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 15 ± 5 M☉ SAO 20575 (BD+60 2522). 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.
[Quoted from SEDS]

LRGB 45_15_15_15 (9x300L, 3x300R, 3x300G, 3x300B)
no guiding, 5 DARKS and 10 BIAS's for each channel, no FLATS
TEC180FL, AP1200GTo, FLI ML8300, FLI CFW-2-7 Filter Wheel + Baader 50mm Filter Set
Sequence Generator Pro ; PixInsight
special thanks to Sedat Bilgebay for help during image aquision and later processing
image cropped to 3x2 aspect ratio