NGC 7023 -Iris Nebula (Tom Engwall)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: HD200775 · Iris Nebula · LBN 487 · LDN 1170 · LDN 1172 · LDN 1173 · LDN 1174 · NGC 7023

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NGC 7023 -Iris Nebula

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NGC 7023 -Iris Nebula

The initial RGB combination of this image revealed a lot of muddy brown nebula but clearly that is what is there, so I basically went with it.. The luminance added some structure but did not have a dramatic effect. The processing workflow was pretty simple - boosting the blues and using LHE and Dark Structure Enhance on the starless image. I used game script to to target the Iris. I did blend in some HDRMT and I believe that give the Iris some more structure. I usually process my images many times over and this was no exception. In one project, I used AutoColor but I felt that made the background unrealisticly dark, so I'm not sure what I think about AutoColor. One new tool that I used and like was Bill Blanshan's Star Reduction process. I believe this works quite well - definitely the best Star Reduction process out there. Its purely Pixel Math and Adam Block has a great video up explaining that process. I figure if it's good enough fo Adam Block, it's definitely good enough for me.

The exposures ere as follows:

R 123 x 300 sec
G 123 x 300 sec
B 125 x 300 sec
L 126 x 300 sec
Total 41.4 Hours

PixelSkiesAstro

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Status	Advanced success
Started	...
Astrometry.net job	6174513
PixInsight job	BYVLWD4O3HQ7IB5FR4143P1C4BO9PYN6
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	21h01m37s.494
RA (top/left)	20h56m44s.894
RA (top/right)	20h57m41s.195
RA (bottom/right)	21h06m15s.346
RA (bottom/left)	21h05m47s.242

Dec (center)	+68°10′03″.70
Dec (top/left)	+68°45′32″.30
Dec (top/right)	+67°31′30″.28
Dec (bottom/right)	+67°34′02″.73
Dec (bottom/left)	+68°48′12″.98

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NGC 7023 -Iris Nebula

NGC 7023 -Iris Nebula

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NGC 7023 -Iris Nebula

NGC 7023 -Iris Nebula

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