NGC 7635 The Bubble Nebula

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. (Wikipedia).

 

Acquisition: 20 & 25/11/16

Chiswick, London, UK.

10.5 Hours total Exposure (SII:Ha:OIII)

9x1800sHa, 9x1200sHa, 4x1200sSII, 5x1200sOIII

SII and OIII bin 2x2

 

Equipment:

T: Takahashi FSQ106ED @ f/8

C: QSI683ws Mono CCD @-30C

F: Astronomik Ha (6nm)

M: Celestron Advanced Vx

G: QHY5-II

Done