg it was a dark spot (see #
816) C.p. tonite was normal 5 deg bright but in Oct. lun. was dark".
NASA catalog weight=4 (good). NASA catalog ID #625. Note Proclus D does
not refer to the crater Proclus D as defined by the IAU, but probably
to a spot inside the crater that Bartlett designated D!
Aristarchus 1970 Feb 22 UTC 07:00? Observed by Thomas, Stump, Corral.
Obs. (Organ Pass, NM, 24" reflector+Moonblink) "Bluing around crater --
vis. in monitor, but not photographable due to clouds." NASA catalog
weight=4 (good). NASA catalog ID #1235.
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.
Herodotus 1972 Jul 27 UT 2250-2350 M.Brown (Hutington, UK)
thought that he saw a pseudo peak in the centre of Herodotus.
He could not decide if it was real or an optical illusion.
ALPO/BAA weight=1.
Plato 1870 Feb 18 UTC 00:00? Observed by Gledhill (Halifax, England,
9" refractor) "Illum. of another group of craters different from group
in Aug. & Sep. obs. (date is F18 if phase is similar to Ap 1870)
NASA catalog weight=2 (low). NASA catalog ID #164.
Aristarchus 1970 Feb 23 UTC 07:00? Observed by Thomas & Stump
(Corralitos Observatory, Organ PAss, NM, USA, 24" refletor+Moon Blink)
"Bluring around crater -- vis. in monitor, but not photographed due to
clouds." NASA catalog weight=4 (good). NASA catalog ID #1235.
On 1990 Aug 08 at OT 07:47-09:00 UT D. Louderback (South Bend, WA, USA,
3" refractor, x173) "(SS) Piton's all pts were << but nearby plain was
normal. Ridges at 5.3 at B, C, D but 3 alb at B, C, D (norm = 7) but
bearby plain was normal. At A 3, was hazy but ill defined. Parts of mt
brightened but others didn't. Times between brightening were 6-8s.
Similar to seeing fluctuations. In red mt stayed dull & steady. In blue
it blinked." - this is a direct quote from the Cameron 2006 catalog
because it is very difficult to summarize. Louderback comments that the
TLP was still going on at 09:00UT. The Cameron 2006 catalog ID=406 and
the weight=4. The ALPO/BAA weight=3.
On 1990 Aug 08 at UT 07:47-09:00 D. Darling (Sun Praire, WI, USA, 3"
refractor, x173) reported the following TLP in Promontorium Agarum
(Cape Agarum): "W flank of CA >>, even> Proc. interior." The cameron
2006 catalog ID=406 and the weight=4. The ALPO/BAA weight=3.
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.
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.
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.
Aristarchus 1970 Feb 24 UTC 07:00? Observed by Thomas & Stump
(Corralitos Observatory, Organ PAss, NM, USA, 24" refletor+Moon Blink)
"Bluring around crater -- vis. in monitor, but not photographed due to
clouds." NASA catalog weight=4 (good). NASA catalog ID #1235.
Alphonsus 1972 Jul 29 UT 00:30-03:30 Observed by Morgan (England, UK)
"Orange spot just W. of c.p. on central ridge; circular area @ 15-25km
diam, larger than c.p. Was bright orange then turned orange-brown
toward center. Central 4,5km was darker than rest; bownish-black with
blue-white specks flashing in center. Obscur. there but ridge clear
elsewhere. The dark spot SW of c.p. could not be seentho outside of
color area. Sketch. It had appearance of dome of atm. thicker at
center. Never seen before in 11y. Next nite brighter. NASA catalog
weight=3. NASA catalog ID #1337. ALPO/BAA weight=1.
On 2002 May 30 at UT02:30-02:44 C. Brook (Plymouth, UK) suspected that
Aristarchus crater looked dimmer than normal. The 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.
On 1982 Dec 18 at UT 15:00? Arsyukhin (Moscow, Russia, 3" reflector)
found that the northern cusp was protruded onto the dark side as a
blue thread. The Earthshine was brown in colour. The Cameron 2006
catalog ID=191 and weight=2. The ALPO/BAA weight=2.
On 1982 Dec 18 at UT 15:00? Arsyukhin (Moscow, Russia, 3" reflector)
found that the southern cusp was protruded onto the dark side as as a
blue thread. The Earthshine was brown in colour. The Cameron 2006
catalog ID=191 and weight=2. The ALPO/BAA weight=2.
Mare Crisium. 2025 Mar 02 UT 18:36. T.Smith (Codnor, UK - 16
inch Newtonian) To the NW interior floor and to NW of Swift
was a bright and very noticeable streak orientated in a NE to
SW direction, about 70 km in length and 9-10 km wide. He had
never noticed this streak before and it was unsually bright
and "solid" looking. It is appearently shown on the 21st
Centuary Atlas of the Moon, Map 26 or Rukl and Maps 2A and 2B
of the Cambridge Photographic Moon Atlas but nothing like as
bright as it was tonight. It might have been a ray from
Proclus but was less bright the following night. ALPO/BAA
weight=1.
Mare Crisium. 2025 Mar 02 UT 18:36. T.Smith (Codnor, UK - 16
inch Newtonian) To the NW interior floor and to NW of Swift
was a bright and very noticeable streak orientated in a NE to
SW direction, about 70 km in length and 9-10 km wide. He had
never noticed this streak before and it was unsually bright
and "solid" looking. It is appearently shown on the 21st
Centuary Atlas of the Moon, Map 26 or Rukl and Maps 2A and 2B
of the Cambridge Photographic Moon Atlas but nothing like as
bright as it was tonight. It might have been a ray from
Proclus but was less bright the following night. ALPO/BAA
weight=1.
On 1788 Dec 02 at UT 04:35 Schroter (Lillienthal, Germany) noted that
Aristarchus was extraordinarily bright, like a star. The Cameron 1978
catalog ID=51 and the weight=4. The ALPO/BAA weight=3.
On 1983 Jun 14 at UT22:10-23:15 R. Mosely (Coventry, UK, 3"
refractor, x38, seeing IV-V) observed a limb brightening near
Olbers, though the cdrater itself was not visible in Earthshine.
By 22:30 the glow seemed to spread a little vurther to the
north. The ALPO/BAA weight=1.
On 1983 Jun 14 at UT22:10-23:15 R. Mosely (Coventry, UK, 3"
refractor, x38, seeing IV-V) observed a limb brightening from
the vicinity of Pythagoras to the north pole cusp. The ALPO/BAA weight=1.
On 1991 Jan 29 at UT17:56-18:01 A.C. Cook (Frimley, UK, 20cm reflector
+ image intensified CCD camera, transparency moderate to very poor)
observed that Aristarchus was fainter than a nearby magnitude 7.3 star
(SAO 146315) and may have varied in brightness and size. However the
image intensifier output was quite grainy. No obvious signs of impact
flashes or cosmic rays seen during a visual inspection of the video
tape recorded. Foley commented that from UT 18:53-19:10 the Earthshine
was strong with the naked eye and Aristarchus was bright as expected.
The Cameron 2006 catalog ID=418 and weight=0. The
ALPO/BAA weight=1.
On 1991 Jan 29 at UT17:56-18:01 A.C. Cook (Frimley, UK, 20cm reflector
+ image intensified CCD camera, transparency moderate to very poor)
observed that a bright spot near Griomaldi appeared to vary in
brightness - however a possible explanation was found because the image
intensifier was found to vary in sensitivity across its imaging
surface. The Cameron 2006 catalog ID=418 and weight=0. The ALPO/BAA
weight=1.
1977 Apr 23 UT19:30-22:45 Foley (10.75" Newtonian and 4.5"
refractor, seeing II, transpaency excellent) saw som every large
variations in the brightness of Aristarchus whereas other
features in Earthshine remained stable. Aristarchus was seen to
be blue/violet. ALPO/BAA weight=2.
On 2012 May 26 UT21:21 J. Moeller (Syracuse, NY, USA, using a
Konica Minolta DIMAGE Z5 digital camera, f/7.1, 1/250 sec
exposure, ISO-50, 69mm focal length, digital zoom x3) captured
a hand held image of the Moon in daylight. On the SW limb of
the dark side of the Moon a bright spot can be seen. This has
a brightness comparable to that of Mare Serenitatis. There is
also a fainter dark blurred marking further inside the dark side.
ALPO/BAA weight=1.
Near Desseilgny in Mare Serenitatis (29E, 25N) 1971 Feb 01 UT 19:40-
20:15 Observed by Persson (Hvidore, Denmark, 2.5" refractor, x100, S=G)
"Obscur. (blurred & dark) starting between Plinius & Menelaus moving
towards Posidonius. Normal after 2 min. A little crater (white spot)
periodically disappeared for several secs regularly every few min.
There was haze above onlt this spot. A tiny crater SE of it was invis.
till 2015h then became clear & steady. Color was reddish-brown.
Drawing. (Apollo 14 watch)." NASA catalog weight=2 (low). NASA catalog
ID 1293.
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 1891 Nov 07 at UT=19:00 d'Adjuda of Lisbon, Portugal (seeing fair)
whilst observing Aristarchus noticed that the crater appeared as very
distinct luminous point in the dark. Cameron 1978 catalog ID=275 and
weight=3. ALPO/BAA weight=1.
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 1964 Jun 17 at UT 04:15-05:01 Cross et al. (Whittier, CA, USA, 19" ?
reflector, S=7-8) observed near Ross D: "Gas cloud. Motion". The
Cameron 1978 catalog ID=818 and weight=4. The ALPO/BAA weight=4.
Agrippa 1966 Nov 19/20 UT 23:58-00:14 Observed by Bartlett
(Baltimore, MD, USA, 5" reflector x283, S=4, T=5) "Faint
bluish tinge seen at base of NW wall beneath landslip" NASA
catalog weight=4. NASA catalog ID #995. ALOPO/BAA weight=3.
Cassini E 2002 Dec 11 UT 16:30-18:46 Observed by Knott (Liverpool,
England, 216mm Newtonian, x216, red and blue filters used) seeing III,
transparency good) "Observations carried out of the area extending from
the Alpine Valley to the Crater Cassini. At 17:12 a pin point bright
flash was seen NW of the rim of the crater E in white light. A 2nd pin
point flash was also seen at 18:18, this time thru a blue filter. The
2nd flash was also seen on the NW rim of the crater E. The observer
does not think this was a TLP as the seeing was III, but the flash was
so bright as to be startling. Other peaks within the Alps were bright
but were much less so in red and ble filters, where the rim of the
crater E. NW edge was very bright in all filters, including white
light. Incoming cloud prevented further observation." BAA Lunar Section
report.
On 1982 Dec 22 at UT 19:20-20:10 J-H Robinson (Teighmouth, Devon, UK,
10" reflector, x150, seeing=IV-V) could not distinguish between Messier
and Messier A. The tail of these features was very bright - two
telescopes were used. Moore (Selsey, UK, 12" reflector, seeing=III)
could see Messier A but found Messier itself obscured - just see the
west wall and thought that the comet like tail was unusual as it did
not appear divided. The Cameron 2006 catalog ID=192 and weight=5. The
ALPO/BAA weight=3.
Alphonsus and limb 1967 Apr 17 UTC 21:30 Observed by Wise (England,
6.5" reflector, x90) "3 dark patches (Alphonsus) prominent. Suspected
red patch (blink ?). (indep. confirm. of Cross 1h later?)." NASA
catalog weight=3 (average). NASA catalog ID #1024.
Plato 1967 Apr 17 UTC 21:30 Observed by Wise (England, 6.5" reflector,
x90) "Suspected a blink, (red?)" NASA catalog weight=2 (low). NASA
catalog ID #1025.
On 1967 Apr 17 UT 21:30 Observed by Wise (England, 6.5" reflector, x90)
saw a brilliant object nr. E(ast. ?) limb (West Lim IAU?) for 15m.
Check on star maps neg. (indep. confirm. of Cross 1h later?)." NASA
catalog weight=3 (average). NASA catalog ID #1024.
On 1975 May 18 at UT2115-2145 C. Lord (St Annes-on-sea,
Lancashire, UK, 76mm f/16 refractor, x170, Wratten 25, and 44a
Moon blink filters used, Transparency 4.5/5, no wind, S=F). The
west flank of Maginus, and the interior, appeared to be partly
obscured. No other features in a similar position along the
terminator were obscured. No colour blink was detected with the
filters, though a pronounced red/white light blink was noted; the
device employed a N.D. x4 filter. By 21:45UT the floor was no
longer obscured and only Magninus G was masked in a white haze;
however immediately adjacent to the terminator was an ill defined
misty patch lying where the outer flank of maginus would have
been visible. The rest of the terminator was sharp. The
obscuration was only seen to advantage in blue and int. light,
and the blue/int blink was only very slight. Findlay and
McDonnell observed 21:30-23:00 using a 25cm refractor (Seeing II-
III) but failed to see anything unsual. NASA catalog weight=3.
NASA catalog ID #1407. ALPO/BAA weight=2.
Daniell 1983 Jun 18 UT 22:06-22:25) P.Madej (Huddersfield, UK,
77mm refractor, x83,x166, seeing II-III, transparency fair).
Noted on the inside W eall a faint red rose like glow (with a
diameter? about it). The red glow varied in brightness with a
period of about 2 minutes. It looked somewhat brighter at x166.
The glow was still visible when the observation ended at 22:15
ALPO/BAA weight=1.
Vallis Alpes 1983 Jun 18 UT 22:01-22:23 P.Madej (Huddersfield, UK,
77mm refractor, x83,x250, seeing II-III, transparency fair).
After studying the whole length of this valley, the observer saw
a change in "albedo" and a small change in colour of the valley
floor near to the Plato end. This colour was not seen in a
yellow Wratten 15 filter but was noted in a purple Wratten 35
filter, and was strong in a red filter. Also the crater
Trouvelot was not seen at x250 with a x2 Barlow.Wratten 25.
ALPO/BAA weight=1.
On 1988 Feb 25 at UT20:00? P.W. Foley (Kent, UK, 12" reflector) found
that Aristarchus was very bright (especially in the UV end of the
spectrum) despite other features not being seen in Earthshine. The
cameron 2006 catalog ID=318 and the weight=1. The ALPO/BAA weight=1.
Plato 1886 Sep 06 UT 19:00? Observed by Valderama (Italy?) "Streak of
light on dark floor of crater in shadow. (sunlight between peaks on
walls?)" NASA catalog weight=0 (most unlikely to be a TLP). NASA
catalog ID #251. ALPO/BAA catalog weight=1.
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.
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 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.
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 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.
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 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.
Alphonsus 1966 May 28 UT 23:00-01:00 Observed by Smith (England, 10"
reflector) Birney (VA?, USA, 8" refactor + Moonblink) Corralitos Obs.
(NM, USA, 24" reflector + Moonblink) "Red patches (Smith), Trident Moon
Blink device suspected(?? log)earlier at 22:40. Birney observed at
2300-0100?, and gave indep. confirm? Corralitos did not confirm MB
(however they report Gassendi-- misident. ?)" NASA catalog weight=5. NASA catalog ID #938. ALPO/BAA weight=4.
On 1989 Feb 15 at UT 03:15-03:30 M. Dixon (Palenque Ruins, Mexico, 7x35
binouculars) observed a point of light that was very bright in or near
Mare Humorum. It was visible for 5 minutes then vanished. The Cameron
2006 catalog ID=353 and weight=1. The ALPO/BAA weight=1.
On 1971 Jul 31 at UT 21:40 (18:40 local time?) Miranda (Plaui, Brazil, 4" Refractor, 80x, 160x, Moon 70deg in altitude)
observed an intermittent and curious brilliance on top of a peak
(with irregular reflection) north of Mons Hadley (5E, 27N). The
Cameron 1978 catalog ID=1302 and weight=2. The ALPO/BAA
weight=2.
On 1969 Mar 27 at UT 18:42-18:47 Ringsdore (England, 15"
reflector, x350), Moseley (Armagh, Northern Ireland) and P.
Moore (Selsey, UK) observed nothing unusual in Alphonsus at
18:40UT, but at 18:45UT Ringsdore saw a blurring. At 18:43UT
Mosely saw a reddush-orange patch and this was confirmed by
Moore. NNW of the central peak, Mosely got a blink, but Moore
did not because of too much stray light. The colour was like
Jupiter's red spot, but less pronounced. The Cameron 1978
catalog ID=1118 and weight=5. The ALPO/BAA weight=4.
On 1952 Feb 05 at UT 05:10 J.Carle (USA, 8" reflector, x180)
observed the following in Plato: "A shadow in a depression, or
a cloud, or an optical illus.? Oval dark area nr. center,
disappeared in 15m clear & prominenet at first then vanished.
4 of 14 spots nr. center continuously seen while remaining
ones seen only momentarily. (seeing?) Drawing includes sketch
on March 7. His sketch shows 18 spots, 13 same as here". The
Cameron 1978 catalog ID=549 and the weight=2. The ALPO/BAA
weight=2.
Alphonsus 1966 Nov 22 UT 03:17-03:40 Observed by kelsey (Riverside, CA,
USA, 8" relector x300) "Seen first with (Eng.) moon blink, red filter
but not in the green. Not seen at 03:42h" NASA catalog weight=4 (high).
NASA catalog ID #998.
Copernicus 1932 Mar 16 UTC 18:45-19:30 Observed by Barker (Cheshunt,
England, 12.5" reflector, x310) "Term. from Cop. to lat.20S was misty &
hard to define. Rest was usual sharp definition. Mistiness cleared at
1930. Cleaned his eyepiece & prism but it persisted." NASA catalog
weight=3 (average). NASA catalog ID #402.
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.
On 1989 Feb 16 at UT02:46-03:01 D. Darling (Sun Praire, WI, USA, 3"
refractor, x140, seeing=6/10) found that the brightness of the rim of
Proclus was 9.0 (normal?). The Cameron 2006 catalog ID=354 and the
weight=0. The ALPO/BAA weight=1.
127mm f/12 GoTo scope, x62-x154, seeing: best and transparency=
6) observed that an unoficially named mountain (Lambert Gamma or
Mons Undest), near Lambert, had a "very strong glow", especially
the part that was facing the line of the terminator and this was
brighter than the side facing away. The No other object nearby
was casting as much light, even Mons La Hire. The effect was
seen for 40 minutes and the glow was present throughout. The
ALPO/BAA weight=2.
Gassendi 1967 Oct 13 UTC 19:17-20:00 Observers: Henshaw (Mansfield, UK,
8.5" reflector x112) and Corralitos Observator (Organ Pass, NM, USA,
24" reflector) "Phenomenon (brightening ?) nr. NW (ast. ?) lasting for
3s. Cont'd for 45m but nothing else unusual, (nr. Gass or in it?).
Corralitos MB did not confirm." NASA catalog weight=3 (average). NASA
catalog ID #1050.
On 1882 May 27 ay UT 20:00 an unknown observer (10" reflector) saw a
bright luminous ray near west (astronomical?) wall on floor of Plato.
Cameron suggests sunlight between peaks?. The Cameron 1978 catalog ID=
233 and weight=0. The 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.
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.
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.
On 1964 Jun 21 at UT 03:43-05:44 Harris, Cross and Helland (Whittier,
CA, USA, 19" reflector) observed south of Ross D: "Moving dark area".
The Cameron 1978 catalog ID=819 and weight=4. The ALPO/BAA weight=4.
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.
On 1991 Jan 26 at UT 23:38-23:50 D. Darling (Sun Praire, WI,
USA, 12.5" reflector, x159 and 3" refractor x90, seeing 5/10,
transparency 3/6) found that Aristarchus was brighter through
a red filter than through a blue filter on its western wall.
He checked Aristarchus in two telecopes and obtained the same
result. The Cameron 2006 catalog ID=419 and the weight=4. The
ALPO/BAA weight=3.
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.