On 1980 Apr 18 at UT 19:00-22:30 P. Madej (Huddersfield, UK) saw two
very bright flashes on the eastern edge of Littrow, spaced 40 seconds
apart. Ricketts observed blue flashes approximately 20-30 sec apart and
Foley saw faint blue. Cameron 2006 catalog ID=86 and weight=5. ALPO/BAA
weight=3.
On 1968 Dec 23 at UT 08:40-08:45 Osawa (Kyoto-Ken, Japan, 8"
reflector, x167 and x212, S=3-4, saw Taruntius crater (and a
wrinkle ridge) to be bright through a red filter. Cameron
mentions that this was during the Apollo 8 watch. The Cameron
1978 catalog ID=1108 and weight=3? The ALPO/BAA weight=2.
Aristarchus 1971 Oct 22 UT 19:43-19:56 A.Mackay (Hatton, UK, 15cm
reflector, x50) observed a pale pink on the W(IAU?) half of
Aristarchus and a pale shade of blue on the E(IAU?) half. The
effect faded from 19:56UT onwards and had gone 2 minutes later.
No information on whether other craters exhibited this effect,
given. Burgess, who observed later did not see any colour.
ALPO/BAA weight=1.
On 1880 Nov 06 at UT 20:00 an unknown observer observed a TLP at an
unknown location on the Moon. The Cameron catalog has an entry for this
date and time but does not specify the location, the observer or what
was seen. The Cameron 1978 catalog ID=218 and the weight=0. The
ALPO/BAA weight=1.
On 1981 Jun 07 at UT02:30-03:00 B. Hobdell (St Petersberg, FL, USA,
10" and 4" reflectors, seeing=I) at 02:30UT saw a flash from
Aristarchus and another one from Schroter's valley. By 02:45UT
Aristarchus was starting to be difficult to see and had occasionally a
bluish cast. By 03:00UT the crater could only barely be seen. This was
odd because visibility on the Earthlit side was really rather good. The
Cameron 2006 catalog ID=143 and weight=0. The ALPO/BAA weight=1.
On 1981 Jun 07 at UT02:30-03:00 B. Hobdell (St Peterberg, FL, USA, 10
and 4" reflectors, seeing=1) saw Copernicus to be very bright in blue.
Clarty of Earthsine was exceptional tonight. The Cameron 2006 catalog
ID=143 and weight=0. The ALPO/BAA weight=1.
1837Mar11 UT 15:27 (20:48 local time) T.G. Taylor (Madras,
India) whilst observing a star being occulted, noticed a
6th magnitude nebulous spot where Aristarchus should be. Had
never seen anything quite as bright as this on previous
occasions (except the day before). ALPO/BAA weight=2.
Atlas 1968 Dec 24 at UT 09:15-10:45 Osawa (Kyoto-Ken, Japan, 8"
reflector, 9mm Ortho, Seeing=5, later worse) saw a slight
brownish hue on the northern shadowy bed in the crater. It was
difficult to see the difference between the glow and chromatic
aberation of the eyepiece. The tint never showed up in filters.
The ALPO/BAA weight=1.
On 1980 Apr 19 at UT 20:37-20:49) P. Madej (Huddersfield, UK,
77mm refractor, x83 and x111) at 20:37 UT saw a slight glow at
x83, quite small in size. At 20:46UT no glow was seen at x83.
At 20:49 a slight glow seen again, but unclear and
illdefined - appeared larger in area at x111. Observatons
ceased at 21:56 dues to clid. ALPO/BAA weight=1.
On 1980 Apr 19 at UT20:30-22:59. The following is quoted from the
Cameron 2006 catalog.... "(Buczynski) alerted by colleague (Greenwood)
who used filters W15 (IR), W25 (red), W44A (blue), & W58 (UV) and had
located a possible blink in it. (Bucz) used W15, W44A & W25. C.P was
very bright in W25 (red), dull but vis. In W44A (blue) & floor was
noticibly darker in W44A than in W25. Bright cp vis. In W15 & floor was
of a light shade. Other craters checked for color, none found. In 44A
floor lost some definition (gas?). Sketches from Bucz. & Greenwood.
(Pedler) at 2140, floor area around cp was seen in white & red as
normal but blink was vis in white, darker in blue. Checks of other
features were negative. (Amery) small dark center & small dark area -
not shadow - under S wall. N wall obscured by dark area extending N
onto surrounding mare. (normal?) which was difficult to focus (gas?).
At 2155 N wall now sharper & dark area less intense. Craterlet Cameron
in N wall clearly seen which was invisible 1/2 h earlier. (Saxton)
whole crater flashed and blinked at 2155. Could see detail in brighter
W 1/2 of crater - not seen earlier. At 2205 seeing poor, at 2215 it was
normal. (Blair) at 2155 used red & blue filters & in blue it was darker
than in red. W. wall not well defined. (J. Cook) saw spurious color on
N & S rims. Saw a pink tinge on SE rim. (A. Cook) saw spur. Color on
most craters as seeing deteriorated. Got a blink on SE region > red
than blue". The Cameron 2006 catalog ID=87 and the weight=5. The
ALPO/BAA weight=3.
In 1879 Oct 20 UT 23:00 (Local time Oct 21 9AM) Hirst (Blue Mountains,
NSW, Australia) saw a large part of the Moon covered with a dark shadow
that was as dark as the Earth's shadow would have been if there had
been an eclipse. Cameron says that this is a confirmed observation.
Note that the Moon was just before first quarter. The Cameron 1978
catalog ID=215 and the weight=4. The ALPO/BAA weight=3.
On 1981 Jun 08 at UT01:48-02:45 B. Hobdell (St Petersberg, FL, USA, 10
and 4" reflectors) could hardly see Aristarchus crater, however at
01:48UT it brightened in blue for about 3 minutes. Then at 02:20UT
there was a bright flash, and by 02:25UT the crater was very bright,
but by 02:45UT it was no longer visible. Cameron 2006 catalog ID=144
and weight=0. The ALPO/BAA weight=1.
On 1988 Nov 14 at UT 17:25-18:30 H. Miles (St. Minver,
Cornwall, England, UK, 5"refractor? x60 and x120) found
Aristarchus to be a white ill-defined circular patch. At
17:45UT it was a lot brighter (Cameron comments that this
might have something to do with sky darkness). In contrast,
Copernicus was just seen as a white patch and the Jura
mountains could be seen (not as bright). Aristarchus grew
brighter over time and there was a bright point on the west
wall (seen at x60 and x120). Īt was fainter at 1854 & < At
1830. (Foley) said Earthshine cond. Superb with many regions
clearly seen, but Aris. was dull. (Cooks) in hazy condition
could not detect Aris." The Cameron 2006 catalog ID=338 and
weight=0. The ALPO weight=1.
On 1980 Apr 20 at UT 19:25-23:43 P.W. Foley (Kent, UK, 10" reflector,
seeing II-III) found that Aristarchus was very bright in Earthshine
(also found on the photographs that he took), giving off a blue
"incadescence", the CED brightness reading was 5. Occasionally Foley
could see a star-like point in the south east corner. For comparison in
brightness he used highland terrain near to Grimaldi (CED=2). By
comparison, Buczynski and Lord, could not see Aristarchus. Earlier,
Geenwood saw the crater easily as a star-like point with a diffuse
exterior glow. Cameron says thyat this was confirmed by Buczynski and
Lord (?). At 20:35UT Amery decided that Aristarchus looked brighter
than normal. Pedler though described the crater as "small dim nebulous
blue or blue-green" that was invisible by 20:27UT. At 20:28-22:01 Blair
could not detect Aristarchus, nor could J-H Robinson at 20:40UT though
he did see it at 20:55UT as both diffuse and blue. Ricketts detected a
blow glow with irregularly spaced flashes of roughly 5-10 sec apart.
Cook's at Frimley, UK, saw no features in Earthshine. Cameron 2006
catalog ID=88 and weight=4. ALPO/BAA weight=2.
On 1969 Nov 15 at UT 02:20-03:20 Lagunas (Santiago, Chile, 10"
reflector) observed some brightenings in Aristarchus during the Apollo
12 watch. The Cameron 1978 catalog ID=1209 and weight=0. The ALPO/BAA
weight=1.
On 1980 Apr 20 at UT 19:45-22:45 M.C.Cook (Frimley, UK) - colour
(probably spurious) seen on Piccolomini. Cameron 2006 catalog ID=88 and
weight=4. ALPO/BAA weight=1.
On 1980 Apr 20 at UT20:05-21:02 J.D. Cook (Frimley, UK, 12" reflector,
x60, seeing III-IV) at the start of this session found some bright
spots in the area of Copernicus, and at 21:02 detected some flashes in
this region. Cameron 2006 catalog ID=88 and weight=1. ALPO/BAA
weight=1.
On 1980 Apr 20 at UT20:27 M.Price (Camberley, UK) saw a flash in the
Grimaldi-Aristarchus area. Cameron 2006 catalog TLP ID=88 and weight=4.
ALPO/BAA weight=2.
On 1980 Apr 20 at UT21:12-22:45 J-H Robinson (Teignmouth, UK, 10.5"
reflector, x180) found, using a Moon Blink device, evidence of colour
on the flor patches of Fracastorius crater, brighter in blue than in
red. Also the floor to center varied in brightness in blue and in red.
Peters observed in white light and found the south east-south wall had
a slight orange cast and when a Moon blink was used it was less bright
in blue than in red light. M. Cook found spurious colour on the south
rim and also on Mons Pico. There was a colour blink reaction on the
southeast floor of Fracastorius - this was both faint and blurred and
not seen in white light. A.C Cook detected the permanent blink in the
south east floor of the crater at 21:47 and a fainter one in the north
west (marginally brighter in red than in blue). J.D. Cook found no
colour with the Moon blink device. 21:22-22:10 P.W. Foley got a strong
colour reaction with the Moon Blink device - brighter in red than in
blue and detected a pink colour visually on the south east wall 22:10-
22:45 (this did not give a blink effect though). Cameron 2006 catalog
ID=88 and weight=4. ALPO/BAA weight=2.
White spot near Censorinus 1966 Dec 18 UT 23:40-23:46 Observed by Enie
(Pittsburgh, Pennsylvania, USA, 8" reflector x100, S=G) "Attention
drawn to pink color in this usually white patch. Brightened to a light
reddish tinge for 2 mins, then faded back to pink, then to white,
Sketch." NASA catalog weight=4 (high). NASA catalog ID #1002.
Apianus D On 2011 Oct 03 UT 21:00-21:20 F. Power (Meath,
Ireland, 11" SCT) observed changing colours (blue, white, and
red) on the inner western rim of this crater. He changed
eyepieces and moved the scope around to look at dufferent parts
of the Moon, but nowhere else exhibited anything similar. As
another test he asked his wife to have a look without telling
her what he was seeing. She confirmed the same effect. 5 digital
camera images had been taken. Most of these were out of focus
and the first one was saturated, however one of them showed a
approximately 35 km long, by 11 km wide (at the north) lopsided
carrot shaped orange colour to the western rim of Apianus D. No
similar strong colour could be seen anywhere else on the image,
nor on the other 4 images. This TLP is being given an ALPO/BAA
weight of 1 as the Moon was low, but an image taken looks
interesting.
On 1988 Nov 15 UT 19:15 Holmes (Rockdale, UK, 215mm Newtonian) noticed
the Censorinus apron (just east of the crater and including the rim)
was fuzzy but the crater was clear - a sketch was provided. A BAA Lunar
Section observation.Cameron 2006 Catalog Extension ID=339 and weight=3.
ALPO/BAA weight=3.
On 2001 Apr 29 at UT 20:50 R. Braga (Italy) reported that without any
filter, the brightness of the east wall of Torricelli B was halfway
Torricelli C (faintest) and Moltke (brightest). By insering a Wratten
25 red filter though, the crater was slightly more evident. However
using a blue Wratten 39A filter, the crater vanished completely, whilst
Toricelli C remained. The ALPO/BAA weight=3.
On 1983 Mar 21 at UT 21:05-22:00 P. Horne and J. Horne (Hertz, England,
UK, 11" reflector, x180 and x330) found that Mons Piton (totally
illuminated and brightest feature on the Moon - but no variability) was
brighter than Aristarchus (would have been if it had been in sunlight)
and the mountain was contained within a circular illuminated patch.
"Brilliant white and no shadow. Size ~16km." There was no details
visible but the adjacent features had distinct shadows. Hutton was also
observing. Foley examined the photographs and believes that they are
inconclusive. D. Mansbridge was photographing the Moon at 19:30UT and
detects Piton but it is not bright. However in a photograph taken by D.
Mansbrdige and 20:30UT the mountain is much brighter than any other
sunward facing slopses on the northern part of the Moon's terminator.
R. Mosley had been observing earlier at 18:10-19:40 and although
finding the mountain to be shining briliantly beyond the terminator, he
also comments that this is normal. Cameron though has seen the
photographs taken and thinks it might be a real TLP. The Cameron 2006
catalog ID=208 and weight=5. The ALPO/BAA weight=2.
On 1988 Nov 16 at UT 18:20 M.C. Cook (Frimley, UK) observed that a ray
north east of censorinus appeared to be very diffuse and this did not
change during the observation. This was odd because proclus ray
material remained clear. The apron material of Censorinus was diffuse
E-W and the northern part was dull, but not fuzzy. The Cameron 2006
catalog ID=340 and the weight=3. The ALPO/BAA weight=2.
On 1988 Nov 16 at UT 18:20 M.C. Cook (Frimley, UK) observed that
Torricelli B changed in brightness (at times), but thinks that this was
due to atmospheric transparency. The Cameron 2006 catalog ID=340 and
the weight=3. The ALPO/BAA weight=1.
Near Ross D (24E, 11N) 1964 Mar 21 UT 05:00-06:20 Observed by
Harris, Crow, Cross (Whittier, CA, USA) - negative confirmation
from Las Cruces. NASA catalog weight=0 (unreliable). NASA catalog
ID #805. ALPO/BAA weight=1.
On 1984 Apr 08 UT 19:50 Mobberley (14" reflector, x194, seeing
III-IV, Transparency Fair-Poor, Cockfield, UK) found that
Torricelli B's shadow was 1/2 the way across the floor, which
was normal, but that there was a very dar grey/brown shroud
around the carter, out to several radii.
The ALPO/BAA weight=1.
On 1980 Apr 22 at UT20:30 R.Rohslberger (Hittfield, (near Hamburg) West
Germany, 8" reflector, x170 25mm occular used, 300mm focal length?)
took some photographs using projection. One of these recorded an
apparent "ejecta curtain". Cameron considered lens flare, but the other
photographs did not show this. If real then the plume was at a height
of ~40km and the ray was ~130km. Cameron concludes that this was an
impact photograph. The Cameron 2006 catalog ID=90 and the weight=5. The
ALPO/BAA weight=3.
Alphonsus 1952 Nov 24 UT 18:00 A.P. Lenham (Swindon, UK, 3-
inch efractor x120) noted that the usual dark spots were not
visible, but floor ridges and craterlets were surperbly seen.
This may not be a TLP but has been given a TLP category as it
is a curious appearance and needs to be verified on a repeat
repeat illumination apeparance. ALPO/BAA weight=1.
On 1987 Jan 07 at UT19:10-20:30 H.Miles of Cornwall, UK saw two bright
patches were seen in Earthshine at clock positions of 4 (this patch was
defined by the dark limb and the brightness faded inwards to the disk,
over a short distance. "Centred at 60 deg along the limb from the north
- a sketch showed approximately 10-15 deg along it") and 5:30 (this
second patch was smaller and not so bright as the first patch - it was
west of the north pole. P. Foley (Kent, UK) also detcted the patches
and said that one was not far from the sunrise terminator.
The Cameron 2006 Extension catalog gives this TLP an ID of 291 and a
weight of 2. The ALPO/BAA weight=2.
Plato 1789 Jul 30 UTC 21:00? Observed by Schroter (Lilienthal, Germany)
NASA Catalog Event #61, NASA Weight=2 (slightly low) Event described
as: "Soon after sunrise saw a kind of fermentation on the floor which
clearly resembled a kind of twilight, (due to some kind of aberration
unknown to the observer?)" For further details see reference:
Middlehurst, B.M., Burley, J.M., Moore, P.A. and Welther, B.L., 1968,
NASA TR R-277.
Sulpicius Gallus 1867 Jun 10 UT 22:00? Observed by Dawes
(England?) "3 distinct roundish black spots. Absent on 13th"
NASA catalog weight=3. NASA catalog ID #184. ALPO/BAA
weight=1.
On 1969 Nov 18 at UT 00:30-02:30 W. Cameron (Greenbelt, MD, USA, 12"
reflector, x80 and x320) using a low power eyepiece, observed that
bright craters (but not all of them) "glittered like diamonds". These
craters were several on the terminator, Proclus, Censorinus, Manillius,
Menelaus and Dionysius. The glitter effect was on the west wall crest
-- like stars. Higher power revealed these areas to be bright but not
star-like (nor glittering). The Cameron 1978 catalog ID=1212 and the
weight=1. The ALPO/BAA weight=1.
Eratosthenes 1976 Aug 04 UTC 02:07 Observed by Bartlett (Baltimore, MD,
USA, S=6, T=3, 4.5" reflector 40-450x) "faint spot of light 4 deg
bright seen in shadow on pos. of c.p. which is normally invis. At base
of inner NW wall a faint bluish radiance (gas?) was observed". NASA
catalog weight=4 (high). NASA catalog ID #1439.
Sulpicius Gallus M 2022 Dec 31 UT 17:00-18:00 F Taccogna
(UAI - Italy) imaged this area and recorded this crater as
extremely and unusually bright (compared to other features).
A. Amorin (Brazil) observing a few hours later commented that
the crater was brighter than it was in the Hatfield Atlas
plates. However analysis of past imagery of this area under
similar illumination (albeit with the crater on the edge of
the image or at lower resolution) also shows a similar
brilliance. One more image confirming this will be enought to
remove it from a ALPO/BAA weight of 1.
Eratosthenes 1952 Nov 25 UT 16:30 A.P. Lenham (Swindon, UK, 3-
inch refractor x150, Definition Good) noted that there was
faint/slightly bright detail inside the interior shadow -
observer comments "presumably peaks of central mountains & W.
Wall ridge, but very faint" - however this is worth checking
out. ALPO/BAA weight=1.
On 2009 Nov 25 UT18:42-21:03 P.Abel, T.Little and C.North (Selsey, UK,
15" reflector, seeing II-III, transparency very good), all saw visually
a brownish tinge on the north west rim of Eratosthenes crater. P.Abel
made a sketch and T.Little took some high resolution CCD images, some
of which were through coloured filters. Checks were made for spurious
colour, but none was seen elsewhere on the Moon. The eyepiece was
changed but this made no difference. M.C.Cook (Mundesley) was observing
with a smaller scope at the same time, but saw no colour, however
observing conditions were worse. W.Leatherbarrow (Sheffield, UK) was
observing with a instrumenet mid way in size, and saw a brownish tinge
in the NW rim area, but saw a similar colour elsewhere and put this
down to spurious colour. Normally multiple observers seeing the same
thing would result in a weight of 4, however as this was only observers
at Selsey and some of the evidence contradicts, I am allocating an
ALPO/BAA weight=3.
Pallas-Schroter 1953 Nov 13 UTC 02:00 Observed by L.Stuart (USA)
"Saw and photographed a bright spot on term. between these two
craters. Used Kodak 103aF3." NASA catalog weight=5 and catalog
ID #559. ALPO/BAA weight=5.
On 2012 Aug 25 UT1944-1952 Eratosthenes crater was imaged by C.
Galdies (Malta,Nexstar 8SE, Philips SPC 900NC camera). 4
Registaxed images were produced covering 19:45, 19:48, 19:49,
and 19:51. All but the first image, once first order spurious
colour had been removed, showed orange on the shaded terraces on
the western illuminated rim (similar to what Paul Abel and
others saw in 2009, albeit just confined to the NW rim), and the
interior floor shadow was slightly smaller in red light. However
orange colour was also seen on the eastern side of mountains to
the south of the crater, which infers that the spurios colour
removal did not fully acomplish its main goal. The effects were
not caused by the registax software as the orange colour is
visible on individual images. Although probably the colour is
not lunar in orgin, its explanation is not fully explaianed,
therfore an ALPO/BAA weight of 1 is used for now.
On 1969 Nov 18 at UT 04:22 Loocks (Valparaiso, Chile, 12" reflector)
observed a flash of light of magnitude 12. Cameron speculates a meteor
and mentions the apollo 12 watch. The Cameron 1978 catalog ID=1214 and
weight=1. The ALPO/BAA weight=1.
North (?) (left) Cusp 1912 Jan 28 UT 00:00 (27th 20:00 L.T.) Observed
by Harris (Philadelphia? Pennsylvania?, naked eye?): Intensely black
curved object 400x240km, shaped like a "crow". Cameron 1978 weight=1
(very low) and ID=334. ALPO/BAA weight=1.
Eratosthenes: On 2017 May 04 UT 21:50-22:10 N. Longshaw (BAA,
UK, 78mm APO refractor, x125 & x175, seeing II-III,
transparency Good). A brownish (orange) tint was seen on the
inner NW wall light terraces - this was immediately obvious
when first looking at the crater, but as time progressed the
effect became less bright. Other craters were checked for
similar coloured tints, but none were seen elsewhere on the
Moon. UAI observers in Italy (F. Taggogna & A. Tonon) had been
imaging the region in colour 17:57-21:47, but their images do
not show any colour on the inner NW rim terraces, the their
last image is 3 min before Longshaw saw the colour. The
ALPO/BAA weight=2.
Eratosthenes 1947 Jan 30 Mean Col. 16deg. Observed by Hill (UK) "Main
peak of massive central mountain group appeared to be in a shadowless
having regard to it's claimed height of 6,600 ft. The whole of the
floor to the west should have still been in darkness. Instead
immediately to the west was a dark (intensity 1.5-2) region extending
almost to the foot of the bright inner wall and very diffuse in
outline. The observation could not be followed through due to
increasing cloud, but on the following night all was normal."
Aristillus 1939 Jul 26 UT 02:30 Observed by Haas? (NM?, USA, 12?"
reflector) "Dark area to W. part of floor was I=3.7. (see #450, 459 &
461). Used diff. telescopes but can not explain difference)" NASA
catalog weight=4 (good). NASA catalog ID #454.
Plato 1970 Dec 07/08 UT 23:30-00:45 UT Observed by Fitton (Oldham,
England, 8.5" refkector, x200, S=G) "Floor blank, yet some craters
should be vis. Outer wall craters showed clearly. (similar to
Bartlett's obs on Nov. 8th, #1278" NASA catalog weight=3 (average).
NASA catalog ID #1279.
On 1936 Oct 25 at 01:35 UT W. Haas (Alliance, OH, USA, 12"
reflector) saw small bright spots on the floor of Eratosthenes,
(Pickering's atlas 9A, col. 30deg, shows no spots - according to
Cameron). Cameron 1978 catalog TLP=417 and weight=4. ALPO/BAA
weight=1.
Copernicus 1966 Mar 01-02 UT 22:06-09:45 Observed by Lovell (Auburn,
OH, 4" refractor, x120m S=E, T=3.5) "As sun rose higher, west (ast.?)
outer wall was bathed in a soft viol. color -- not in evidence on flat
ground below the wall" NASA catalog weight=3, NASA catalog ID #922.
Alphonsus 1969 Nov 19 UT 03:30 Observed by Argus/Astronet (CA?, USA)
Brightening in W. rim & S. central floor, seen by 2 obs. (Apollo 12
watch)" NASA catalog weight 3 (average). NASA catalog ID #1219.
Plato 2005 Dec 10 UT 20:46 Observed by Brook (Plymouth, UK, 4"
refractor. Conditions excellent with the Moon at a high altitude) "2
second duration white flash seen on the floor of the crater" - BAA
Lunar Section Report.
Daniell 1979 Jun 05 UT 20:15-21:10 Observed by Price (Camberley,
England, 152mm reflector x64 and x128, seeing III, transparency good)
"Obscuration seen" BAA Lunar Section report.
Daniell 1979 Jun 05 UT 20:15-23:00 Observed by Price (Camberley,
England, 152mm reflector x64 and x128, seeing III, transparency good)
observed that Posidonius lacked sharpness.
U.K. observers: G. North and P. Foley, both saw a wisp of blue
associated with this crater. Cameron 2006 catalog extension ID=209 and
weight=4. ALPO/BAA weight=3.
Ramsden 1999 May 25 UT 20:57-21:22 Observed by Brook
(Plymouth, UK, 4" refractor, x216, seeing II-III) "Bright spot
on W wall - brightness variation seen. - At the start it was
bright, then it faded, and towards the end of the observation
it was starting to brighten again". BAA Lunar Section
observation. ALPO/BAA weight=1.
Bullialdus 1979 Jun 05 UT 22:00-23:00 Observed by Cook M.C.
and J.D. (Frimley, UK, 12-inch reflector, Seeing III-IV, good
transparency). MC Cook observed internittently over this time
period (due to cloud) and found the crater sharper in a blue
filter than in a red filter. No obscuration seen apart from a
darkish patch on the SW rim and spreading over onto an area
surrounding the rim, which she took to be shadow, though the
main shadow was along the east rim of the crater. JD. Cook
observed an orange colouration seen on eastern and the cleft
on the SW rim. Dark area seen on southern floor of crater,
south of central peak. ALPO/BAA weight=1.
On 1981 Apr 15 at UT06:27-06:40 D. Louderback (South Bend, WA, USA
using a 3" refractor x134 and S=4.5-5 and T=5-0) saw a bright spot on
the western wall of Eimmart (sketch supplied) have an unusual
brightening and shade. Variations occurred over 2-3 minute intervals.
Louderback commented that the spot looked like a flare with its apex
located at the crater wall and there was some blurring effect on the
spot - it decreased in size during the phenomenon. Seeing worsened
later. Apparently on the 18th and 19th of April everything was back to
normal. Cameron comments that there is no bright spot on the Moon at
this location. Lunar Orbiter IV plates 192-3.2 shows evening
conditions. Cameron 2006 Catalog Extension TLP ID=130 and weight=3.
ALPO/BAA weright=3.
Alphonsus 1969 Nov 20 05:27 (UT)? Observed by Argus/Astronet (San
Diego, Sacramento, CA, USA) "Brightening in crater. (San Diego &
Sacramento obs. confirmed, but astronauts did not see anything. Apollo
12 watch)." NASA catalog weight=3 (average). NASA catalog ID #1222.
Gassendi 1971 Oct 29 UT 22:15-22:50 observed by J.Coates and
A.R. Neville (Burnley, UK, 6" reflectir, x192, slight fog,
seeing jumpy but good at times). An in ititial Moonblink
search proved negative. However white light observations by
Coates revealed a golden brown colour between the black
interior shadow and the base of the (bright W (IAU?) wall).
Neville confirmed its appearance as a coppery hue and saw the
colour for 5 minutes before it vanished at 22:55UT. ALPO/BAA
weight=2
Gassendi 1967 Jan 21 UT 19:36-20:24 Observed initially by
Moore & Moseley (Armagh, N.Ireland, 10" refractor, x360, S=G),
Ringsdore (England, 10" reflector), Sartory (Farnham, England,
15" reflector?), Duckworth (England), Kilburn (Ashton,
England, 6" reflector), Farrant (England, 8" reflector) "Eng.
moon blink at 1936 (no events from 1750-1815h) outside SE
wall, brighter at 1939h, seen vis. at 1940h, faint at 1946h.
Moved NW at 1950h. At 2000h, Moseley saw it farther W., lost
it at 2008h. Seen again at 2026h further toward group of
hills. Moore saw it faint at 2002h, lost it at 2005h, vis. &
blink at 2007h. Checks again at 2010-50h, 2130-50, 2200-20,
2250-2300, 2325-0000h.Duckworth suspected blink in S.Iridium
nr. Bianchini later, but clouds intervened, after clearing
couldn't see it. Neg. obs. in 11 other features, inc.
Alphonsus & Plato. Confirmed Gass blink 2018-2024h" NASA
catalog weight=5. NASA catalog ID #1010. ALPO/BAA weight=4.
Barker's Quadrangle (Capuanus) 26W, 34S 1949 Feb 9 UT 20:00?
Observed by Moore (England, 12" reflector) :Quadrangle not seen,
apparently misty. (quad. in Capuanus? see Wilkins & Moore, The
Moon, p124)" NASA catalog ID=514, weight=4. ALPO/BAA weight=3..
M. Cook of Frimley, UK, noticed Torricelli B to have a blue
tinge inside and outside. No colour had been noticed earlier
on 19-21 Mar. Cameron reports also in her catalog that the halo
around Torricelli B had lost its brilliance as seen on 29th Mar.
Cameron 2006 catalog extension ID=210 and weight=5 - apparently being
confirmed by Marshall, Mobberley and Foley. ALPO/BAA weight=3.
Torricelli B 2005 Jan 22 UT 01:00 Observed by Serio (Houston, TX, USA,
6" Cassegrain, x150 and x180, Seeing 3, high deck of Cirrus clouds)
"Torricelli B hard to make out in the videos taken, but images taken
through cloud. A check on the image received by the coordinator shows
that Torricelli B is in fact visible, but perhaps not very bright. A
later observational sequence of images by Raul Salvo (Montevideo,
Uraguay UT 03:15-03:23) showed similarly that Torricelli B was dark,
and there was some brightness variability although the
background setting on these was low" An ALPO report.
At 03:30UT observer noticed a hint of yellow colour
on the floor of the crater and by 03:57UT the south
east and central parts of the floor and the circular
feature on the south west floor had turned a deep
yellow colour. The rest of the crater remained colourless.
Other craters also remained colourless. By 04:05UT the colour
was fading and by 04:15UT it was gone. Maurice Collins
in New Zealand took some low resolution colour images about
4 hours later but these failed to show any yellow colour.
Zac Pujic obtained colour images at a different time of
natural surface colour on the Moon and finds that Bullialdus
does actually have a natural yellow cast to most of the floor.
However this does not explain the variability in colour strength
seen by Robin Gray. ALPO/BAA weight=3.
Observed by Firsoff (Somerset, England, 6.5" reflector? x240) "Red
glow." NASA catalog weight=4 (high). NASA catalog ID #573.
On 1987 Jan 11 at UT 18:15-23:00 P. Grego (Birmingham, UK, 6"
reflector, seeing=III) sketched Aristarchus crater and saw two
luminous circular patches on the exterior west wall - these
were less bright than the inner wall but brighter than the
outer wall. The Cameron 1978 catalog ID=292 and weight=5.
ALPO/BAA weight=2.
On 1987 Jan 11 at UT P. Moore (Sussex, UK) found the the floor of Plato
was much more drk than the adjacent Mare Imbrium. Furthemore there was
a blurring of detail over the northeast wall and onto the nearby floor.
detail elsewhere in the crater was OK. By 23:00UT there was less lack
of detail effects. M. Cook (Frimley, UK) at 21:55UT noted the obscured
area but decided that it was narrower than the same effect one month
ago and suspected that she may have been observing towards the end of
this TLP. The effect gradually dimmed between 21:55 and 22:45UT. Other
craters were normal. G. North was affected by poor seeing conditions.
Davies detected a slight obscurtion on the north east corner - it was a
misty gray feature at x200. The Cameron 2006 catalog extension ID was
292 and the weight was 5. Tha ALPO/BAA weight was 4.
Cobra Head 1949 Feb 10 UT 00:00? Observed by Thorton (Northwich,
England, 18" reflector) "I was examining the Cobra Head of the Schroter
Valley, when I noticed what seemed to be a diffuseed patch of thin
smoke or vapour, apparently originating from the valley on the E. Side
where the landslip is, and spread over the edge on to the plain for a
short distance. Every detail of the edge of the valley was perfectly
clear and distinct except where this patch occurred, but there the
definition was poor and very blurred" NASA catalog
weight=4 and catalog ID #515. ALPO/BAA weight=1.
On 1889 May 11 at 22:00? UT an unknown observer saw an ink black spot
on the rampart of Gassendi. It had not been seen before ar at the next
lunation or indeed ever again. Cameron 1978 catalog ID=261 and
weight=3. ALPO/BAA weight=2.
Bullialdus 1974 Sep 27 UT 22:45-23:40 Observed by Findlay, Ford
(Dundee, Scotland, 10" refractor, 150x, 180x, filters) "Saw yellowish-
orange color in crater. After clouds passed at 2300h color still there
& gave a slight blink which no other craters did. Not seen in red
filter, dark in blue. Ford saw it along ridge fr. c.p. to SW wall.
Alert did not bring confirm. as clouds intervened for all others." NASA
catalog weight=4. NASA catalog ID #1394. ALPO/BAA weight=3.
Torricelli B 2005 Jan 22 UT 03:15-03:23 Observed by Raul Salvo
(Montevideo, Uraguay UT 03:15-03:23) showed that Torricelli B
was dark, and there was some brightness variability although the
background setting on these images was low and seeing could
account for the brightness variation? An ALPO report.
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.
Schroter's Valley 1955 Aug 29 UT 19:45 Observed by Firsoff (Somerset,
England, 6.5" reflector x200, S=P-F) "Valley almost completely
invisible in blue" NASA catalog weight=4 (high). NASA catalog ID #605.
Hobdell, of St Petersburg, FL, USA, using a 2"? refractor?
and Seeing=I-II, saw a bright region on the north west wall
that seemed to change in brightness. In truth, there were
other features elsewhere on the Moon that also fluctuated,
but not as much as Aristarchus was. No colour was noticed.
Cameron suspects fluctuations in our own atmosphere.
Cameron 2006 extension catalog ID 131 and weight=1. ALPO/BAA
weight=1.
Aristarchus 1976 Sep 05/06 UT 18:45-01:35 Observed by Prout
(England?, 12" reflector, S=III-II), Foley (England, 12"
reflector), Moore and Spry (Sussex, England, 12" reflector)
"Viol. hue on crater on W. wall, especially NW corner seen by
Prout & 2 Foleys. Moore & Spry did not see color. All obs. noted
that the crater was dull Proclus 1970 Oct 12 UT 00:54 Observed by Bartlett (Baltimore, MD, USA,
4" reflector, 51x-181x) "Floor darkened to intensity 1.5 deg (albedo) &
c.p. became invis. Next day c.p. reappared & was 5 deg bright & 6deg
bright on 15th" NASA catalog weight=4 (high). NASA catalog ID #1277.
Herodotus 1957 Sep 05 UT 02:55-03:24 Observed by Bartlett
(Baltimore, MD, USA, 5" reflector x180, S=1-5, T=5) Pseudo
peak visible within floor shadow at 03:10h" NASA catalog
weight=4. NASA catalog ID #671. ALPO/BAA weight=3.
On 2002 Feb 24 UT 05:15-05:35 W. Haas (Las Cruces, NM, USA) observed an
obscuration in Herodotus - the shadown was, almost, but not
completely black. ALPO/BAA weight=2.
Johnson, of Des Moines, Iowa, USA, using a 7" reflector and an 8"
refractor, saw a bight streak. The observer looked later, but it was no
longer visible. Cameron thinks that it might have been a reflection
from the wall. Cameron 1978 catalog ID=423 and weight=1. ALPO/BAA
weight=1.
D. Darling of (Sun Praire, WI, USA, using a 12.5" reflector at x150,
noticed a hint of red? colour on the south west rim of Aristarchus.
Brightness measurements were normal for Aristarchus and Herodotus. No
colour seen elsewhere e.g. Prom. LaPlace. The colour on Aristarchus had
gone by 01:15UT. Cameron 2006 catalog extension ID=414 and weight=3.
ALPO/BAA weight=3.
A fleeting faint reddish patch was seen in Gassendi
at 21:15UT. This observation has an ALPO/BAA weight of 2.
Rays of(?) (in?) Herodotus 1955 Oct 28 UTC 18:30 Observed by Kozyrev
(Crimea, Russia, 50" reflector, spectragraph) "Spectrum 3934A (K of
Ca). 3964 (H of Ca) change in luminosity. 13% in H, 19% in K, 2% in H,
3% in K. in photo-line-depth method" NASA catalog weight=5 (very high).
NASA catalog ID #622. ALPO/BAA weight=5.
1996 Jun 28 UT 21:04 F. Ferri and D. Zompatori (Anzio), using
a 20cm f/6 reflector, reported that (translation) "Using a
blue filter the area was invisible". This is a UAI observation
from Italy. ALPO/BAA weight=1.
Babbage 1974 Sep 29 UT 00:00-01:00 Observed by Lord (St Annes-
on-Sea, UK, 10" refractor, Wratten 25 and 44a filters, 125x,
S=II-III). Activity observed in SW floor between A & W. wall.
Details not obscured in either filter, but slightly more
darker than surroundings in the blue filter. NASA catalog
weight=2. NASA catalog ID #1395. ALPO/BAA weight=2.
Ross D 1965 Apr 14 UT 06:03-06:22 Observed by Harris (Whittier?, CA?,
USA, 19"? reflector) "Phenomenon description unavailable. Given at an
ALPO meeting" NASA catalog weight=0 (very unreliable). NASA catalog ID
#874.
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.
Schroter's Valley 1897 Oct 08 UT 22:00 Observed by Pickering
(Cambridge, Maas., USA, 15"? refractor) "Variations in vapor col.
Tillsow, C was largest compared with D&E& most conspicuous 1.3 d after
sunrise. Drawing. (time est. fr. given colon.)" NASA catalog weight=3
(average). NASA catalog ID #291.
On 1988 Jan 02 at 05:57-06:13 UT D. Louderback (South Bend, WA, USA,
using a 8" reflector, seeing 4 out of 10) observed that points B and D
on Cape Agarum faded suddenly from 7.0 to 6.4 (B) and 6.0 (D). However
these returned to their normal levels at 06:13 UT. Cameron 2006
extension catalog ID=316 and weight=4. ALPO/BAA weight=3.
"Brightening in blue filter, 1st for seconds, later for mins". NASA
catalog weight=4 (high). NASA catalog ID #574.
Plato 1971 Nov 01 UT 19:35-20:35 Observed by Kidd (S.Shields,
UK 16" reflector, S=G), Kirsopp (UK), Fitton (Lancashire, UK,
8" reflector x200) "NW (IAU?) rim, small area of obscur. &
bright spot adjacent to it. Was normal at 2035h. Kirsopp
confirmed. Fitton saw nothing unusual in blink patrol. (blink
device detects color rather than brightness)" NASA catalog
weight=4. NASA catalog ID #1318. ALPO/BAA weight=1.
Manilius 1939 Jul 30 UT 06:00 Observed by Haas? (NM?, USA, 12?"
reflector) "Dark area in S. part wad I=3.7 comp. with #449. Cond. were
similar. (phase same. real difference?). (normal here?)"
On 1897 Oct 10 at UT 19:00 Pickering (Cambridge, Mass. USA, 15"
refractor?) observed in Shroter's valley and the vicinity, "Variations
in vapor col. change in direction of cloud rising from F is marked
(time est. fr. given colon.)" The Cameron 1978 catalog ID=292 and the
weight=3. The ALPO/BAA weight=2.
Archimedes 1940 Jun 20 UT 07:30 Observed by Haas (NM, USA, 12?"
reflector) "NE wall (outer) had I=2.5 on this nite but 5.0 on
Aug. 18 (see #471 -- both same phase so real diff. 2.5 normal?)"
NASA weight=4. NASA ID No. #467. ALPO/BAA weight=2.
Near Censorinus 1964 Apr 26 UT 20:00? Observed by Hopmann
(Czchoslovakia?) "Surface brightening somewhat similar to Kopal and
Rackham in #779" NASA catalog weight=3 (average). NASA catalog ID #810.
Proclus 1972 Nov 20 UT 20:20 Observed by Farrant (Cambridge, England,
8.5" reflector, x178) "Dark patch in crater. Disappeared by next nite.
The normal ring seemed thickened. On Dec. 7. the crater appeared
bright. Drawings. (prob. real LTP, nr. FM)" NASA catalog weight=3
(average). NASA catalog ID #1350.
Archimedes 1940 Aug 18 UT 03:25 Observed by Haas (NM?, USA, 12"
reflector?) NE outer wall had I=5.0, but was I=2.5 on June 20
(see #467) (similar colong.)" NASA catalog weight=4. NASA
catalog ID #471. ALPO/BAA weight=2.
Lichtenberg 1951 Jan 22 18:19.2-18:38.5 UT observed by Baum
(Chester, England). Tiny red spot noticed initially and then
faded. Location of spot 31.403N 66.167W. 20cm refractor x90-
x100. Seeing fair-extremely good. NASA catalog assigns a
weight of 3. NASA TLP ID No. #542. 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.
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.
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 1976 Aug 11 06:44 Observed by Bartlett (Baltimore, MD, USA,
4.5" reflector, 45-300x, S=4-3, T=4) "Pale viol. radiance (gas?) on
plateau m. Dark viol. tinge on nimbus. C.p.=10 deg walls=8deg, & all of
floor=8 deg. W.wall out of focus due to haziness (gas?)." NASA catalog
weight=4 (high). NASA catalog ID #1441.
On 1984 Feb 17 at 19:45-22:20UT P. Madej noticed colour in Aristarchus
and telephoned the BAA Lunar Secton TLP network. Mosely at 21:15UT
observed that Aristarchus was both bright and fuzzy - there was some
spurios color (red on south and blue on the north) but this was
replaced by violet. By 21:30UT (transparency=fair) the centre of the
crater was bluish and the west wall creamy white. the north and south
walls were brilliant white. By 22:00-22:30 UT the seeing had improved
and the crater looked unusual - now the centre was violet and the west
wall duller, off-white. By 05:35UT the crater was difficult to define
according to Cook - 4 bands could be seen under II seeing and the north
rim was fuzzy and less bright than the east wall (this was hazy). P.
Moore observed that the crater was normal at 04:00UT. Cameron 2006
catalog extension ID=242 and weight=3. ALPO/BAA weight=2.
On 1984 Feb 17 at 19:45-22:20UT P. Madej (England, seeing=III-
IV, x50)noticed that the crater Reinhold had a blood red spot
on the northern terraces, at the base of the inner wall in a
summit crater on the last of a crater chain or ridge
descending from the top to floor". Cameron 2006 catalog
extension ID=242 and weight=3. ALPO/BAA weight=3.
Proclus 1972 Nov 21 UT 21:30 Observed by Farrant (Cambridge, England,
8.5" reflector, x130) "Thickened bright ring remained, but the dark
patch had disappeared. (dark patch prob. real temporary phenom. as it
was seen nr. FM when contrasts are strongest, yet disappeared" NASA
catalog weight=1 (very low). NASA catalog ID #1351.
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.
Peirescius 1985 Dec 28 UT ~20:56 (Col. 112.5) H. Hill (UK)
observed that this crater was piercingly bright. Repeat
colongitude observations on later dates failed to show a
similar effect. ALPO/BAA weight=2.
Gassendi 1940 Aug 20 UT 03:25 Observed by Haas (NM?, USA, 12"
reflector?) "Largest bright spot on SE pt. of floor had I=8.6
(real changes? see @ '#649, 474, & 475, all similar change)."
NASA catalog weight=4. NASA catalog ID #472. ALPO/BAA weight=2.
Aristarchus 1976 Aug 12 UT 07:30 Observed by Bartlett (Baltimore, MD,
USA, 4.5" reflector 45-225x, S=6=3, T=5) "Nimbus around c.p.=2deg,
S.floor=6deg & was red; rest of floor=8deg. This is only tint in
Aris.). Tonite saw a pale red glow suffasing the S. region of the
crater. Bright blue radiance (gas?) on ENE wall. Viol. radiance on
plateau m gone tonite. Red glow on 13th & the region was yellow-
brown." NASA catalog weight=4 (high). NASA catalog ID #1442.
In 1941 Jul 11 at UT 04:00? Haas (New Mexico?, USA, 12" reflector)
observed near Hansteen "Moving luminous speck, estimated 0.1" diam.,
mag 8 (rept. date was 10. Lunar meteor?". The Cameron 1978 catalog ID=
487 and weight=3. The ALPO/BAA weight=2.
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.
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.
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.
Aristarchus 1976 Aug 13 UT 07:30 Observed by Bartlett (Baltimore, MD,
USA, 4.5" reflector 45-225x, S=6=3, T=5) "Nimbus around c.p.=2deg,
S.floor=6deg & was red; rest of floor=8deg. This is only tint in
Aris.). Tonite saw a pale red glow suffasing the S. region of the
crater. Bright blue radiance (gas?) on ENE wall. Viol. radiance on
plateau m gone tonite. Red glow on 13th & the region was yellow-
brown." NASA catalog weight=4 (high). NASA catalog ID #1442.
On 1985 Dec 29th at UT 23:23-23:58, M. Mobberley (Bury St. Edmunds,
Suffolk, UK, seeing II-III) made a video scan of the Moon. P.W. Foley
examined the tape and noted something that Mobberley had not seen
visually. Two scans of Totticelli B had taken place, one at 23:23 and
the other at 23:58UT. In the first a brilliant point appeared briefly,
on the western rim, positioned at 3o'clock. In the second video
sequence this brilliant spot was present continuously and wandered
along the rim. It was possible to monitor frequency of turbulence
present, this apparent movement did not ppear to conform, although
judgement here was extremelydifficult as the feature was at absolute
point of resolution, a little better than 0.5 mile. Also considered was
the implication of the equipment effect, this did not seem to fit
either as other nerby craters in the same configuration, 30% shadow
filled with sunlight on exterior of western walls. A point to watch for
in future. ALPO/BAA weight=3.
Janssen K 1992 Sep 14 UTC 21:30-0025 Observed by Brook (Plymouth, UK,
4" reflector, Antoniadi II seeing). "Crater > & similar one was sharp
EW wall especially bright. Floor in shadow. No obscuration on floor but
no detail in bright part could be seen. At 23:20 had dimmed slightly,
continued to do so. At 00:40 was noticeably < Began to see detail
00:25, TLP over. G. North (Herstmonceux, 18" reflector) took photos in
this time K was grayish, not very bright. C. Brook noticed K very
bright condition its rays 1/2 length. L. Harris (UK, 10" Reflector with
CCD camera). Cameron 2006 catalog ID=453 and weight=5.
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.
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.
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.
C.Brook (Plymouth, UK) noticed that the east wall of this crater was
brighter than the walls of nearby craters. Cameron comments that Foley
says that this is normal and agrees. Cameron 2006 Catalog Extension ID=
433 and weight=1. ALPO/BAA weight=1.
Plinius 1937 Jul 27 UT 04:37 Observed by Haas (Alliance, OH,
12"? reflector) "E. end of c.p. varied in intensity at similar
lighting conditions. Intensity was low est on this nite, being
at I=5.0. Other nites were:
Date Time col. I
6/23/37 0600 84 8.5
7/20/37 0200 58 6.0
7/22/37 0300 78 6.5
9/22/37 0700 114 6.0
9/24/37 0830 142 6.5
10/17/37 0100 59 8.5
10/21/37 0500 109 8.5
NASA catalog weight=4 (good) on this and the nights listed. NASA
catalog ID #422. ALPO/BAA weight=3.
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.
S. Beaumont of Windemere, England noted that the crater appeared
to be divided into two. Cameron 2006 Extension catalog ID=381
and weight=3. ALPO/BAA weight=1.
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.
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
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 1981 May 01 at UT 10:00 B. Hobdell (St Petersburg, FL, USA,
2?" refractor) observed in Lacus Mortis, some blue flashes for about
two minutes at 10:00UT. The Cameron 2006 catalog ID=134 and weight=1.
The ALPO/BAA weight=1.
On 1981 May 01 at UT10:05 B. Hobdell (St Petersburg, FL, USA, 2?"
refractor) observed a small blue flash in Plinius? The Cameron 2006
catalog ID=134 and weight=1. The ALPO/BAA weight=1.