The Checkmark Nebula (VdB 158) ✓ (Thomas Gaffney)

Celestial hemisphere: Northern · Constellation: Andromeda (And) · Contains: HD222104 · HD222155 · HD222570 · HD222590 · LBN 534 · PGC 2312098 · PGC 2345903 · PGC 2346141 · PGC 2346222 · PGC 2350153 · PGC 2355111 · PGC 2356426 · PGC 3087415 · PGC 71916 · PGC 72069 · PGC 91812 · PK110-12.1 · VdB158

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The Checkmark Nebula (VdB 158) ✓

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The Checkmark Nebula (VdB 158) ✓

I came across John Dziuba's awesome picture of this nebula https://www.astrobin.com/glfh5q/E/ and I immediatley wanted to image it myself. I realized that I had a perfect field of view with my focal reducer in place so I wanted to image it before I switched back to my field flattener. I collected this data over 4 consecutive clear new moon nights. Really cool region of the sky that I didn't even know about. The planetary nebula pk110-12.1 and lots of tiny galaxies were also a fun surprise. Just managed to crack 30 hours.

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Title: PI Annotated

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Status	Advanced success
Started	...
PixInsight job	0WBTYW8Z388FYW8Z6V2N6JD9184FZ5Y2
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	23h40m03s.27
RA (top/left)	23h37m02s.100
RA (top/right)	23h35m14s.51
RA (bottom/right)	23h42m56s.80
RA (bottom/left)	23h45m02s.53

Dec (center)	+48°56′19″.8
Dec (top/left)	+49°59′10″.5
Dec (top/right)	+48°06′07″.7
Dec (bottom/right)	+47°53′11″.3
Dec (bottom/left)	+49°45′44″.8

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The Checkmark Nebula (VdB 158) ✓

The Checkmark Nebula (VdB 158) ✓

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The Checkmark Nebula (VdB 158) ✓

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