Sh2-206 & NGC 1491 #1 (Molly Wakeling)

Celestial hemisphere: Northern · Constellation: Perseus (Per) · Contains: HD232871 · HD232875 · HD24775 · HD25515 · HD25787 · LBN 704 · LBN 705 · LBN 706 · NGC 1491 · PGC 14457 · PGC 168463 · PGC 168466 · PGC 2798535 · PGC 2798540 · Sh2-206

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Sh2-206 & NGC 1491 #1

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Sh2-206 & NGC 1491 #1

Processed another image from my 4-inch refractor in between other tasks (and maybe a bit too long this morning after breakfast...)

The main bright part of it in the center is NGC 1491, and the rest of the area makes up Sh2-206. It's 10,000 lightyears away in the constellation Perseus. The blue-green areas are largely hydrogen gas; the reddish sections contain sulfur, and the more densely blue areas have higher concentrations of oxygen. These gases (and others) are energized by several massive stars that emit strongly in UV light. The energetic stellar wind from these stars is responsible for carving out the central cavity and shaping the gas and dust in the area. One of the main stars responsible is BD +50 886, which you can see at the center of the brightest region there. There's also a little puff of hydrogen & oxygen in the upper left corner I thought was interesting. I'm not sure if it belongs to this nebula or not.

I managed to get an astounding 42.5 hours on this target in less than two months -- I got a lot of good subframes each night. Pretty happy with how this came out. The updated ColorMask script with the color circle displayed makes it easier to hone in on a specific color region to tweak.

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Status	Advanced success
Started	...
Astrometry.net job	8989446
PixInsight job	P3CQC0ETIJZ8988S4EIC3AOAVCATTDHC
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	04h03m43s.97
RA (top/left)	03h57m53s.71
RA (top/right)	04h09m32s.98
RA (bottom/right)	04h09m42s.50
RA (bottom/left)	03h57m46s.80

Dec (center)	+51°04′13″.10
Dec (top/left)	+50°28′01″.4
Dec (top/right)	+50°27′44″.7
Dec (bottom/right)	+51°39′15″.1
Dec (bottom/left)	+51°39′37″.9

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Sh2-206 & NGC 1491 #1

Sh2-206 & NGC 1491 #1

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Sh2-206 & NGC 1491 #1

Sh2-206 & NGC 1491 #1

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