RC-Astro | Spiral Galaxy NGC 891

Spiral Galaxy NGC 891

Technical Details
Optics:	14" f/10 RCOS Ritchey-Chrétien Cassegrain at f/7,Takahashi FRC-300 focal reducer.
Camera:	SBIG ST-10XME, CFW-8.
Mount:	Astro-Physics AP1200GTO.
Filters:	SBIG Standard LRGB.
Dates/Times:	21, 24 November 2003.
Location:	my backyard observatory in Austin, Texas.
Exposure Details:	LRGB = 180:30:30:60 minutes (5-minute sub-exposures).
Processing:	MaxImDL (combine), CCDSharp (deconvolution), Photoshop (levels, curves, etc.), ImagesPlus (deconvolution, smoothing).