Iris Nebula NGC7023 v2022 (matthew.maclean)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: HD200099 · HD200775 · Iris Nebula · LDN 1167 · LDN 1168 · LDN 1170 · LDN 1171 · LDN 1172 · LDN 1173 · LDN 1174 · NGC 7023 · PGC 2817439 · PGC 65642 · T Cep

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Iris Nebula NGC7023 v2022

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Iris Nebula NGC7023 v2022

The Iris Nebula has never interested me too much before; it looks nothing like an iris to me and, even though the core of the reflection nebula is really bright, it isn't very friendly for light-polluted skies. I took a bunch of data only because it is one of the first non-galaxy targets I have a good view of in the spring, but I did not initially think the data was worth doing too much with.

I have begun going back through several sets of data I took this past year that I never processed for various reasons. Once I started looking at this one a bit more, what I've realized is that this is really the first time I have collected data where I can see some of the surrounding dark/dust structure. In my previous attempts on targets like this, dark nebula regions just appear as an absence of stars. The integrated image is pretty noisy (lots of liberal use of NoiseXTerminator here!), so the dark structures are not amenable to heavy stretching; however, the fact that I can see something suggested to me that, with sufficient integration time (>>6 hours), there is some hope to be able to get a decent result on a target like this. This image at least puts the Iris Nebula back into the category of targets I will not purposely avoid - the Squid is still number one on my "it's better to just stay inside" list as I have a nice, very lonely bat nebula image I've never posted.

So this one is maybe a work in progress or a good step to trying for improvement depending on what the spring weather is like.

Northeast Imagers
Broadband under Bortle 7/8/9
William Optics GT Series
Light Polluted skies

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Status	Advanced success
Started	...
Astrometry.net job	6822938
PixInsight job	WNFWMHHIU2GY9MEWB9B4UK23E1NH10BA
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	21h01m30s.60
RA (top/left)	20h50m33s.86
RA (top/right)	20h53m01s.30
RA (bottom/right)	21h11m22s.20
RA (bottom/left)	21h11m01s.36

Dec (center)	+68°09′25″.2
Dec (top/left)	+69°21′06″.2
Dec (top/right)	+66°50′08″.7
Dec (bottom/right)	+66°55′17″.6
Dec (bottom/left)	+69°26′54″.3

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Iris Nebula NGC7023 v2022

Iris Nebula NGC7023 v2022

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Iris Nebula NGC7023 v2022

Iris Nebula NGC7023 v2022

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