Date: 11/16//2012
Description: NGC 7635, also called the Bubble Nebula, is a H II region emission nebula in the constellation Cassiopeia. It lies close to the direction of the open cluster Messier 52. The "bubble" is created by the stellar wind from a massive hot, magnitude young central star. [Ref: WikiPedia]
Sky Conditions:
Clear sky, medium - urban light pollution
FWHM: 3.0 - 3.5 arc sec/pixel
Imaging:
Exposure: 90 min (H-alpha, 6 x15min) at 2x2 bin using h-alpha filter
Guiding: 10 sec at 2x2 bin using NOAG
Equipment:
SBIG STF8300M CCD (RGB filters)
AT10RC at F8
Starlight Focuser
NOAG w/SBIG ST-i guide camera
AP1200 mount
SW:
Maxim DL V5, FocusMax, Robofocus, AP ASCOM V2, SkyX, Photoshop CS4 (using Astro-Tools deep space noise reduction) - calibration with darks, flats, bias, and auto gradient light removal