Facts
NGC 7635, also called the Bubble Nebula, Sharpless 162, or Caldwell 11, is a H II region 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 magnitude young central star. 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. It was discovered in 1787 by William Herschel. The star SAO 20575 or BD+602522 is thought to have a mass of 10-40 Solar masses. (Wikipedia)
Date: 13.12.2014 (Ha from 12.10.14)
Location: Backyard, Asker, NO
Camera: SBIG STT-8300 Mono CCD
Optics: Celestron SCT 8″ 1260mm f6,3
Exposure: Ha (6×20 min 2x2binned), RGB (8×5 min 3x3binned)
Guiding: MaximDL, SBIG Selfguiding FW
Post processing: MaximDL, Photoshop CS5
Comments: Processed using only images from two nights. Another 17 images in LRGB is available for another edit.
Date: 12.10.2014
Location: Backyard, Asker, NO
Camera: SBIG STT-8300 Mono CCD
Optics: Celestron SCT 8″
1260mm f6,3
Exposure: Ha (6×20 min 2x2binned)
Guiding: MaximDL, SBIG Selfguiding FW
Post processing: MaximDL, Photoshop CS5
Comments: Work in progress. 84% illuminated moon.
Håvard's Observatory 