IC 1848 (The Soul Nebula) SHO (Chung Hyun Lee)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: HD16429 · HD16506 · HD16759 · HD16778 · HD16894 · HD17086 · HD17087 · HD17114 · HD17356 · HD17505 · HD17520 · HD17688 · HD17911 · HD17971 · HD18152 · HD18294 · HD18326 · HD18337 · HD18352 · HD18458 · HD18473 · HD18749 · HD18766 · HD18767 · HD18877 · HD18963 · HD19009 · HD236986 · HD236989 · HD237000 · And 28 more.

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IC 1848 (The Soul Nebula) SHO

Link to TIFF/FITS: https://www.dropbox.com/s/6tzy9vikuzl98m1/soul_sho_20221012A.tif?dl=0

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IC 1848 (The Soul Nebula) SHO

Link to TIFF/FITS: https://www.dropbox.com/s/6tzy9vikuzl98m1/soul_sho_20221012A.tif?dl=0

Hi, this is the first image that I have shared in Astrobin!
I am a kind of a newbie in astrophotography (I started in March this year), so any comments and suggestions will be appreciated.

I am using RASA 8-inch with 2600mm - pro.
Yes, it is a mono-cam with changing filters manually.
Thanks to the Astrodevice filter drawers, I can use 2600mm with changing the filter as well as adjusting the tilt.
Even with the filter drawer, I caught each SHO image on three different days to obtain better-quality images.

BTW, the left-top corner should not be blue, in my opinion.
I guess this is because my Oiii image has some problems.
The flat frame for Oiii can't remove the vignetting at that part.

AstroPhotographers of South Korea
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Status	Advanced success
Started	...
Astrometry.net job	6422498
PixInsight job	Y91F3QS43S2D2KNTIWFZMF2AQ9EJC0ID
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	02h54m34s.54
RA (top/left)	02h40m28s.12
RA (top/right)	03h08m12s.11
RA (bottom/right)	03h07m48s.13
RA (bottom/left)	02h41m49s.81

Dec (center)	+60°22′17″.4
Dec (top/left)	+61°23′10″.2
Dec (top/right)	+61°28′22″.7
Dec (bottom/right)	+59°16′07″.3
Dec (bottom/left)	+59°11′12″.3

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IC 1848 (The Soul Nebula) SHO

IC 1848 (The Soul Nebula) SHO

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IC 1848 (The Soul Nebula) SHO

IC 1848 (The Soul Nebula) SHO

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