Instrument

12.5" RCOS @  ~f/9 (2880 mm fl) 0.643 arcsec / pixel.  Shown resampled to 1.90 arcsec / pixel.

Mount

Paramount ME

Camera

SBIG STL-11000 w/ internal filter wheel, AstroDon Filters

Acquisition Data

4/20/2009 to 4/27/2009  Chino Valley, AZ

Exposure

Lum    375 min (25 x 15 min, bin 1x1)

RGB    315 min ( 7 x 15 min each, bin 1x1)

Software

CCDSoft, CCDStack, Photoshop CS w/ the Fits Liberator plugin, Noel Carboni's actions and Russ Croman's Gradient Exterminator

CCDStack to register, normalize, data reject, combine and luminance sharpen.

PhotoShop for the color combine.

Comment

North is to the top.

NGC 5907, also known as the Splinter or Knife Edge Galaxy. is located in the constellation Draco at a distance of about 40 million light-years.

Grand tidal streams of stars, left from an ancient orbiting satellite galaxy surround NGC 5907. I was not able to image the streams, maybe 30 minutes sub exposures will to the job.