Rosette Nebula (NGC-2237) (Joel Shepherd)

Celestial hemisphere: Northern · Constellation: Monoceros (Mon) · Contains: 12 Mon · NGC 2237 · NGC 2238 · NGC 2239 · NGC 2244 · NGC 2246 · Rosette nebula · Sh2-275 · The star 12Mon

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Rosette Nebula (NGC-2237)

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Rosette Nebula (NGC-2237)

Subject: The Rosette Nebula (NGC-2237), an emission nebula in Monoceros, approximately 130 light-years across and 5000 light-years distant. X-ray imaging has revealed around 2500 young stars forming in the nebula's gasses and molecular clouds.

Capture notes: In what must be a first, Seattle had clear skies, a new moon and steady air on the night of the winter solstice. It was magical. Used the 3nm O-iii filter for the first time that night and am pleased with the results (versus the 5nm). A few nights later when I captured the Ha, it started clear but as the night progressed, thin high clouds started forming and thickening. I was still getting signal when I called it, but not much. Am happy the Ha turned out as well as it did.

Processing: Tonemapping of the Ha and O-iii stacks, luminance from the Ha stack with the O-iii tone map added in. Palette is basically HOO, but I boosted the Ha and O-iii data a bit for the red and blue channels, and the green has a little bit (20%) of Ha in the mix.

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Status	Advanced success
Started	...
Astrometry.net job	1884501
PixInsight job	7W7R92AP09PMM0O0AH3N0BT4XFZTPXAW
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	06h32m03s.21
RA (top/left)	06h28m04s.51
RA (top/right)	06h31m46s.54
RA (bottom/right)	06h36m01s.66
RA (bottom/left)	06h32m19s.73

Dec (center)	+04°57′01″.1
Dec (top/left)	+05°11′54″.9
Dec (top/right)	+03°55′51″.5
Dec (bottom/right)	+04°42′01″.3
Dec (bottom/left)	+05°58′07″.1

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Rosette Nebula (NGC-2237)

Rosette Nebula (NGC-2237)

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Rosette Nebula (NGC-2237)

Rosette Nebula (NGC-2237)

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