Instrument

12.5" RCOS @  ~f/9 (2880 mm fl) 0.643 arcsec / pixel.  Shown resampled to ~3.4 arcsec/pixel.

Mount

Paramount ME

Camera

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

Acquisition Data

5/16/2008  Chino Valley... with CCDSoft via CCDAutoPilot3

Exposure

H-Alpha    90 min.  (3 x 30 bin 1x1)

Software

CCDSoft, CCDStack, Photoshop CS w/ the Fits Liberator plugin, and Noel Carboni's actions.

CCDStack to normalize, data reject & combine.

Comment

North is to the top.