Perhaps an unconventional look for the bubble. The reddish tones are due to the hydrogen, while the white/blue wispy stuff is sulphur. NGC 7635, also called the Bubble Nebula, Sharpless 162, or Caldwell 11, is a H II region emission nebula in the constellation Cassiopeia. 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 [description lifted from wikipedia.org] Ha acquired on Oct 13 and 14, 2013 from my backyard SII acquired on Oct 30 and 31. Ha: 28 x 30m SII : 28 x 30m Total exposure time: 28 hours Main Camera: QSI 583 WSG Guide Camera: SXV Lodestar (on OAG) Mount: Astro-Physics Mach 1 Scope: Celestron EdgeHD 8" (FL: 2032 mm) SXV Adaptive Optics Image Aquisition software MaximDL Registed, Calibrated and Stacked in MaximDL Post Processed with PixInsight 1.8 and Photoshop CS6

Ha and SII acquired from my backyard in Nov 2013. - 12 x 30m subs in Ha (5nm) - 20 x 30m in SII (3nm) total exposure time: 16 hours. Main Camera: QSI 583 WSG Guide Camera: SXV Lodestar (on OAG) Mount: Astro-Physics Mach 1 Scope: Explore Scientific 102 ED Effective focal length: 698 mm Image Aquisition software MaximDL Registed, Calibrated and Stacked in MaximDL Post Processed with PixInsight 1.8 and Photoshop CS6