2025 December 1
Lunar Section Circular – December 2025
Welcome to the BAA Lunar Section Circular for December.
https://britastro.org/wp-content/uploads/2025/12/2025-12-lsc.pdf
Don’t forget to try out some of Tim Haymes occultation predictions – these are always fascinating to watch or video. K.C. Pau has made an interesting discovery about when a “rille is not a rille” and Barry Fitzgerald discusses mysteries about the floor of Gassendi. Finally, a kind of Advent Calendar of what to observe on the Moon, and when, is located on the back page.
It’s not too late to register for the Lunar Geminid impact flash observing session on the morning of Dec 12-14. Many amateur astronomers have exactly the right kinds of cameras and telescopes needed for this work. The more observations of each impact flash the better as this helps us to learn about the shapes of impact flash light curves more precisely than anybody else has done before!
You can register on: https://lif.mi.imati.cnr.it
Last time I looked 130 observers had already joined up world-wide on this Italian Space Agency/ESA LUMIO mission project.
You can learn how to take part observing wise by watching 2 videos on:
https://lif.mi.imati.cnr.it/open_search_page.php?query_by=category&search_key=CMN-000000067
Tony
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