Date: 10/25/2011
Target: NGC7635 - Bubble Nebula
Telescope: 8" f/4.9
Camera: Canon 40D (modified, cooled)
Filter: IDAS LPS
Exposures: 49x300s (4h) @ ISO1600
Framing: North is Up, Full Frame,
Center (RA, Dec): (350.437, 61.282)
Radius: 0.749 deg
Location: Mocksville, NC
Seeing: 3/5
Transparency: 4/5
Ambient Temp: 40F
Start Time: 10:15PM
End Time: 2:30AM
Captured with BackyardEOS, stacked using DeepSkyStacker, processed in Photoshop.

Anacortes Picture of the Day, November 2, 2011

Winner, Astrophoto Gallery October 2011

Winner, Digital-Astro Monthly Challenge October 2011

From Wikipedia:
NGC 7635, also called the Bubble Nebula, Sharpless 162, or Caldwell 11, is a H II region[2] emission nebula in the constellation Cassiopeia. It lies close to the direction of the open cluster Messier 52. The "bubble" is created by the stellar wind from a massive hot, 8.7[2] magnitude young central star, the 15 ± 5 M☉[4] SAO 20575 (BD+60 2522).[7] The nebula is near a giant molecular cloud which contains the expansion of the bubble nebula while itself being excited by the hot central star, causing it to glow.[7] It was discovered in 1787 by Friedrich Wilhelm Herschel.[6] The star SAO 20575 or BD+602522 is thought to have a mass of 10-40 Solar masses.