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Old 18-12-2017, 09:33 PM
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alocky (Andrew lockwood)
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alocky is offline
 
Join Date: Aug 2010
Location: perth australia
Posts: 1,291
M42 with the 16"

I can't complain about light pollution for this object! This is an HDR made using 30s subs for the Trapezium, and 5 minutes for the outer regions. All up it's only about 5 hours worth of LRGB data, but of course this is one of those objects where the challenge is in the processing, and not the image acquisition! I'll blame the seeing for the lack of resolution of the E and F stars, but you can see them very clearly in the linear data (along without about 30 more little ones). Maybe it's time to learn about star masks in PI!
Anyway, hopefully this might stimulate some discussion about the dos and don'ts of processing this magnificent object.
Before the saturation addicts jump in - I've chosen to keep the colouring subtle, because I can see these hues visually in my 25", and cranking up the colour just looks wrong to me.
Anyway, I welcome comments and thanks for looking.
Hi res version here:
https://www.astrobin.com/325894/B/
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