Observation by Alan Snook: Tranquillity Base

Uploaded by

Alan Snook

Observer

Alan Snook

Observed

2026 Jan 24 - 17:39

Uploaded

2026 Jan 25 - 13:05

Objects

The Moon

Equipment

Altair Astro 130EDT refractor, ZWO ASI662MC, UVIRBlock.

Exposure

4ms, best 50% of 10,000 frames.

Location

Kent, UK

Target name

Tranquillity Base

Title

Tranquillity Base

About this image

Imaged through cloud. Seeing was stable. The crater diameters are Armstrong 2.9 miles, Aldrin 2.1 miles and Collins 1.5 miles. Check out the concentric wrinkle-ridge formation north of Collins. This is Lamont. It marks the location of a mascon. Note also the sharp tonal boundary east (right) of Lamont. Apparently it marks the boundary between older, lighter lava and younger, dark lava.

Files associated with this observation

Moon_2026-01-24_17-39-06_UVIRBlock_AlanSnook.png (2.1 MB)

Like this image

Alex Pratt, Dawson, Michael O'Connell

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