Celestial hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  NGC 6997  ·  NGC 7000  ·  North America Nebula  ·  Sh2-117
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North America Nebula in Ha, Leigh Walker
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North America Nebula in Ha

Getting plate-solving status, please wait...
North America Nebula in Ha, Leigh Walker
Powered byPixInsight

North America Nebula in Ha

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Description

This is first attempt at some narrowband.In a rush to get first lights with ZWO ASI183MM didn't calibrate filter wheel.Thought I had taken x10 180s Ha,O3,S2.Found that all subs where remarkably  similar except O3,which I had taken at bias 11 instead of 111.DoH
So infact this is 30X180 Ha only.Pixinsight multiScaleLinear transform NR and dynamic background extraction.Tweaked on photoshop.I don't like the look of the stars.There was quite a heavy dew and the warming strap was only on lowest setting air temp 12c dew point about 10.Dont know if it was dew forming or very high faint cirrus clouds ?Probably both.

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North America Nebula in Ha, Leigh Walker