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Hi Kev,
Both M42 shots are through an ED80 with a pflat2 reducer/flattener (giving focal ratio of f6).
450D image was Jan 2009 from a mix of 5min, 3min, and 30sec subs at ISO800 .... how many subs I don't recall, as I only l kept the stacks.
QHY12 image was Jan 2014 from 10x2min subs for the core (Gain 22, Offset 120), and 42x6min subs for the nebulas (Gain 30, Offset 150).
Cheers.
Last edited by Jeff; 29-01-2015 at 08:12 PM.
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