BAA Request: Can you see, or image, 4 points of light in the
shadowed floor of the crater? How do these change in
appearance over time? This is not a TLP but is still
interesting to observe as it might look like a string of
pearls effect. Please send any images, or sketches, to:
a t c @ a b e r . a c. u k
These can only be observed using low-light level cameras running at 25 frames per sec,
or faster, and capable of recording 9th or 10th magnitude stars in real time.
Dates/UTs of observing runs, or detections of impacts, should be emailed to:
ALPO - email: c u d n i k @ s b c g l o b a l . n e t
BAA - email: a t c @ a b e r . a c . u k
UAI - email: a m . 5 4 8 5 2 @ g m a i l . c o m
BAA Request: Examine the floor visually, sketch, or image to
show the progression of the shadow spires across floor and
the emergence of the centre of the floor into sunlight. If
observing visually, how would you describe the appearance of
the central lit area on the floor? If imaging, do a time lapse
e.g. 1 image per minute to show the progression of the shadow
spires. We are asking for these observations following an
observation by P. Shepherdson (BAA) on 2020 Feb 01 UT
19:40-19:50 who commented on an unusual appearance to the
floor. However an image supplied suggests it is just shadow
spires. Nevertheless we would like to check at a repeat
illumination. As another challenge, we have seen bright
stripes appear between shadow spires on the floor but these
fade in brightness after the shadow spires recede. See if you
can capture these on an image sequence and help us learn more
about what is causing this effect.Any sketches, visual
descriptions, or images taken, should be emailed to:
a t c @ a b e r . a c. u k
These can only be observed using low-light level cameras running at 25 frames per sec,
or faster, and capable of recording 9th or 10th magnitude stars in real time.
Dates/UTs of observing runs, or detections of impacts, should be emailed to:
ALPO - email: c u d n i k @ s b c g l o b a l . n e t
BAA - email: a t c @ a b e r . a c . u k
UAI - email: a m . 5 4 8 5 2 @ g m a i l . c o m
ALPO Request: This request comes about because of two
observations. Firstly on 2009 Nov 25 Paul Abel and others
detected some colour on the inner west illumntated slopes of
this crater. No similar colour existed elsewhere. On 2012 Aug
25 Charles Galdies imaged this crater and detected a similar
colour, approximately in the same location, though he also
imaged colour elsewhere. It is important to replicate this
observation to see if it was natural surface colour,
atmospheric spectral dispersion, or some effect in the camera
that Charles was using, namely a Philips SPC 900NC camera.
The minimum sized telescope to be used would ideally a 8"
reflector. Please send any high resolution images, detailed
sketches, or visual descriptions to:
a t c @ a b e r . a c. u k .
ALPO Request: The area to look at here is to the west of
Herodotus, near the terminus of Valles Schroteri, where you
should be able to see four spots of light (just east of the
terminator). Are these better visible in red or blue light? The
original observation was made using Wratten 38A and Wratten 25
filters, but any blue and red filters will do, or indeed a
colour camera. Do these spots fade over time? If so, in what
order? If imaging, then time lapse imaging would be useful here.
Minimum aperture telescope to use should be a 6", and if
possible a refractor - aim to use magnifications of around 114x
to 228x. Any visual descriptions, sketches of images should be
emailed to: a t c @ a b e r . a c. u k .
BAA Request: Two observers have reported colour on the rim
around this colongitude, once in 1938, and again in 2013. Please
take a look and report what you see, and where on the rim.
Please send any high resolution images, detailed sketches, or
visual descriptions to: a t c @ a b e r . a c. u k .
ALPO Request: Please take images of the Full Moon, but make
sure you under expose as we want to avoid bright ray craters
like Aristarchus, Tycho, Proclus etc from saturating. The
purpose behind this is we want to compare with images of
Earthshine which are essentially zero phase illumination
images, like at Full Moon. There have been reports in the past
that Aristarchus varies greatly in brightness compared to
other features. David Darling (a past TLP coordinator) has
suggested this was simply due to libration effects, i.e.
viewing angles, so we would naturally like to test this
theory out. Also if you have any past images of close to Full
Moon, please send these in too if the above mentioned craters
are not saturated. Pretty much any size telescope can be used
to take these images so long as we can clearly see the above
craters. Obviously do not attempt this if the sky is cloudy or
hazy. Observations will be presented in the "Lunar Observer"
- a monthly publication of the Lunar Section of ALPO. All
reports should be emailed to:
a t c @ a b e r . a c . uk
BAA Request: Please compare the brightness of Aristarchus
with Proclus, Censorinus, or any other similar sized bright
crater, over time e.g. every 5 or 10 min. Can you see any
changes in brightness? If so which crater is the one that is
varying Apertures as small as 2" diameter can be used for
this work, so long as the magnification is of the order of
100x. Please send all brightness meaurements or image
sequences to:
a t c @ a b e r . a c. u k
BAA Request: 1983 Jan 29 was a famous TLP seen independently by
many different observers. This is a repeat illumination /
libration observing opportunity (quite rare). Please compare the
brightness of this crater to Proclus, Censorinus and other
bright craters. Also see if you can see any colours
inside/outside this small crater. Also any high resolution
images (monochrome or colour) would be welcome. All observations
should be emailed to: a t c @ a b e r . a c. u k .
BAA Request: Cyrillus. There is a small white craterlet just
north of the three central peaks. We are interested to receive
high resolution images of this in order to find out at what
selenographic colongitude, in the lunar evening, that it loses
it's white spot appearence. Please use scopes largher than 6
inches in diameter.
Please email these to: a t c @ a b e r . a c . u k
These can only be observed using low-light level cameras running at 25 frames per sec,
or faster, and capable of recording 9th or 10th magnitude stars in real time.
Dates/UTs of observing runs, or detections of impacts, should be emailed to:
ALPO - email: c u d n i k @ s b c g l o b a l . n e t
BAA - email: a t c @ a b e r . a c . u k
UAI - email: a m . 5 4 8 5 2 @ g m a i l . c o m
These can only be observed using low-light level cameras running at 25 frames per sec,
or faster, and capable of recording 9th or 10th magnitude stars in real time.
Dates/UTs of observing runs, or detections of impacts, should be emailed to:
ALPO - email: c u d n i k @ s b c g l o b a l . n e t
BAA - email: a t c @ a b e r . a c . u k
UAI - email: a m . 5 4 8 5 2 @ g m a i l . c o m
These can only be observed using low-light level cameras running at 25 frames per sec,
or faster, and capable of recording 9th or 10th magnitude stars in real time.
Dates/UTs of observing runs, or detections of impacts, should be emailed to:
ALPO - email: c u d n i k @ s b c g l o b a l . n e t
BAA - email: a t c @ a b e r . a c . u k
UAI - email: a m . 5 4 8 5 2 @ g m a i l . c o m
These can only be observed using low-light level cameras running at 25 frames per sec,
or faster, and capable of recording 9th or 10th magnitude stars in real time.
Dates/UTs of observing runs, or detections of impacts, should be emailed to:
ALPO - email: c u d n i k @ s b c g l o b a l . n e t
BAA - email: a t c @ a b e r . a c . u k
UAI - email: a m . 5 4 8 5 2 @ g m a i l . c o m
These can only be observed using low-light level cameras running at 25 frames per sec,
or faster, and capable of recording 9th or 10th magnitude stars in real time.
Dates/UTs of observing runs, or detections of impacts, should be emailed to:
ALPO - email: c u d n i k @ s b c g l o b a l . n e t
BAA - email: a t c @ a b e r . a c . u k
UAI - email: a m . 5 4 8 5 2 @ g m a i l . c o m
BAA Request: Please try to image the Moon as a very thin
crescent, tryimg to detect Earthshine. A good telephoto lens
will do on a DSLR, or a camera on a small scope. We are
attempting to monitor the brightness of the edge of the
earthshine limb in order to follow up a project suggested by
Dr Martin Hoffmann at the 2017 EPSC Conference in Riga,
Latvia. This is quite a challenging project due to the sky
brightness and the low altitude of the Moon. Please be very
careful around sunrise so as not to be observing once the Sun
has risen. Do not bother observing if the sky conditions are
hazy. Any images should be emailed to:
a t c @ a b e r . a c . u k