Scope: Televue NP127is @ native f/5.4 (660mm focal length)
Mount: Losmandy G11 + Gemini L.4
CCD Camera: Atik 490EX @ 1×1 binning (1.1 arc-sec/pxl)
Guide: TV Pronto + Loadstar
NGC7635 Bubble Nebula in Cassiopeia is an emission nebula created by the stellar wind from a massive hot star at its center. Radiation from the star also illuminates the surrounding gas cloud causing it to glow.