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William Shaheen | all galleries >> Astronomy - Astronomical objects, images and astronomy related projects >> Astro Images by Subject > Galaxies M66 and M65 in Leo 25-Nov-2009
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Galaxies M66 and M65 in Leo 25-Nov-2009

7 - 10 min. exposures with the Q453HR/QHY8 color CCD camera at Gain 1, Offset 110 (default). Telescope: TEC-140 (980mm, f/7) and no focal reducer, yielding 980mm, f/7; Astro-Tech 2" field flattener. Mount: Losmandy G11. Focused using a Bahtinov focus mask. Post processing: bad pixel removal in Nebulosity2 using 5 dark frames (threshold 238); 43 bias frames and 3 flat frames applied, debayered, aligned, stacked and DDP in ImagesPlus 3.75 (Auto Image Set Processing). Curves and color adjustment in Nebulosity2. NeatImage noise reduction. Final contrast, brightness and slight sharpening in ThumbsPlus. Image cropped from original of 3040 x 2016 to 1916 x 1282.

20091125_M65_Comb-ddpcrv_NeatAdj.jpg


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