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M20 - The Trifid Nebula













  Object The Trifid Nebula (M20), in Sagittarius
  Telescope (Photo) Celestron 11" EdgeHD SCT OTA w/ Celestron EdgeHD 0.7 Focal Reducer on Losmandy G11 Mount
  Telescope (Guiding) Orion EON 80mm ED Refractor @ f/12.5 (f/6.25 w/2x Powermate) on Losmandy G11 Mount 
  Camera (Photo) Canon 50Dh DSLR (Hutech Modified)
  Camera (Guiding) Meade DSI Pro III w/ PHD Guiding
  Exposure Detail Excluded-average combination of 22 images at 300 seconds each (captured using ImagesPlus 4.50), full calibration (bias, dark, flat, flat-dark), and initial image processing using ImagesPlus 4.50A; final image processing using Photoshop CS5.1
  Location Cincinnati Astronomical Society's Dark-Sky Site (Adams County, Ohio) (N38.876, W83.464) 
  Date 06/15/12
  Comments Above image is first light through new Celestron EdgeHD 0.7 focal reducer.  Also first use of Optec TCF-Si temperature-controlled focuser.  Image is cropped only by a few pixels at right and top, to remove dithering effects.