NGC 7635, The Bubble Nebula Constellation: Cassiopeia
   
Telescope: 6" f12 Refractor, ST-2000XCM  CCD Camera Date: November 4th, 5th, 6th and 7th, 2009
   
Subexposures: 20 minutes x  15 Total Exposure Time: 5 Hours
   
Distance: 11,000 light-years  Bubble Diameter: 10 Light-years