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M18 - Open Star Cluster













  Object Open Star Cluster (M18), in Sagittarius
  Telescope (Photo) Meade LX200GPS 12 SCT @ f/6.3
  Telescope (Guiding) Meade ETX-90 OTA Piggybacked to Meade LX200GPS 12" SCT
  Camera (Photo) Canon 20Da DSLR
  Camera (Guiding) Meade DSI Pro II w/Autostar Envisage
  Exposure Detail Median combination of 8 images at 60 seconds each, ISO400; RAW file conversion, full calibration (bias, flat, dark), and initial image processing using ImagesPlus 2.82; final image processing using Photoshop CS3
  Location Caesar Creek State Park, Ohio (N39.513, W84.020)
  Date 07/07/07