Daniel Pasternak 4 Nov 2015g

NGC 7635, also called the Bubble Nebula, Sharpless 162, or Caldwell 11, is a H II region[1] 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[1] 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 William Herschel.[5] The star SAO 20575 or BD+602522 is thought to have a mass of 10-40 Solar masses.

 

en.wikipedia.org/wiki/NGC_7635

 

Distance from Gaia (earth) 11,000 light years away

Magnitude 10.0

Dimensions 15′ × 8’

 

Canon 450d bought used for $99.00: I removed the 2 filters from inside the camera making it a full spectrum camera. LPS-2 light pollution filter.

 

CGEM-DX mount / C-11 in Hyperstar Mode F/2

 

20 lights 30 seconds each, 5 darks, 25 bias, 1 old flat from last year. Stacked in Deepsky stacker and tweaked in Photoshop.

Done