NGC-7635 (The Bubble nebula) in Cassiopeia

Luminance information 150 minute exposure on hypered Tech Pan film 10" f/6 Newtonian telescope Exposure date: 9-30/10-1-94

(Sean's)RGB information SBIG ST-237 CCD image-70:30:24:36 minutes RRGB TeleVue 85mm refractor