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Photo

NGC 7023 - Iris Nebula

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#1 JAS62

JAS62

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Posted 01 June 2020 - 07:05 PM

Iris Nebula (NGC 7023). Bortle 4, good seeing. Does anyone else find this shot to be a challenge to process?

 

NGC7023 052620

 

Hardware:

Apertura 6” F/4 Newtonian Astrograph

Sky-Watcher EQ6-R Pro mount

Nikon 5300 Ha Mod (Life Pixel)

Svbony 50mm Guide Scope

ZWO ASI120MC-S Guid Camera

Telrad Finder

 

Software:

Astrophotography Tool (image capture session)

PHD2 Guiding

SharpCap Pro (Polar Alignment)

Deep Sky Stacker

StarTools

Stellarium

 

Dataset:

30 x 300s Light Frames ISO200

30 x 300s Dark Frames

30 x 1/60 Flat Frames

30 x 1/4000 Bias Frames

 

StarTools processing log available here:

 


  • Starman27, Thomas Marshall, Cosmo Geezer and 3 others like this

#2 sunnyday

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Posted 01 June 2020 - 07:41 PM

very nice photo, the detail is very good, like the colors.
well done and thank you.



#3 whwang

whwang

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Posted 01 June 2020 - 09:53 PM

Nice.  But the reddish band of light that goes right through the Iris cannot be real.  It should be some kind of artifact.



#4 JAS62

JAS62

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Posted 02 June 2020 - 01:26 AM

Nice.  But the reddish band of light that goes right through the Iris cannot be real.  It should be some kind of artifact.

Yes, I hear you.  However it's in every one of my subs.  It seems to fade a bit towards the ends and on close inspection it is embedded in the dust.  Not something that will remove easily.  I don't know what caused it.  It looks artificial until you zoom in and look at the detail.  Not sure where is came from, but it's well buried in the image.



#5 whwang

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Posted 02 June 2020 - 01:40 AM

Could be light leakage, or reflection from a nearby bright star.  Can't be certain though.




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