Sh2-155 - The Cave Nebula in LRGB+NB help (David Payne)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: LBN 527 · LBN 529 · Sh2-155

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Sh2-155 - The Cave Nebula in LRGB+NB help

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Sh2-155 - The Cave Nebula in LRGB+NB help

I wanted to capture some dark nebulosity and practice getting the full dynamic range out of my pictures. I really worked at stretching so that I didn't blow out my stars trying to bring forward the subtle variations in the background. I could have sharpened around the cave nebula, but it is shrouded in a nebulous "fog" or haze, but I decided to leave it as I saw it.

Original
Final
B

B

Title: Sh2-155 - The Cave Nebula in LRGB+NB, using GHS stretching script

Description: The original processed files used the Pixinsight CT process, being very careful of the stars. This revision used the Generalised Hyperbolic Stretch Script, recently released by Mike Cranfield and myself. Using this script, scretching was a lot easier, ended up with the same, if not better, stars, and brought out signficantly more nebulosity. In addition, the nebulosity on the right, used to seem flat and is now more three dimensional.

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Status	Advanced success
Started	...
Astrometry.net job	4854690
PixInsight job	ROYPCUEP7NEAVNT8R85ZYK692GFTC6F4
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	22h55m49s.943
RA (top/left)	22h57m32s.416
RA (top/right)	22h51m38s.222
RA (bottom/right)	22h54m10s.565
RA (bottom/left)	23h00m01s.667

Dec (center)	+62°29′10″.61
Dec (top/left)	+62°55′45″.88
Dec (top/right)	+62°29′24″.69
Dec (bottom/right)	+62°02′30″.19
Dec (bottom/left)	+62°28′28″.31

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Sh2-155 - The Cave Nebula in LRGB+NB help

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Sh2-155 - The Cave Nebula in LRGB+NB help

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