Narrowband image of NGC 7635 or the Bubble Nebula. Diffuse nebula in the constellation Casseopeia

Telescope/camera: Takahashi TOA130S with a QSI532 ws M1, FS60SV and ST402ME as guider.
Mount: Takhashi NJP Temma 2 on a PWT Pinnacle pier.
Exposure: Ha(red):SII(green):OIII(blue)5.5hrs:4.5 hrs:5.5hrs, All taken with 30 mins subexposure
Astrodon Narrowband Filters
Software: CCD Autopilot 4.0, MaximDL, CCD Stack and Photoshop CS2

Taken on several nights between August 20 to Sept 1st 2008 in Jackson, Ohio