NGC 7635: Bubble Nebula in Cassiopeia

Equipment: Celestron C9.25 EdgeHD telescope (2350mm at f/10); FLI 6303E CCD Camera; 3nm narrowband emission-line filters

Imaged from a backyard observatory from 9/16-9/18/20. FOV = 19' x 15'

Exposures: 6.75 Ha (green); 2.25 hrs of OIII (blue) and SII (red) for total of 11.25 hrs. For more on NGC 7635 click here