BUBBLE NEBULA  NGC7635

NGC 7635, also called the Bubble Nebula, Sharpless 162, or Caldwell 11, is an emission nebula in the constellation Cassiopeia. It lies close to the direction of the  open cluster M52. The "bubble" is created by the stellar wind from a massive hot young central. 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.

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Equipment:

Telescope: SW ED80 Pro

Guide Scope: SW ST80 with Orion Starshoot

Mount: NEQ6 Pro

Camera: Atik 460ex Mono

Filter Wheel: Atik FW2

Filters: Baader Narrowband

Ha  12 x 1200 seconds

Oiii 11 x 1200 seconds

Sii  12 x 1200 seconds

Total Integration 11 hours 40 minutes