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Lobster Nebula (over cooked )
This is my first image of NGC 6357 Lobster Nebula captured under Sydney Bortle 8 skies with my 6” newt and 2600MC using an L Extreme filter
Conditions were average early on ( guiding around 1.00 arc sec ) but later into the evening PH2 guiding was progressively getting worse at 1.40 arc sec error ( guide Star profile HFD jumping up and down like a yo yo 4.40 to 6.00 )
Big mistake was pushing 5 minute subs ( should have run 3 minute subs ) Had a few Ra spikes which didn’t help ( they weren’t periodic )
Subs had bloated stars and noise floor was unusually high
Anyway processed the best 2 hours of data I could find , stacked in DSS and processed in Startools V1.7 OSC Linear data set
Managed some sort of image out of poor data
I’ll be imaging this object again on a more stable night with different camera settings and framing it up a bit better ( missed the bottom section of the Lobster due to poor framing )
Comments Welcome
Thanks
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