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.
ALPO Request: Can you detect any colour, inside the crater, on the floor and elsewhere? Can you image any colour? Minimum telescope aperture needed: 6", and if possible try using a refractor. All images or sketches should be sent to me on this email adrress: a t c @ a b e r . a c. u k
BAA Request: Aristarchus area - We are trying to explain an observation from Meudon Observatory in France made in 1881 of a bright rope-like effect seen in the vicinity of this crater. Please send any images 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 .
BAA Request: On 2012 Jan 09 UT 21:01-21:08 Hahn crater was imaged by Nick Hazel (Beverley, Yorkshire, UK, Nikon D7000 with 70-300 zoom at max, with 2x teleconverter, at f9, 1/320 sec, ISO 400 – tripod mounted, mirror up), A series of images were taken. The 21:06 one showed a grey column cutting across the central floor of the crater from the west and then bisecting the eastern rim. All detail inside is completely invisble. Some (but not all) of the other images showed a more blurred view of this feature. It is possible that this was a seeing ripple effect, or just the natural appearance of shadings on the Moon at this time, however we would like to capture images of this area to be sure. Small aperture telescopes or telephoto lens similar to Nick's can be used. Try switching the tracking off to see what effect motion blur has during the exposure - to see4 if this replicates the effect. Please send any images you take to: a t c @ a b e r . a c . u k
BAA Request: Tycho. We are trying to replicate, using modern day images, a sketch in Plate X in BAA The Moon from published: 1950 Jun Vol 1, No. 1. It is for a sketch made by H.P. Wilkins from 1949 Jun 05. The original sketch was made with an 12" telescope. Please send any images 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
BAA Request: Its around this Co-Longitude that some observers have reported seeing an Ashen Light effect on the shadowed floor of Plato, caused by scattered light off of an illuminated peak on the rim. Please have a go either visually, or with long exposure time lapse imagery to see if you can pick up the development of this weak illumination effect on the floor. Please send any sketches or 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
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
SLA Request: Deluc H. On 2019 Oct 06 Alberto Anunziato observed an rapid change in appearance (few tens of minutes) in relation to west rim - presumably an illumination effect. Please submit any sketches or images of this crater to me and it will be passed onto the SLA. Please email these to: a t c @ a b e r . a c. u k
Apollo 15: This is what the lunar surface would have looked like when Apollo 15 touched down on the Moon. Aim for the area of Rima Hadley. The illumination and the shadows are exactly the same. There is no scientific value in imaging this, but from the nostalgic point of view it might be interesting to observe. Feel free to send your observation in to the BAA or ALPO and we will put it in our archives, but as we have a lot of these images already, we may not publish it, unless it is exceptionally high in resolution. Minimum diameter scope to use would be 20cm, but larger apertures are preferred:
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