Aristarchus and Vallis Schroteri

Object Name: Aristarchus and Vallis Schroteri
Object Type: Lunar Crater
Location: Bristol, UK
Date: 18th Dec 2010
Media (graphite pencil sketch at the scope and then digitized using graphics tablet and Photoshop)

I usually sketch in some detail at the scope (mainly HB and 2B). I then scanned the result into Photoshop and use a Bamboo Pen graphics tablet to remaster the sketch. The final sketch was then “blurred” a touch to simulate the actual view which is never as sharp as I would like to see!)

Observational date: I use a Nexstar 8SE teamed with a Hyperion 8-24 mm zoom. Most of the sketch was at the 16mm stop with occassional use of Barlow and was drawn in moderate seeing conditions. The moon was 13 days old.
I could see the main circular formation with the hint of rays in SE. The crater had high walls although I could not see the terraces. The flat floor had a smallish central mountain. Herodotus was prominent to the W. Vallis Schroteri could be seen N of Herodotus by a craterlet called ‘the Head of Cobra’. The valley ran towards N then W.
Chris Lee


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