NGC7023 Iris Nebula, Ghost Nebula and LBN468 (Barry Wilson)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: 4 Cep · NGC 7023 · Sh2-136 · T Cep · The star 4Cep · VdB139 · VdB141

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NGC7023 Iris Nebula, Ghost Nebula and LBN468

Link: https://barrywilson.smugmug.com/

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NGC7023 Iris Nebula, Ghost Nebula and LBN468

Link: https://barrywilson.smugmug.com/

I have to say that this image has been tough to process with a lot of gradients lurking from when I captured the data through July and early August. I'm not particularly happy with the image at the moment and I hope to capture more data. It has sat on my hard drive for the last couple of weeks while I've been away on holiday and I've been ruminating on my processing and star control - so many stars! I have much of the LRGB for the frame to the right to include LBN 468 but the gradients there are even worse and I cannot get the mosaic to merge nicely even with Linear Fit and synthetic flats. I shall just have to persevere :-).

Revision - well I sorted the mosaic gradients from the 2 panels by merging once non-linear. That way it was easier to tame the gradients and match relative brightness (Linear Fit helped). Much happier now!

C&Cs always welcome.

Original
Final
B

Deep Sky Mosaics

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Status	Advanced success
Started	...
PixInsight job	X725D8H6LB9PPU39FP84Z4ZBZLPQGD5G
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	20h58m33s.56
RA (top/left)	21h21m09s.70
RA (top/right)	20h35m48s.59
RA (bottom/right)	20h38m27s.10
RA (bottom/left)	21h18m49s.21

Dec (center)	+67°37′46″.9
Dec (top/left)	+68°55′19″.5
Dec (top/right)	+68°54′00″.8
Dec (bottom/right)	+66°09′44″.7
Dec (bottom/left)	+66°10′58″.3

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NGC7023 Iris Nebula, Ghost Nebula and LBN468

NGC7023 Iris Nebula, Ghost Nebula and LBN468

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NGC7023 Iris Nebula, Ghost Nebula and LBN468

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