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Old 14-06-2021, 04:34 PM
Startrek (Martin)
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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 6Ē 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 didnít help ( they werenít 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
Iíll 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 )

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Old 14-06-2021, 09:21 PM
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PKay (Peter)
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A good start M, sign of good things to come.

Will look forward to what you come up with.

Great effort
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Old 15-06-2021, 09:41 AM
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Having shot this target recently, I know the pain of overestimating it. Definitely a dim target so your results for just 2 hours of data is actually excellent. Good work, Martin
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Old 15-06-2021, 04:11 PM
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rustigsmed (Russell)
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nice work Martin - will have to give this target a go at some stage.

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Old 15-06-2021, 06:06 PM
Startrek (Martin)
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Thanks All,
Yes this nebula is quite dim and requires nice stable skies to capture quality data to expose some depth
Iíll definitely be giving this one another shot
Thanks again for all your encouraging comments
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