Telescope: Orion 80ED apochromatic
refractor at f/7.5
Focus: Prime focus
Filter: Astronomik Hydrogen Alpha
Mount: Vixen GPD with Skysensor2000
Camera: Artemis 285 CCD camera
Guiding: 700mm refractor guidescope,
SAC7 camera, autoguided with Guidedog software
Exposure: Total 50 mins (10 x 300s)
Date: 20th Jan 2006
Offset and flat fielding, registering and stacking done in
IRIS. No dark frames. Curve stretching and Levels in Photoshop CS2.
Correction of slight trailing of stars. Noise reduction in Neat Image.
One of the first images with the ART285
camera. Good transparency, but windy.