Iris Nebula - NGC 7023 (Mike Jaworski)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: LBN 487 · LDN 1168 · LDN 1170 · LDN 1171 · LDN 1172 · LDN 1173 · LDN 1174 · NGC 7023 · T Cep · VdB139

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Iris Nebula - NGC 7023

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Iris Nebula - NGC 7023

The Iris Nebula is located in Cepheus and so even if the moon is up, the scope is pointed away from it. This is my first attempt at a dark nebula - I'm trying to figure out how hard it is with my equipment. The first version (A) is 1.5 hrs ... I can see I'm going to need a lot more. As I add more data I'll continue uploading revisions.

Original
B
C
D
Final
E

B

Description: INTERIM: I took about 3+ hours of RGB to go with the Lum already obtained. I plan on getting about 3 hrs more Lum before I call it finished. Extra color data is helping show the cloud, though. I also guess I didn't do a horizontal flip on the image compared with the original upload... oh well.

Uploaded: ...

C

Description: Added another 4 hrs of luminance data to bring the total up to around 9 hrs - my deepest image yet!

Uploaded: ...

D

Description: Rev. D: months ago I had asked for help on CN for this image. Several people made passes at the data with PI and other programs and made me realize how much I was wiping out of the image. I reprocessed the luminance data, only, and came up with this. The discussion also revealed that my Green channel was pretty nasty, so some of the color data needs to be retaken.

Uploaded: ...

E

Description: Rev E: Obtained new Red and Green data sets and re-processed the lot. It is improved, but a giant blob appeared in the lower left due to some flat artifact in the green channel. Even so, some cropping and it's gone. I think it's better now.

Uploaded: ...

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Status	Advanced success
Started	...
Astrometry.net job	1834847
PixInsight job	YXD121VSP4YZDX348L60AFU6VZKPTUFF
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	21h01m09s.15
RA (top/left)	21h09m34s.18
RA (top/right)	20h51m52s.99
RA (bottom/right)	20h52m11s.30
RA (bottom/left)	21h10m56s.31

Dec (center)	+68°05′58″.9
Dec (top/left)	+67°21′44″.3
Dec (top/right)	+67°27′31″.7
Dec (bottom/right)	+68°48′33″.6
Dec (bottom/left)	+68°42′19″.8

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Iris Nebula - NGC 7023

Iris Nebula - NGC 7023

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Iris Nebula - NGC 7023

Iris Nebula - NGC 7023

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