ALPO Request: Can you resolve any details inside Picard tonight? Is it surrounded by a nebulous patch? We are just checking up on the normal appearance of this crater and its surrounds, to verify an observational report from 1994 during the ALPO Clementine watch. Use a telescope of aperture 6 inches or larger. All sketches or monochrome images should be emailed to: t o n y . c o o k @ a l p o - a s t r o n o m y . o r g
BAA Request: On 2012 Sep 24 E. Horner noticed a very strong red colour around part of the sunlit inner rim of Copernicus, sometimes a 1/4 and sometimes 1/2 around the interior. Quite likely this was some form of atmospheric spectral dispersion - though the observer checked for similar effects on other craters but saw none. But to be sure we would like to obtain some colour images or visual observations of this crater. The minimum sized telescope to be used would ideally a 6" reflector. Low elevation angles for the Moon are ideal as we want to try to replicate this effect if it is indeed due to atmospheric spectral dispersion. 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 supply images, or sketches, of this area, especially covering the area to the east. Any size scope can be used for this study. All observations should be emailed to: a t c @ a b e r . a c. u k
BAA Request: In 1991 Dec 23 Bob Mizon (BAA) sketched the crater Cleomedes and Mare Cisrium. In the floor of the shadow filled Cleomedes was an dusky oval area - presumably the last rays of the Sun reaching the floor. We would like yuo to either sketch, or image, over time, how the shape of this oval area changes, and eventually vanishes. How late in terms of colongitude can it still be seen? Is there any hint of colour present? Telescopes of aperture 6 inche or larger should be used. Please send any observation you make 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
BAA Request: On 2013 Aug 26 Peter Grego observed a dark patch just east of Jansen D. He had not seen this before, therefore it is important to repeat this observation under simuilar illumination conditions. It maybe a buried crater? Ideally suited to scopes of aperture 8" or larger. Please send any high resolution images, detailed scetches, or visual descriptions to: a t c @ a b e r . a c. u k .
ALPO Request: Fracatorius - please try to image / sketch / visually observe the interior shadowed floor of the crater on the sunset terminator. Can you detect a central bright spot in the dark dhadow filled floor of the crater? How does its appearance change over time? Minimum aperture scope to use 9cm. Please send any images 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
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: 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
ALPO Request: On 2012 Feb 28 Raffaello Braga noted that only the tip of the central peak was visible. Most of the crater was in darkness - this was normal at this stage in illumination. When viewed through a red filter, the central peak was visble, but however when viewed through a blue filter it was invisible. Please try to observe this crater visually with red and blue filters, to see if you can replicate this effect? If so then check for similar effects on other craters on the terminator. Otherwise try to obtain some high resolution colour images. This work is suitable for telescopes of 4" aperture or larger - if you have a choice of a efractor or a reflector, please try the refractor. Please send any observations you make 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. 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 N. Travnok (Brazil) on 2020 Jul 27 UT 23:00 who commented on an unusual appearance to the floor. It would be really useful to have visual observing of the appearance and please note down what the seeing conditions are like. If you want to image it at high resolution, please go ahead but remember that any image stacking should not be from sections of video of longer than 1 min duration as the shadows change in length rather quickly at sunrise. Any sketches, visual descriptions, or images taken, should be emailed to: a t c @ a b e r . a c. u k
Face of Albategnius: you can see the profile of a face in a shadow from the eastern edge of this crater - this is a Clair-Obscur effect. Clair-Obscur have no scientific importance and are just tricks of the light that make us think we see something like a letter of the alphabet or a shape or face. Clair-Obscur effects are scientifically pointless to observe. However, if you want to be thrilled, or obtain an image to impress someone then give them a go. If you do observe, or image this, by all means send your observation into ALPO or the BAA, but we probably won't publish, but will nevertheless retain in our archives, just in case features elsewhere in the image are of interest to future researchers.
Monte Caucasus: "shadow face" silhouette Clair-Obscur effect. Clair-Obscur effects have no scientific importance just tricks of the light that make us think we see something like a letter of the alphabet or a shape or face. Clair-Obscur effects are scientifically useless to observe. However, if you want to be thrilled, or obtain an image to impress someone then give them a go. This effect on the southern end of Montes Caucuses looks like the side silhouette of a cartoon human face. We are still slightly undertain about the precise colongitude range, so if you do not see the face, try again later. If you do observe, or image this, by all means send your observation into ALPO or the BAA, but we probably won't publish, but will nevertheless retain in our archives, just in case features elsewhere in the image are of interest to future researchers. Note that we have some uncertainty in the colongitude range - so if you don't see it, please tells us the date and UT so we can make some improvements in the predictions.
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
Plato's Hook: a hook like effect in one of the shadow spires in Plato, near a rim - this is a Clair-Obscur effect. It was first seen by H.P.Wilkins in 1952. Clair-Obscur have no scientific importance and are just tricks of the light that make us think we see something like a letter of the alphabet or a shape or face. Clair-Obscur effects are scientifically pointless to observe. However, if you want to be thrilled, or obtain an image to impress someone then give them a go. If you do observe, or image this, by all means send your observation into ALPO or the BAA, but we probably won't publish, but will nevertheless retain in our archives, just in case features elsewhere in the image are of interest to future researchers.
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 .
Eyes of Clavius: you can see this crater with two eyes, Clavius C and Clavius D - this is a Clair-Obscur effect. Clair-Obscur have no scientific importance and are just tricks of the light that make us think we see something like a letter of the alphabet or a shape or face. Clair-Obscur effects are scientifically pointless to observe. However, if you want to be thrilled, or obtain an image to impress someone then give them a go. If you do observe, or image this, by all means send your observation into ALPO or the BAA, but we probably won't publish, but will nevertheless retain in our archives, just in case features elsewhere in the image are of interest to future researchers.