Telescope: Celestron 9.25"
Schmidt-Cassegrain at f/6.3
Focus: Prime focus
Filter: Astronomik Hydrogen Alpha
Mount: Vixen GPD with Skysensor2000
Camera: Modified Canon EOS 300D, at
Guiding: 700mm refractor guidescope,
SAC7 camera, autoguided with Guidedog software
Exposure: Total 75 mins (25 x 180s),
2 x 54 mins (18 x 180s) and 36 mins (12 x 180s)
Date: 9th & 19th March, 19th & 30th
Processing: RAW file conversion,
Offset and Dark subtraction, flat fielding, registering and stacking done in
IRIS. Only the Red channel was used. Curve stretching and mosaic in Photoshop CS. Noise reduction in Neat Image.