Russell Croman Astrophotography  

 

 

Spiral Galaxy NGC 891


 

Technical Details

Optics:14" f/10 RCOS Ritchey-Chrétien Cassegrain at f/7,Takahashi FRC-300 focal reducer.
Mount:Astro-Physics AP1200GTO.
Camera:SBIG ST-10XME, CFW-8.
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).