NGC7635 The Bubble Nebula  
Scope: Deep Sky Instruments RC10c 254mm @ f/7.4 Corrected Ritchey Chretien  
Camera: Q453HR CCD Labs- One Shot Color Camera 
Total Exposure: 7.8 hours 47 x 10 min. unbinned
September 2009: Chico, California, USA 
Comments: NGC 7635, also called the Bubble Nebula, 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.