About this Object:
NGC 7635, also known as the Bubble Nebula, Sharpless 162, or Caldwell 11, is an 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, 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 BD+60°2522 is thought to have a mass of about 44 M☉.

About this photo:
Location: Spring Hill Observatory Stow Massachusetts
Telescope: Astrotech RC8 @ F8
Mount: CGEM
Guiding: Orion StarShoot AutoGuider / OAG
Camera: ZWO 294MC Pro
Exposure: 20 x 300 sec (100 min.)
Acquisition: SharpCap v3.2 Darks, Flats
Processing: PixInsight v. 1.8
Post-processing: Adobe Photoshop
Date(s): June 16, 2020

NGC 7635 The Bubble Nebula
20 Frames x 5 min = 100 Min
ZWO 294MC
Astrotech RC8