This one was very very tough. I had some very bad gradients from light pollution, upper atmosphere clouds and a red LED that somehow leaked light into the scope causing some nasty images in the core frame. I’m not sure if I’m happy with the colors or not so I may come back to this one shortly.
Image Location and Date: SDAA dark sky site at Tierra Del Sol on October 22nd and 29th, 2011
Object: M31 Great Andromeda Galaxy in Andromeda
Mount: Orion Atlas EQ-G
Imaging scope: Omni XLT 150mm Newtonian
Imaging FL: 750mm
Imaging focal ratio: f5
Imaging camera: Modified Canon 350D
Lights: 14 x 600sec @ ISO 800 per frame (7 hours total)
Calibration: Darks
Guide scope: Antares 8×50mm finder with Orion StarShoot Auto Guider
Other details: guiding with PHD, captured with APT, stacked in Deep Sky Stacker, merged in Photoshop, processed in PixInsight and back to Photoshop for final color adjustment.