Image captured Mon, 8 Jan 2007 from my driveway in the Dallas suburb of Rockwall, TX. Equipment was SkyWatcher ED-80 Pro on EQ-6 Pro mount, SBIG ST2000 with CFW-8 and Astrodon Ha/Sii/O3/Lum filters. Set point was -20 deg C. Cumulative exposure time was greater than 2:13. Captured using MaxIM DL finished in Photoshop. The Rosette Nebula is a vast cloud of dust and gas, extending 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 nebulas material, and the brightest of which make the nebula shine by exciting its atoms to emit radiation. The nebula is approximately 130 light years in diameter. Burnham quotes a mass estimation of 10,000 (Minkowski 1949) to 11,000 (Menon 1962) solar masses, so it is one of the more massive diffuse nebulae.