The drawing is mainly the view at 140x without a filter, although 45 and 230x and an OIII filter were also used. 16", Cherry Springs dark sky park, July new moon.
M20 2014-07-24.jpg
The drawing is mainly the view at 140x without a filter, although 45 and 230x and an OIII filter were also used. 16", Cherry Springs dark sky park, July new moon.
M20 2014-07-24.jpg
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