On 2008 Oct 19 during 05:40-06:30UT D. Holt of Chipping, UK observed an
anomalous patch of illumination just to the west of the centre of the
Posidonius J crater. It is possible that this is just some high ground
on the floor protruding through the shadow filled crater at sunset.
Therefore this has been assigned a weight of 1 for now, just in case it
is a TLP - until proven otherwise.
On 1991 Jul 31 at UT 07:50 D. Louderback (South Bend, WA, USA, 3"
refractor) observed that the south floor of Aristarchus was wellow -
"almost gold, spilled over S wall on ray toward Herodotus". Cameron
comments that Bartlett often reported a yellow floor but not a spill of
the colour over to the external ray. Cameron also comments that
Louderback's refractor would refract more in blue light than in yellow,
therefore she did not think that it was due to chromatic aberation. The
Cameron 2006 catalog ID=431 and the weight=3. The ALPO/BAA weight=2.
On 1991 Jul 31 at UT 07:50 D. Louderback (South Bend, WA, USA, 3"
refractor) found that all of Mons Piton was "unusually dark". Points D,
C (E and S resp), usually brightest points, but this time were not
bright. "Whole mt was as dark as W wall usually is at this time. In
violet filter Piton disappeared completely, but was a little brighter
in red filter and points D & G showed. Color not seen by eye. No albedo
measured. Suggests red event." Cameron rules out chromatic aberation
from Louderback's refractor. The Cameron 2006 catalog ID=431 and the
weight=3. The ALPO/BAA weight=1.
Plato 1975 Jun 28/29 UT 23:00-01:20. Foley (Wilmington, UK, 12"
reflector, seeing, III, good clarity transparency). At 23:00,
00:30, and 01:15 blue was seen on the inner wall:floor southern
boundary, and red on the corresponding northern floor:wall
boundary. However by 01:20, blue was now on the S-NW floor:wall
boundary, and red on the NE-SE floor:wall boundary. Atmospheric
spectral dispersion existed in many regions, but did not change
like the colours in Plato. Similar appearance craters such as
Grimaldi, Schickard, and Riccioli, were checked for a similar
change in colour, but no change was noticed in these. ALPO/BAA
weight=1.
Aristarchus 1975 Nov 15 UT 06:34 Observed by Rule (Edinburgh, Scotland,
4" reflector x36) "Blue patch in crater (similar to many of Bartlett's
obs.?)" NASA catalog weight=2 (low). NASA catalog ID #1383.
Aristarchus 2004 Dec 02 UT 01:55-02:45 Observed by Brook (Plymouth,
England, 60mm OG x120) "Fluctuation in the brightness and definition of
A of about 1/4 to 1/2 minute period. Rest of field unaffected. Checked
for cloud wih naked eye during fades - negative. Checked for misting
and tear salt on eyepiece by shifting A around the field - negative."
BAA Lunar Section report.
Aristarchus 2004 Dec 02 UT 03:00 Observed bt Michael Amato (West Haven,
CT, USA, 127mm Maksutov, x123) "The brightness variation (as seen by
Brook earlier) was very apparent. One thing never seen before by Amato
was a thin short bright ray that extended out in the opposite direction
as Aristarchus bright ray". The higher the Moon climbed in the sky the
more obvious this short thin bright ray became. An ALPO report.
On 1973 Oct 17 at Ut 11:30 Androsan (Edmonton, Canada, 6" reflector,
x230) observed a glow 1-2 sec reappearance of Saturn's rings at a place
of ring's appearance on the dark limb. The observers attributed it to
Saturn and its rings. Cameron speculates that it might be due to gas or
dust at the lunar surface. Eye was attacted to the glow which
delineated the limb at a position angle of 210 deg at emersion, at
Earthshine at Edmonton. The Cameron 1978 catalog ID= and weight=2. The
ALPO/BAA weight=1.
Plato 1975 Jun 29/30 UT 23:05-00:30. Foley (Wilmington, UK, 12"
reflector, seeing, III, good clarity transparency). At 23:05,
blue was seen on the inner wall:floor southern boundary, and red
on the corresponding northern floor:wall boundary. However by
00:30, blue was now on the W floor:wall boundary, and red on the
E floor:wall boundary. Atmospheric spectral dispersion existed
in many regions, but did not change like the colours in Plato.
Similar appearance craters such as Grimaldi, Schickard, and
Riccioli, were checked for a similar change in colour, but no
change was noticed in these. ALPO/BAA weight=1.
Aristarchus 2004 Dec 03 UT 00:00-01:00 Observed by Brook (Plymouth,
England, 60mm OG x120) "Fluctuation in the brightness in Aristarchus
still present but less pronounced than yesterday. Also saw the bright
short ray on the opposite side to the main ray in Aristarchus that
Amato saw yesterday - but this may be normal?" BAA Lunar Section
report.
P.Foley (Nettlestead, UK, 12" reflector) noticed a translucent bluish
glow in Earthshine coming from this crater, despite it being close to
the nright terminator. Cameron 2006 catalog extension ID=200 and
weight=2. ALPO/BAA weight=3.
Marcus Price (Camberley, Surrey, UK) noted that Aristarchus
was extremely bright. A 6" reflector was used. The Cameron
2006 Catalog ID is #98 and the weight is 1. The ALPO/BAA weight
is 1 too.
M.C. Cook (Frimley, UK, seeing=III-II) noticed that the crater had a
blue/green colour and that this varied, filling a large circular patch,
brightly illuminating to the ESE-SSE (IAU?) spilling over the wall and
the rim. Shadows inside the crater were large and elongated. The filter
response was greater in the blue than through a yellow or red
Microfiche. Spurious colour was noticed elsewhere but not in
Aristarchus. Cameron 2006 extension catalog ID=313 and weight=3.
ALPO/BAA weight=3
Messier A 1976 Sep 15 UT 21:05 Observed by J.H-Robinson
(Teignmouth, UK, 26cm Newtonian, Wratten 25 and 44a filters,
x200, seeing very poor). Messier A was fainter than Messier in
blue light. ALPO/BAA weight=1.
Eratosthenes 1976 Jun 20 UT 07:57 Observed by Bartlett
(Baltimore, MD, USA, 4.5" refractor, 40-450x, S=6.5, T=4-3)
"Floor covered with shadow & c.p. seen as 5deg bright spot.
Another minute spot 5deg bright on SE floor in shadow. (only low
hills on floor in SE. spot on terrace?" NASA catalog weight=4
(high). NASA catalog ID 1436.
Eratosthenes 1976 Aug 18 UT 06:12 Observed by Bartlett (Baltimore, MD,
USA, 4.5" refractor, 45, 225x, S=6, T=3-2) "Again, c.p. is vis. within
shadow but much brighter than on Aug, 4 (4 deg) & similar to June at
same col. The 2nd bright spot seen in June was not seen tonite.
(roughness on walls seen in LO IV & V pics show why these pseudo-
shadows appear)." NASA catalog weight=4 (high). NASA catalog ID #1445.
On 2012 Oct 08 UT12:00 C. Hastorf (Chuck's Bobcat, AZ, USA, 5"
SCT, seeing 3.5-4 out of 5). Strange lightness seen on
shadowed floor of Plato. ALPO/BAA weight=1.
Aristarchus 1969 Jan 12 UT 12:00 Observed by Taboada (Mexico,
Seeing Excellent) "Region showed same characteristics as
previous days, perhaps a little darker color brown but more
remarkable. Used red, blue & green filters & difference in color
noted in & out of region. (permanent ground color seen?)." NASA
catalog weight=3. NASA catalog ID #1116. ALPO/BAA weight=2.
On 1979 Jul 18 at 08:56-09:05 D.Darling (Sun Praire, WI, USA, 12.5"
reflector, x80) found Cleomedes (and other features) to glow, some with
flashes and pulsations. At 09:06 UT Cleomedes was glowing, but by
09:06UT it could no longer be seen. Cameron 2006 catalog ID=61 and
weight=0. ALPO. BAA weight=1.
On 1979 Jul 18 at 09:40-10:00 D.Darling (Sun Praire, WI, USA, 12.5"
reflector, x80) found that Condorcet (and other features - 12
in total) were blue in colour - some had flashes that expanded from the
centres (at different rates). Cameron 2006 catalog ID=61 and weight=0.
ALPO/BAA weight=1.
On 1979 Jul 18 at 09:40-10:00 D.Darling (Sun Praire, WI, USA, 12.5"
reflector, x80) found that Delambra (and other features - 12
in total) were blue in colour - some had flashes that expanded from the
centres (at different rates). Cameron 2006 catalog ID=61 and weight=0.
ALPO/BAA weight=1.
On 1979 Jul 18 at 09:40-10:00 D.Darling (Sun Praire, WI, USA, 12.5"
reflector, x80) found that Macrobius (and other features - 12
in total) were blue in colour - some had flashes that expanded from the
centres (at different rates). Cameron 2006 catalog ID=61 and weight=0.
ALPO/BAA weight=1.
On 1979 Jul 18 at 09:40-10:00 D.Darling (Sun Praire, WI, USA, 12.5"
reflector, x80) found that Manilius (and other features - 12
in total) were blue in colour - some had flashes that expanded from the
centres (at different rates). Cameron 2006 catalog ID=61 and weight=0.
ALPO/BAA weight=1.
On 1979 Jul 18 at 09:40-10:00 D.Darling (Sun Praire, WI, USA, 12.5"
reflector, x80) found that Mare Crisium (and other features - 12
in total) were blue in colour - some had flashes that expanded from the
centres (at different rates). Cameron 2006 catalog ID=61 and weight=0.
ALPO/BAA weight=1.
On 1979 Jul 18 at 09:40-10:00 D.Darling (Sun Praire, WI, USA, 12.5"
reflector, x80) found that Maskelyne A (and other features - 12
in total) were blue in colour - some had flashes that expanded from the
centres (at different rates). Cameron 2006 catalog ID=61 and weight=0.
ALPO/BAA weight=1.
On 1979 Jul 18 at 09:40-10:00 D.Darling (Sun Praire, WI, USA, 12.5"
reflector, x80) found that Menelaus (and other features - 12
in total) were blue in colour - some had flashes that expanded from the
centres (at different rates). Cameron 2006 catalog ID=61 and weight=0.
ALPO/BAA weight=1.
On 1979 Jul 18 at 09:40-10:00 D.Darling (Sun Praire, WI, USA, 12.5"
reflector, x80) found that Proclus (and other features - 12 in total)
were blue in colour - some had flashes that expanded from the centres
(at different rates). Cameron 2006 catalog ID=61 and weight=0. ALPO/BAA
weight=1.
On 1979 Jul 18 at 09:40-10:00 D.Darling (Sun Praire, WI, USA, 12.5"
reflector, x80) found that Promontorium Agarum (and other features - 12
in total) were blue in colour - some had flashes that expanded from the
centres (at different rates). Cameron 2006 catalog ID=61 and weight=0.
ALPO/BAA weight=1.
On 1979 Jul 18 at 08:30-10:00 D.Darling (Sun Praire, WI, USA, 12.5"
reflector, x80) found that Reichenbach glowed for a short time and then
faded. Cameron 2006 catalog ID=61 and weight=0. ALPO/BAA weight=1.
On 1979 Jul 18 at 08:30-10:00 D.Darling (Sun Praire, WI, USA, 12.5"
reflector, x80) found that Stevinus glowed for a short time and then
faded. Cameron 2006 catalog ID=61 and weight=0. ALPO/BAA weight=1.
On 1979 Jul 18 at 09:40-10:00 D.Darling (Sun Praire, WI, USA, 12.5"
reflector, x80) found that Tisserand (and other features - 12 in total)
were blue in colour - some had flashes that expanded from the centres
(at different rates). Cameron 2006 catalog ID=61 and weight=0. ALPO/BAA
weight=1.
Grimaldi 1998 Mar 22 UT05:15-06:00 S. Beaumont (Windermere, UK,
127mm rich field refractor, seeing III, transparency Good)
observed that the northern half of Grimaldi seemed much lighter
than the southern half. She comments that she has seen this
before in last quarter phases, but it was really quite marked
how lighter the northern half was on this occasion. The ALPO/BAA
weight=1.
Vitello 1939 Aug 09 UT 08:00 Observed by Haas? (NM?, USA, 12?"
Reflector) "S.part of dark area was I=4.0 comp. with #452 & #453, when
cond. were similar on all 3 dates (phase similar too -- normal
tonite?)" NASA catalog weight=4 (high). NASA catalog ID #457.
2012 Sep 09 UT 23:11-23:37 A.Mineev (Russia) observed a bright
flash near to Encke. ALPO/BAA weight=1.
Herodotus 1976 Aug 21 UT 08:40 Observed by Bartlett (Baltimore, MD,
USA, 4.5" reflector, 45-300x, S=4-3, T=6) "Pseudo peak seen as 5deg
bright spot lying on diagonal dark band that crosses the floor from NE
to SW & becomes vis. only at low sun. Never saw the pseudo peak in
afternoon before -- usually vis. only nr. sunrise, (this would be
expected if it is a low hill as seen on Apollo oblique pics). Other
times c.p. seen were May 11 (6deg), Jun 10 (13 deg), Sep 6 (8 deg),
Sep 7 (21 deg) & Sep 19 (10 deg) solar altitudes. (21 deg seems too
high a slope for the hills)." NASA catalog weight=4 (high). NASA
catalog ID #1446. ALPO/BAA weight=3.
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.
Brilliant blue color seen at first for seconds, later for min
2h later, in blue filter. Cameron 1978 catalog weight=4 (high).
Cameron 1978 catalog ID 572.
Plato 1971 Oct 30 UT 19:35-20:55 E.Watkins (Braintree, UK, 4.5"
reflector, x45,x150, x225), thought he saw a faint patch at
19:35 and it still was visible at 19:40. At 19:50-19:55 he saw
what may have been the remainder. At 20:55 he noticed a shadow
in the area. ALPO/BAA weight=1.
Schickard 1972 Sep 19 UT 19:45-20:25, 20:00-23:30 Observed by Watkins
(Herts., Eng. 4.5" reflector, x225, S=G) Amery (Reading, Eng.m 12"
reflector?), Fitton (Lancashire, Emg., 8.5" reflector) and Moore
(Selsey, Eng., 12.5" reflector?, 4.5" refractor 45-225x, S=P)
"Luminous, nebulous spot attracted Watkin's att'n. Got brighter.
Checked 'scope--not instru. Obj. had greenish-gray color, size @ 15km.
Amery & Fitton with blink devices noted nothing unusual at later times
(2000-2330h). Aris., Plato, Gass. were neg. at 1930-2025h (date not
given, guessed at fr. available info.). Turbulence, lasting
secs. at a time." NASA catalog weight=2. NASA catalog ID #
1344. ALPO/BAA weight=2.
On 1990 Oct 1st at 00:44-01:24UT D Darling (Sun Praire, WI, USA)
observed that Gassendi still had a blink effect when viewed through
blue (Wratten 38A) and red (Wratten 25A) filters. No effect was seen on
Aristarchus. Gassendi was brighter in the red filter and this was
confirmed by Weier. Sketches were made and brightness measurements
taken. Both observers used a 12.5" reflector x159. At 01:00UT the NW
wall was 7.5, the SW wall 8.0, the S. wall 7.5, the floor 6.0, the
outer E. wall 8.0, the N. floor 5.5. Gassendi A W. wall was 9.5,l
Aristarchus W. floor was 8.0, NW wall 8.0, shadowed floor 0.0, E. outer
wall 7.0, NBP 5.5, area between Aristarchus and Herodotus 6.0, and the
comet like tail: 8.2 on the E. and 8.5 on the W. The Cameron 2006
catalog extension TLP ID=412 and weight=5. The ALPO/BAA weight=4.
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.
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 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 2016 Jun 17 UT 05:00 A.Anunziato (AEA, Argentina Meade ETX
105, seeing 7/10, sketch made) observed a very tiny light spot
where the shadow from topographic relief to the south of
Vallis Schroteri nerges into the crater rim shadow on the
floor of Herodotus. There should be no light spot here.
ALPO/BAA weight=1.
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.
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.
On 1990 Oct 02 at 02:25-02:45UT D. Darling (Sun Praire, WI, USA using a
12.5" reflector at x159, with red and blue filters), saw a blink
effect on the west wall of Plato i.e. brighter through a blue filter
than through the red. No Colour blinks seen on Gassendi or Aristarchus.
Cameron 2006 Catalog TLP=413 and weight=4.
On 1988 Jan 02 at 06:41-07:08 UT D. Louderback (South Bend, WA, USA,
using a 8" reflector, seeing 4 out of 10) observed that at 06:56 UT
Aristarchus floor (point F) brightened rapidly from an intensity of 5.2
to 6, however at 07:08 UT the spot returned to normal. He also noticed
that the bands on the walls varied every few minutes. A mist like
appearance was seen on the floor of Aristarchus. Through a red filter
he could see through the haze, but floor detail could not be seen
through a blue filter. Cameron 2006 extension catalog ID=316 and
weight=4. ALPO/BAA weight=3.
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 1980 Apr 28, Louderback (South Bend, WA, USA using a 8" reflector
and a 2.5" refractor) observed a very bright reg region on top of the
south west rim of Aristarchus crater. This was on the same side as the
ray system between Aristarchus and Herodotus. Louderback noticed some
chromatic aberation - blue where he had seen the red patch before.
Louderback suspects chromatic aberation was the cause although did not
see red in that region ever again. "Patch was between his observation
points A and C. Point C was 5 points brighter in the red filter than in
the blue." A sketch was made. Cameron suspects that the TLP was real.
Cameron 2006 TLP catalog extension ID=92 and weight=3. ALPO/BAA
weight=2.
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.
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.
Variations in vapor column rising from the Cobra Head feature
(seen on several nights in succession) and also in the visibility of
craterlets A, C, F. Sunrise +2d. (time est. fr. gives colongitude).
Cameron 1978 catalog ID=279 and weight=3. Pickering was observing from
the southern station of Harvard University in Arequipa, Peru.
Manilius 1939 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.
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.
Mare Humboldtianum 1951 Jan 21 20:47-22:00 UT observed by Baum
(Chester, England). The appearance of some mountains on the
limb appeared to change over time, with some mistiness. ALPO/BAA
weight=2.
Aristarchus 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.
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, Cobra Head, 1969 Dec 23 UT 05:19-05:34 Observed by
A.R. Taylor (Buckinghamshire, UK, 8.5" reflector, 240x, Wratten
25 and 80B) Strong blink in crater at 0519. All traces gone by
0534. Could only see in filters, Plato, Copernicus, Gassendi all
normal. Obscur. also in Cob. Head." NASA catalog weight=4. NASA
catalog ID #1230. ALPO/BAA weight=3.
Stevinus 1961 May 29 UT 02:45-03:30 Observed by Cameron (Adelphi, MD,
USA, 3.5" reflector, x160, Questar, Seeing=good) "Craters stood out
like glittering points (small craters on rims?). Only anomalies among
many features examined (specular refl. from flat surface?)." NASA
catalog weight=4. NASA catalog ID #738. ALPO/BAA weight=1.
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.
Furnerius 1961 May 29 UT 02:45-03:30 Observed by Cameron (Adelphi, MD,
USA, 3.5" reflector, x160, Questar, Seeing=good) "Craters stood out
like glittering points (small craters on rims?). Only anomalies among
many features examined (specular refl. from flat surface?)." NASA
catalog weight=4. NASA catalog ID #738. ALPO/BAA weight=1.
On 1992 Oct 10 at 18:57-19:04 UT I.S.Brukhanov (of Minsk, Belarus,
using a 6" refractor x40 and x98) saw a star like point inside Plato
crater of similar brightness to the central peak of Alphonsus. The
event lasted 90 seconds before weakening and vanishing completely at
19:04UT. Cameron 2006 catalog extension ID=455 and weight=3.
ALPO/BAA weight=3.
Gassendi 1966 Dec 27 UTC 06:30-07:05 Observed by Kelsey (Riverside, CA,
USA, 6" reflector?) "Very faint blink on SW (ast. ?) floor & on another
N. of it on NW floor. Obs. considers obs. very suspect" NASA catalog
weight=1 (very poor). NASA catalog ID #1006.
Plato 1878 Nov 09 UTC 21:00 UTC Observed by Klein (Cologne, Germany,
6" refractor?) "Faint, but unmistakable white cloud not seen before."
NASA catalog weight=4. NASA catalog ID #207.
Aristarchus 1954 Oct 12 UT 00:55-02:10 Observed by Bartlett
(Baltimore, MD, USA, 3.5" refractor x100, S=5-6, T=5) "Pale
violet radiance on S.wall SE, E, NE walls, & c.p. At 0409 strong
violet tint E 1/2 of fl.very faint on W. 1/2 of floor & W. wall.
Dark violet on nimbus & pale violet on Mt. m" NASA catalog
weight=4. NASA catalog ID #576. ALPO/BAA weight=2.
On 1989 Oct 14 UT 19:00?, 22:00? P.W. Foley (Kent, U.K., using a 12"
reflector) noted that although the brightness of Aristarchus crater
seemed steady, that there was just too much detil to see inside the
crater than one would expect. Appeared as two craters - Cameron
commented that this was often seen by Bartlett. Several observers
apparently confirmed this TLP? Cameron 1978 catalog extension ID=379
and weight=5. ALPO/BAA weight=2.
Aristarchus 1973 Feb 15 UTC 17:07-19:31 Observed by Theiss (located at
51N 5.67E) "area 4-5 diameters of Aristarchus were coloured clearly
yellow-red" 120mm reflector used. Ref Hilbrecht & Kuveler (1984) Moon
and Planets Vol 30 p53-61. ALPO/BAA weight=1.
Plato 1973 Aug 13 UT 22:25-22:35 observed by Pedler (Devon, UK).
Observer noticed a slight blink on a lighter patch on the floor
just beneath the south(?) rim using Moon blink filters.
ALPO/BAA weight=1.
David Darling observed bright glittering on Aristarchus. This
was followed by a flare up in brightness at 00:38:05 UT in the
comet-like ray area of the crater equivalent in intensity to the
central peak. Then he saw another one on the north east rim of
Aristarchus of the same brightness. A third flare was seen at
00:49UT in south of Herodotus, on the comet-like ray. Another
two flares were observed at 00:56UT on the north west rim of
Aristarchus. Darling suspects that these effects were due
to seeing effects and Cameron agrees. However Weier suspects
that they were TLP? Brightness measurements by Weier were for
the south west rim of Herodotus 8.0, for a spot at the Cobra's
Head 9.0 and 7.5 for C.H. Cameron apparently did not see the flashes
but did suspect that the interior of Aristarchus was a bit unusual.
Don Spain did not see anything unsual at all. Cameron 2006 extended
catalog ID=380 and the observation weight=3. The ALPO/BAA weight=2.
Aristarchus 1967 Dec 16 UTC 22:00? Observed by Farrant (Cambridge,
England, 8" reflector) "Crater took on an unusual appearance on inner
NE (ast. ?) wall. Showed a very pale blue & the opposite wall a pale
red color seen in no other features. Lasted only 10m & survived a
change of eyepieces." Seeing=I (Antoniadi). NASA catalof weight=3
(average). NASA catalog ID #1056.
On 2002 Mar 29 at 02:20-02:38UT C. Brook (Plymouth, UK, 60mm refractor,
x120 - no cloud, slight haze, no wind, seeing good) noticed during
first part of observing period that Aristarchus was getting steadily
brighter, very much brighter than Proclus. This continued until 02:36UT
when it dimmed suddenly over a period of about a minute or so. No
colour effects seen. ALPO/BAA weight=2.
On 2002 mar 29 at 02:20-02:38UT C. Brook (Plymouth, UK, 60mm refractor,
x120 - no cloud, slight haze, no wind, seeing good) noticed during
first part of observing period that Aristarchus was getting steadily
brighter, very much brighter than Proclus. This continued until 02:36UT
when it dimmed suddenly over a period of about a minute or so. No
colour effects seen. ALPO/BAA weight=2. Just as an after thought - was
it Aristarchus that was varying, or Proclus?
Louderback, of South Bend, WA, USA observed a bright area over
Mons Anguis and Eimmart - it resembled a comet and had a bluish
colour and varied in brightness. The colour was confirmed as it
was not seen in a red filter but could be seen in blue and white
light. Other features were checked but did not show anything
similar although a violet glare was suspected in the blue filter. A
sketch was made. Observer made Eimmart 8 in brightness at 07:30UT.
Noted that the area around Eimmart appeared opaque at times and less so
at other times. At 08:52UT the phenomenon was seen again. On May 2nd
a bright spot was still seen in the region but it was not changing
dimensions. During the observation on Apr 30th the atmospheric
transparency was excellent. A 2.5" refractor was used. Reference:
Personal communication from Louderback to Cameron on 1980 Jul 16th.
The Cameron 2006 catalog extension ID of this TLP was 93 and the
weight was 4. ALPO/BAA weight=3.
Proclus 2002 Mar 29 UT 05:27-05:36 Observed by Darling (Sun Praire, WI,
USA, 12.5" f/5 Newtonian, +Rotating polaroid visual densitometer)
"Observations made following telephone alert call about Brook's report.
Aristarchus, Proclus and Censorinus monitored for brightness variations
from 04:41-05:37UT. Apart form a change in transparency due to cirrus
cloud at 05:11-05:18, there were significant dimmings of the
brightnesses of Proclus at 05:27. Aristarchus remained constant - this
suggested that Clive Brook's earlier report was not a TLP in
Aristarchus, but possibly in Proclus which he was using as a
comparison" ALPO Lunar Section Report. ALPO/BAA weight=3.
Censorinus 2002 Mar 29 UT 05:27-05:36 Observed by Darling (Sun Praire,
WI, USA, 12.5" f/5 Newtonian, +Rotating polaroid visual densitometer)
"Observations made following telephone alert call about Brook's report.
Aristarchus, Proclus and Censorinus monitored for brightness variations
from 04:41-05:37UT. Apart form a change in transparency due to cirrus
cloud at 05:11-05:18, there were significant dimmings of the brightness
of Censorinus at 05:36UT. Aristarchus remained constant" ALPO Lunar
Section Report. ALPO/BAA weight=3.
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.
CCD images taken through Wratten 25 (red+near IR) and 87
(near IR only) filters. Between 00:02 and 00:25UT there
was some slight evidence that a fade may have taken place
however careful analysis by Cook casts doubt on this.
Probably it was more related to a degradation in image
quality due to seeing than a true TLP. An ALPO/BAA
weight of 1 has been assigned.
Aristarchus 1973 Oct 12 UTC 18:13-18:45 observed by Pasternak "Bright
region of the S. of the crater, color was red." - Hilbrecht and
Kuveler, Earth, Moon & Planets, 30 (1984), p53-61. ALPO/BAA weight=1.
Enhancement of spectrum in UV and CaI recorded on photoelectric
spectrometer scans by Grainger and Ring in Italy. Effect seen on
Aristarchus. Cameron 1978 catalog ID=740 and weight=5. ALPO/BAA
weight=5.
Aristarchus 1962 May 20 UTC 08:00? Observed by Wildey, Pohn (Mt Wilson,
CA ?, 60" reflector? Photometer) "Reddish color in Aris. 0.88
magnitudes brighter than normal (photometry)." NASA catalog weight=5
(very good). NASA catalog ID #758. ALPO/BAA weight=3.
Bullialdus 1962 May 20 UTC 08:00? Observed by Wildey, Pohn (Mt Wilson,
CA ?, 60" reflector? Photometer) "1.05 magnitudes brighter than normal
(photometry)." NASA catalog weight=5 (very good). NASA catalog ID #758.
ALPO/BAA weight=2.
Kepler 1962 May 20 UTC 08:00? Observed by Wildey, Pohn (Mt Wilson, CA
?, 60" reflector? Photometer) "1.03 magnitudes brighter than normal
(photometry)." NASA catalog weight=5 (very good). NASA catalog ID #758.
On 1970 Nov 14 UT20:10 J.Coates (Burnley Astromical Society,
8.5" reflector, x102 and x204) saw a dirty green colour on the
NW region of the crater, in patches, with a green area nearby.
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!
1969Jan04 UT19:30-20:00 W.Deane (Hendon, UK, 2" refractor)
observed a bright yellow spot just E of Aristarchus, stretching
from the S. end of Montes Harbinger to the S. wall of Prinz. The
ALPO/BAA weight=1. ALPO/BAA weight=1.
Copernicus 1975 Jul 24 UT 22:52 Observed by Robinson (Teignmouth,
England, 10" ? reflector or 4" refractor?) "Copernicus indistinct in
red and blue filters" NASA catalog weight=3 (average). NASA catalog ID
#1409.
Fracastorius 1975 Jul 24 UT 22:52 Observed by Robinson (Teignmouth,
England, 10" ? reflector or 4" refractor?) "Fracastorius had a blink
(red or blue?)" NASA catalog weight=3 (average). NASA catalog ID #1409.
Tycho 1975 Jul 24 UT 22:52 Observed by Robinson (Teignmouth, England,
10" ? reflector or 4" refractor?) "Tycho indistinct in red and blue
filters" NASA catalog weight=3 (average). NASA catalog ID #1409.
Aristarchus 1954 Nov 12 UTC 02:20-03:05 Observed by Bartlett
(Baltimore, MD, USA, S=5-6, T=3-4) "Blue-violet glare on EWBS &
whole length of E. wall. Suspected viol. tint on VA; uncertain @
m" NASA catalog weight=4. This had faded later by 05:07. NASA
catalog ID #582. ALPO/BAA weight=2.
On 1996 Jul 31 at 22:40UT P. Moore (Selsey, UK, 15" reflector, x300)
noticed a lack of detail in the Cape Agarum area - he would normally
have expected to have seen some craterlets. However he would not rate
this observation much because the seeing was only III and he does not
think that it was an obscuration. However just in case he wanted to
record this report in the archives. ALPO/BAA weight=1.
Alphazen Alpha 1972 Oct 23 UT 22:10?-22:13? (Stoke-on-Trent, UK,
21cm Newtonian, x217, seeing very good). Flickering colours seen
on the north field of Alhazen Alpha mountain. Above UTs
estimated by the observer, but the duration of the effect was 3
minutes. Colouration centred on the hills that run north to
south between Mare Anguis and Mare Crisium. The colour
alternated from east to west about 2 or 3 times per second. The
colour was not apparent to the north or south, or indeed on any
other features. Telescope field of view moved, but effect stayed
in the same place on the Moon. Moon't terminator scanned for 15
minutes afterwards, but the effect did not recur. The colour
seen was mostly red, with a band of orange, and a strip of
yellow nearest the hills, the proportions being 6:2:1. The bands
seemed to arc up steep above the Moon's surface and flatten out
over the mare surface either side of the hill features. No
filters were used in the observation. Observer suspects some
kind of diffraction spectrum to explain the larger dispersion in
the red end of the spectrum. ALPO/BAA weight=3.
Gassendi 1967 Jan 28 UT 00:04-01:06 Observed by Moseley (Armagh,
Northern Ireland, 10" refractor, x350, Seeing=Good) "Small moon blink
(Eng.) not quite concentric with the crater, half way from c.p. to SE
(IAU?) wall. Lasted till 0007h then clouds. Seen again at 0100h-0106h,
then lost with poor seeing. Looked again at 0148, 0230, 0310, but neg.
Other areas also neg." NASA catalog weight=4 (high). NASA catalog ID #
1013.
Plato 1870 Apr 17 UT 22:00? Observed by Gledhill? (Halifax, England,
9" refractor) "Group 1 again in illum. as in Aug., Sep. 1869
observations." NASA catalog weight=2 (low). NASA catalog ID #166.
On 1986 Feb 26 at 05:00UT a photograph was obtained by T. Kohman of
Pittsburgh, PA, USA (3.5" Questar and 0.25 sec exposure) that had two
bands above the limb, resembling ejecta plumes. Cameron suspects that
these are probably flare from the eyepiece optics. Cameron 2006
extension catalog ID=282 and weight=0. ALPO/BAA weight=1.
Aristarchus 1969 Dec 26 UT 03:35-03:45 Observed by Kilburn (England,
6" x192) "Suspected faint blink & glow outside of SW(IAU?) wall. Large
area was gray toward Herod. Another blink inside between 2 bands
at0330h. At 0345h neither blinks seen. Blink seen in blue (=red
event?). Next nite crater was normal." NASA catalog weight=3 (average).
NASA catalog ID #1231.
Aristarchus 1968 Dec 07 UT 07:00? observed by Corralitos Observatory
(Organ Pass, NM, USA, 24" reflector+Moon Blink) "Bluing around 3
craters, strongest at Aris. Lasted several days. Photos show 30% more
intensity in blue filter than in red or neutral. Moon's declination
northerly. Obs. think it was due to atm. effects" NASA catalog weight=5
(very high). NASA catalog ID #1105.
On 1968 Dec 07 at UT 07:00? Corralitos Observatory (Organ Pass, NM,
USA, 24" reflector and Moon Blink device) observed a bluing around
three craters, one of which was Kepler. This effect lasted several
days. Photographs were taken that show30% more intensity in the blue
filter than in red or neutral. The Moon's decination was northerly. The
observers suspect that it was an atmospheric efect and not a TLP. The
Cameron 1978 catalog ID=1105 and the weight=5. The ALPO/BAA weight=3.
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.
Gassendi 1940 Jul 22 UT 05:00 Observed by Haas (NM?, USA, 12"
reflector?) "Largest bright spot in SE part of floor had I=8.6,
but 6+ on other dates. (see #472, 474 & 475). (8.6 is normal?)"
NASA catalog weight=4. NASA catalog ID #469. ALPO/BAA weight=3.
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.
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.
In 1897 Oct 14 at UT 00"50 Pickering (Cambridge, Mass. USA, 15"
refractor?) observed "Refractive displacement of lunar atm. at
bright limb was 0.4" (time is for occultation of Alctone in
Pleiades)" The Cameron 1978 catalog ID=294 and the weight=3. The
ALPO/BAA weight=1. Note this may? refer to an occultation, in
which case it will be pointless to observe again for a
particular illumination.
Birt 1972 Sep 25 UT 23:20-23:45 Observed by Doherty (Stoke-on-Trent,
England, 10" reflector x280, S=VG) "All bright areas were similar in
intensity (albedo) but 2 larger ones at times seemed brighter. N & S.
The E. IAU? wall of the small craterlet showed most prominently & at
times suspected a faint pt. of light just W. of its center. This was
very suspect however." NASA catalog weight=1 (very low). NASA catalog
ID #1345.
Grimaldi 1937 Sep 23 UT 05:00 Observed by Firsoff (Glastonbury,
England, 6" reflector + filter) "Variations in green. Strong green on
this date. Other dates of variation are:
Date Time Color
4/29/37 0930 slight
3/23/38 09?30 strong
7/24/38 0830 gray-green
NASA catalog weight=4 (high). NASA catalog ID #424.
On 1944 Mar 12 at UT 23:00 H.P. Wilkins (Kent, UK, 8.5" reflector)
observed that Plato appeared incomplete - the central crater had it's
north wall obscured. cameron comments that maybe this was due to the
low altitude of the Moon? The Cameron 1978 catalog ID=491 and
the weight=4. The ALPO/BAA weight=2.
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?
Near Bacon, Barocius, Nicolai i.e. 16E-25E, 52S-42S 1878 Nov 13 UTC
02:30 Observed by Hammes & others (Oskaloose, Iowa, USA, 6.5"
reflector) "Lunar volcano (drawing) (investigation & correspondence
cast doubt on location)" NASA catalog weight=? NASA
catalog ID #208.
LeCroy Jr. and Sr. (Springfield, VA, 4.5" reflector, x75, S=VG, T=3)
observed the following in the Aristarchus and Herodotus region: "Prior
to 0542h the 2 craters were 2 bright spots within bright areas. Then a
brightness developed merging them together into one big bright area
with no discernable details. Returned to normal at 0554h. Sketches.
Albedo=10+ where normal albedo is 9.5". The Cameron 1978 catalog ID=
1413 and weight=4. The ALPO/BAA weight=3.
On 2006 Dec 08 at UT 17:32 (+/- 2 min) M. Collins (Palmerston
North, New Zealand, 3.5" Maksutov, 40mm eyepiece, seeing III-IV)
observed during daylight hours an extremely bright flash south of
Godin. It flared up and down over a fraction of a second an appeared
three times brighter than the Moon background itself. The ALPO/BAA
weight=1.
Plato 1877 Nov 23 UT 22:00? Observed by Crain, Klein, Eng.
officer (France?, Cologne, Germany, England?, 6" refractor?) "A
luminous triangular object on floor & each craterlet on floor
outlined as a lum. pt. (indep. confirm.?)" NASA catalog weight=5
(very high). NASA catalog ID #199. ALPO/BAA weight=4.
On 1955 Oct 04 UT 22:00 Dubois and Kozyrev (Crimea, Soviet Union,
50" reflector) observed the following in Aristarchus crater: "Low
disprsion (d=.13 whereas on Oct 28 & Nov d=0.03) Spectogram showing
emiss. in central part nr. H&K". Cameron says that this is a
confirmation of the previous Bartlett TLP? The Cameron 1978 catalog ID=
619 and weight=5. The ALPO/BAA weight=5.
Aristarchus 1969 Nov 27 UT 20:00? Observed by Miles (coventry, England,
5" refractor, x120) "Strong pink color in N. part; spectacular strong
blink. Did not notice obscur. Bands were vis." NASA catalog weight=4
(high). NASA catalog ID #1227.
Pico 1976 Aug 13/14 20:50-01:00, 03:15 Observed by Foley? or Findlay?
(England, S=E) "Dark line to the E. (IAU?) of Pico obs. & persisted
till 0100h. On 14th the whole area around Pico was gray & diffused. At
0315h detail reappeared & NW corner sparkled. Small brilliant spot
appeared due N. of it & the albdeo exceeded Aristarchus (=9+ ?)" NASA
catalog weight=3 (average). NASA catalog ID #1443.
1936 Oct 04 UT07:42 W.Haas drew bands, many smaller spots on
floor. Pickering's atlas 9D col 141 shows bands but no bright
spots. Haas' location Aliance, OH, USA. Reference: Haas, W.
J.Royal Astr. Soc. Canada. Cameron 1978 catalog ID=416 and
weight=3. ALPO/BAA weight=2.
Aristarchus 1969 Dec 28 UT 00:24 Observed by Kilburn (England, 6"
reflector x192) "Blink in same place as #1231. Very faint and large
area." NASA catalog weight=3 (average). NASA catalog ID #1232.
Observed by Bartlett (Baltimire, MD, USA, 5" reflector, x150) "N. half
of crater hazy & ill-defined". S=5, T=4. NASA catalog weight=4 (good).
NASA catalog ID 571.
Schroter's Valley & Vicinity 1897 Oct 15 UT 19:00 Observed by
Pickering (Cambridge, Mass. USA, 15"? refractor) "Variations in vapor
col. change in direction of cloud rising from F is marked - (time est.
from given colon.)" NASA catalog weight=3 (average). NASA catalog ID #
292.
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.
Aristillus 1939 Jul 06 UT 05:00 Observed by Haas? (NM?, USA,
12" reflector?) "Dark area in W. part of floor was I=1.3 but
other dates were brighter. or same. yet cond. similar (see #
454, 459 & 461)" NASA catalog weight=4. NASA catalog ID #450.
ALPO/BAA weight=3.
Fracastorius 1975 Jul 27 UT 22:45 Observed by Robinson (Teignmouth,
England) "Blink seen. Floor brighter in red than in blue. Suspects
colour is spurious". NASA catalog weight=1 (very low). NASA catalog ID
#1410.
Plato 1975 Jul 27 UT 22:45 Observed by Robinson (Teignmouth, England)
"Blink seen. Floors brighter in red than in blue". NASA catalog weight=
1 (very low). NASA catalog ID #1410.
Theophilus 1975 Jul 27 UT 22:45 Observed by Robinson (Teignmouth,
England) "Blink seen. Floor brighter in red than in blue". NASA catalog
weight=1 (very low). NASa catalog ID #1410.
On 1979 Jul 14 at UT 00:24-01:10 P. Madej (Huddersfield, UK, 15cm
reflector, x35, x52, x73 and x110, seeing IV-V, transparency very
good). Note that the observing date was also written as Jul 18th in the
original report? Puiseaux was very clear in white light, but could not
see the cenrtral peak. The central peak though was visible through a
Waretten 15 (yellow) filter. The ALPO/BAA weight=1.
Messier A 1951 Oct 20 UT 00:00? Observed by Moore (England)
"Brilliant white circular patch in it. has seen it & Messier
blurred several times." NASA catalog weight=4 (good). NASA
catalog ID #545 Note that the date and time given are probably
wrong as the Sun is ~7deg below the local horizon at this time.
ALPO/BAA weight=1 to reflect this error.
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 1973 Oct 16/17 UT 22:16-01:00 Observed by Morgan
(England) "Invis. of NW wall bands. Seeing by no means
perfect" NASA catalog weight=1. NASA catalog ID #1376.
ALPO/BAA weight=1.
Aristarchus region 1955 Sep 07 UT 03:00 Observed by Firsoff (Somerset,
England, 6.5" reflector x200, S=VG) "A dirty brown misty effect on the
area NE (Ast. ?) of crater. Darkened in blue & yellow filters alike."
NASA catalog weight=5 (very high). NASA catalog ID #608.
Copernicus 1955 Sep 07 UT 03:20 Observed by Firsoff (Somerset, England,
6.5" reflector x200, S=VG) "Brightening up of crater in the blue
filter" NASA catalog weight=4 (high). NASA catalog ID #607.
In 1955 Sep 07 at UT 03:45-05:20 Bartlett (Baltimore, MD, USA, S=5, T=
3) observed the following in Aristarchus crater: "Strong blue-viol. gl.
in E, NE rim & E. base of c.p. Dark viol. nimbus, granular aspect of
floor". Cameron suggests that this is confirmation of Firsoff's TLP of
the same day? The Cameron 1978 catalog ID=609 and weight=5. The
ALPO/BAA weight=2.
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.
Aristarchus 1956 Jul 28 UT 05:20-05:55 Observed by Bartlett
(Baltimore, MD, USA, 5" reflector, x180, S=5, T=4) "Vivid blue-
viol. gl. on c.p., band across E. floor, & EWBS, E. & NE wall".
N.B. The effect had vanished by 07:20UT. NASA catalog weight=4.
NASA catalog ID 646. The ALPO/BAA weight=2.
On 1975 Jul 29 at UT 00:00 Fraser (England, 6" reflector, x70) and
Howick (England, 3.5" reflector) observed the occultation of 51 Pisc.
at emersion - Fraser saw a flash or spike of liht which proceeded
emersion of primary by 0.4sec. The 9.0 mag companion appeared some
moments later. Howick at 1 km away, with 3.5" reflector noted nothing
unusual. Cameron says that no 3rd companion is known. The Cameron 1978
catalog ID=1411 and weight=2. The ALPO/BAA weight=1.
Aristarchus 1976 Aug 15 UT 23:00-23:45 Observed by Garbott (2)
(Bedfordshire, England, 10" reflector x500, seeing Antoniadi I)
and by Moore (Sussex, England, 15" reflector, x360, seeing
Antoniadi IV) "Noted blue color on N. wall extending toward
Herod. Also saw orange color in S. region. Confirmed by father.
(similar to many of Bartlett's rept's.), More noted nothing
unusual at 2320h." NASA catalog weight=4. NASA catalog ID #1444.
ALPO/BAA weight=2.