Thread: M42 first shot
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Old 26-12-2007, 10:12 AM
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multiweb (Marc)
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Join Date: Oct 2007
Location: Sydney
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M42 first shot

Hi Guys, I took that photo last month on a mate's small refractor, but on a very good mount. Can't remember what the scope was though.
10 x 1min exposures at ISO800 on a Nikon Coolpix 995. Stacked and further processed in photoshop [with Jase amazing HighPass filter trick ].

My camera attracts loads of noise especially in the red but I can deal with most of it. Couple of questions though.

1_ Why am I getting purple halos around the brightest stars? Is it a focus issue?

2_ Some stars on the edge of the field have really weird shapes too. Why is that?

Thanks in advance for your help and feedback. All comments most welcome. Got heaps to learn.
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