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M100 Galaxy

M100 galaxy. 20 frames x 2 minutes exposures @ISO3200, using Celestron Nexstar 8SE on CG-5, Starizona field flattener, astromodded EOS550, CLS clip filter, Moonlite focusser, guided with Celestron guidescope with SPC900C guide camera and PHD guiding. BackYard EOS camera control, DeepSkyStacker stacking. Final image processing for levels and gamma in Photoshop, spending a bit more effort than in the widefield shot. Hints of stucture in the spiral arms.

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Uploaded on April 4, 2013
Taken on April 5, 2013