Aristarchus 1959 Mar 24 UT 04:35-05:15 Observed by Bartlett
(Baltimore, MD, USA, 4" reflector x180, S=3, T=5) "Strong blue &
blue-viol. gl. on E.wall, EWBS, SWBS with intermittent display.
At this time he noted in his 5-in L a total disappearance of
viol. gl. & reappear. 1 min. later. Altogether, found 4 such
occurences in his records, in '54, '57, ' & '59." NASA catalog
weight=4. NASA catalog ID #716. ALPO/BAA weight=2.
Kepler 1967 Oct 19 UTC 05:00 Observed by Classen (Pulnitz Obs. East
Germany, 8" reflector) and Corralitos Observatory (Organ Pass, NM, USA,
24" reflector + moonblink) "It was 1 mag brighter than aristarchus when
normally Aris. is 0.3mag. brighter than Kep. Corralitos MB did not
confirm." NASA catalog weight=4 (good). NASA catalogue ID #1052.
Aristarchus 1966 Oct 30 UTC 01:32-01:48 Observed by Bartlett
(Baltimore, MD, USA, 5" reflector x79, x142, x194, S=5, T=3) "S.region
of floor granulated & 6 deg bright light brownish tone; rest of crater
8deg bright white". NASA catalog weight=4 (good). NASA catalog ID #992.
On 1906 Feb 08 after a lunar eclipse, Frost and Stebbins determined
that Linne had enlarged by 1" in size.
In 1954 Jul 17 at UT06:50-07:15 Bartlett (Baltimore, MD, USA, S=
5, T=5-1) observed near Aristarchus: "Pale violet tint on
surface NE of crater, no color elsewhere". The Cameron 1978
catalog ID=568 and weight=4. The ALPO/BAA weight=1.
(Baltimore, MD, USA, 5" reflector x180) "Strong violet glare on
E. rim, changing to brown. At 0220 dark viol. in nimbus, at 0235
viol. changed to brown. At 0255 viol. suddenly reappeared, but
faded to invis. at 0300. Again at 0308 reapp. Only time he ever
saw such color changes." NASA catalog weight=4. NASA catalog ID
583. ALPO/BAA weight=3.
Plato 1938 May 17 UTC 08:00 Observed by Haas? (New Mexico?, USA,
12" reflector?) "Floor-least bit greenish (other colors on other
dates, e.g. Je 23, 7/22/37, & 7/15/38)." NASA catalog weight=3
(average). ALPO/BAA weight=2. NASA catalog ID #437.
Messier A 1951 Aug 20 UT 01:48-03:00 Observed by P.Moore
(England, 8.5" reflector, x350). Bright cloud like circular
patch seen on S wall of Messier A. It was the brightest object
in the vicinity. Observations ceased due to the Moon setting
behind a tree. W.Haas thinks that this effect is not unusual at
similar colongitudes. Moore checked again under similar
illumination and still considers the Aug 20 appearance abnormal.
NASA weight=4. NASA catalog ID #545. ALPO/BAA weight=2.
Furnerius A 1983 Jan 02 UT 00:10 H. Hill (UK)
observed that this crater was piercingly bright,
which he thought was a bit unusual. ALPO/BAA weight=1.
Cleomedes 1991 Dec 23 UTC 22:50 Observed by Mizon (Colehill,
Dorset, UK, 8" f/6 reflector x216) "Oval or pear-shaped ashy
glow visible for 2 min, then vanished quite suddenly" - Ref.
personal communication received by BAA Lunar Section.
Proclus 1973 Jan 21/22 UTC 23:57-00:25 Observed by Muller (located at
51.42N 8.75E) "Proclus much brighter than Cenorinus" 50mm refractor
used. Ref Hilbrecht & Kuveler (1984) Moon and Planets Vol 30 p53-61.
On 1979 Sep 09 at UT08:00-08:15 D. Darling (Sun Praire, WI, USA, 12.5"
reflector, x75 and photography used, seeing 4/10 and the Moon's
altitude was 45deg) photographed Romer crater and recorded two adjacent
bright cigar shaped objects - these were the same size as an
observation made in 1987. Darling believes that these are ridges.
Cameron comments that in LO-IV 192-3,2 a ridge is revealed on the
inside wall that matches the description. Cameron 2006 catalog ID=66
and weight=2. ALPO/BAA weight=1.
On 1982 Jul 09 at UT 01:05-01:25 P. Moore (Selsey, UK, 12.5"?
reflector, seeing III) found that Aristarchus was very bright
and slightly blue. Cameron comments that Moore's eyesight is not
very blue sensitive. The Cameron 2006 catalog ID=175 and weight=
4. The ALPO/BAA weight=2.
On 1982 Jul 09 at UT01:05-01:25 P. Moore (Selsey, UK, 12.5" reflector,
seeing=III) found that Grimaldi A was the 2nd brightest feature on the
Moon, and that there was colour detected with a Moon blink device on
the floor of Grimaldi. The Cameron 2006 catalog ID=175 and the weight=
4. The ALPO/BAA weight=3.
Aristarchus 1966 Nov 01 UTC 02:47-02:58 Observed by Bartlett
(Baltimore, MD, USA, 5" reflector, x283, S=6, T=4) "S.region of floor
granulated, 6 deg bright distinctly yellow-brown; rest of crater 8 deg
bright white". NASA catalog weight=4. NASA catalog ID 994.
On 2005 Oct 21 at UT 13:07-14:27 R. Gray (Winnemucca, NV, USA, 15cm F/9
refractor, x228, seeing 4-5, transparency 5-6) observed a possible TLP
in Macrobius. His report is as follows: "Blinked Macrobius with Wratten
Filters Blue 38A and Red 29. Macrobius became almost invisible through
the Blue 38A and essentially the same as in white light through the Red
29. The interior of the crater was completely in shadow. The only part
of the east wall that was visible was an apparent high point still in
the sun and seen as a bright point of light. This faded into darkness
before 13:56UT. No sign of any illumination of the east wall crater
interior or the interior of the west wall was seen during the
observation period. The outer west wall was a rough looking,
complicated mix of deep shadow and illuminated sunlit terrain." The
observer concluded that there was not a TLP - although he did get a
filter reaction, this may have been due to the different densities of
the filters? ALPO/BAA weight=2.
Macrobius 1898 Dec 31 UTC 20:00 Observed by Goodacre (Crouch End,
England, 12" reflector) "Interior nearly filled with shadow at sunset.
Inner E.wall very bright-a distinct penumbral fringe to black shad.
cast on it from W.wall. Seen best using high powers. (Firsoff & MBMW
give date as just 1895 but must be wrong-phase - see app.ref.)"
NASA catalog weight=4 and catalog ID #304. ALPO/BAA weight=2.
On 1989 Aug 20 at UT13:55 M. Lucas (Melbourne, Australia, naked eye)
witnessed a "pin-point flash" in the middle of the lower right quadrant
of the Full Moon. Foley suspects that this was in the Proclus region?
The Cameron 2006 catalog ID=374 and the weight=2. The ALPO/BAA
weight=2.
Aristarchus 1969 Sep 30 UT 04:46-05:10 Observed by Maley, Saulietis
(Houston, TX, USA, 16" reflector, x130) "Intermittent blue color on SE
wall, verified by others. At 0500h, taking 10s to reach max. then
slowly disappeared. Gap appeared after 1st event. Drawing." NASA
catalog weight=4. NASA catalog ID #1202. ALPO/BAA weight=4.
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.
On 1987 Oct 13 at UT14:00-17:00 J. Moeller (Kirkville, NY, USA,
6" reflector) observe and 10x70 binoculars) noted that
Aristarchus was brilliant in the sky and the most striking
feature on the lunar surface (2-3x brighter than Tycho). It
appeared as a hazy white cloud at first. The effect lasted for 3
hours. The Cameron 2006 catalog ID=309 and the weight=1. The
ALPO/BAA weight=1.
On 1991 Dec 28 at UT 02:10 P. Moore (Selsey, UK) could see no detail on
the floor of Plato crater. This report needs to be read in context with
the comments by Cameron for A.C. Cook's observation of the floor of
Plato on 1992 Jan 18 - Cameron 2006 catalog ID=438.
On 1974 Jun 12 at UT0256 an unknown observer noted a dark blob on the
northern edge of the floor of Pitatus crater.
On 1916 Jan 27 at 22:00? Markov (Russia) noticed that a light sector
was visible at the bottom of Plato, in shadow, and contained 3 bright
spots, reminiscent of phfescent bodies. The Cmaeron 1978 catalog ID=362
and weight=3. The ALPO/BAA weight=3.
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.
Briggs A 1980 Feb 11 UT 06:30-07:00 Observed bt Butler_FC
(Brixton, UK, 22cm Newtonian reflector, x64, x104, seeing IV).
Found Briggs A to be brownish in colour at x64, however the
colour vanished at 06:55 when x104 was used. Switching back to
x64 the colour was still there but fainter. The colour fade may
have been due to day light glare encroaching? Could not see this
effect anywhere else on the Moon but did detect what he regarded
as a permanent coloured spot (yellow) between Cruger and
Grimaldi. ALPO/BAA weight=1.
Aristarchus 1976 Oct 18 UT 07:42 Observed by Bartlett (Baltimore, MD,
USA, 4.5" reflector and 3" refractor, S=3, T=5) "Inner E. wall 6 deg
with very large EWBS at 8deg. No viol. color anywhere & floor was gray
at 4 deg (very low). C.p. is only 8 deg. At base of c.p. between peak &
advancing shadow a very faint but definite red glow was seen. It was
also seen later in the 3" refr. Was confined to W.base of peak & no
color on E. base tho. carefully searched for. This red glow was unique
in his experience of 28 yrs. His obs. thru. col. 223deg saw nothing
more unusual." Cameron 1978 catalog weight=4 and ID #1455.
Elger 1970 Aug 22 UTC 02:35-02:43 Observed by Merosi (Pecs?, Hungary,
6" reflector x150). "Brightening in dark beyond term., 3deg size, 1.5x
size of Elger. Not variable for 5 min. but decreased & became in-vis.
after 0243h. No high peaks there." NASA catalog weight=3 (average).
NASa catalog ID #1275.
On 1964 Jun 28 at UT 08:20-09:10 Schmidling, St Clair, and Platt
(Riverdale, New York, USA, 8" reflector, x256) observed in the
Aristarchus, Herodotus, Schroter's valley area: two red spot glows,
glimmer, looked like ruby gems. Cameron says that the date was
predicted by Greenacre and looked for. The Cameron 1978 catalog ID=817
and weight=5. The ALPO/BAA weight=4.