Rosette Nebula

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Description
Diffuse Nebula
06h 32m 20.s +5° 03'
20 X 10 minute frames with 20 flats and darks ISO 1600.
Canon 350D modified by Hap.
Orion Atlas mount Guided with Astro IIDC through Meade SN-6" with I.S. DMK 21AF04.AS
Nebulosity for capture and stacking, Photoshop CS2 for post processing
Transparency , Seeing , Temperature +15 °F
Discovered by John Flamsteed about 1690. The cluster and nebula lie at a distance of some 5,200 light years from earth and measure roughly 130 light years in diameter.
The Rosetta Nebula is a vast cloud of dust and gas, extending over an area of more than 1 degree across, or about 5 times the area covered by the full moon. Its parts have been assigned different NGC numbers: 2237, 2238, 2239, and 2246. Within the nebula, open star cluster NGC 2244 is situated, consisted of the young stars which recently formed from the nebula's material, and the brightest of which make the nebula shine by exciting its atoms to emit radiation.
Orion 80ED, WO 0.8 FR, with Astronomik CLS Filter
Massapoag Pond Observatory Lunenburg, MA - Jan. 11-12 2008 @ 7:00 PM EST
Notes
Rosette Nebula NGC 2237
Rosette_1_08