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IC434 / B33 - The Horsehead Nebula

 

 

 

 

 

 

 

 

 

 

 

 

  Object The Horsehead Nebula (IC434 / B33), in Orion (with reflection nebula NGC2023 at lower left)
  Telescope (Photo) Celestron 8" SCT OTA  @  f/6.3 on Celestron CGEM Mount
  Telescope (Guiding) Celestron 8" SCT OTA  @  f/6.3 on Celestron CGEM Mount (off-axis)
  Camera (Photo) SBIG ST8300M monochrome CCD
  Camera (Guiding) Starlight Express Lodestar w/ PHD Guiding
  Exposure Detail LRGB combination:   
  Luminance: excluded-average combination of 20 images ( binned 1x1) at 300 seconds   
  Red:   excluded-average combination of 12  images (binned 2x2) at 150 seconds   
  Green:   excluded-average combination of 12 images (binned 2x2) at 150 seconds
  Blue:   excluded-average combination of 12 images (binned 2x2) at 150 seconds
RAW file conversion, full calibration (flat, dark, bias, flat-dark), and initial image processing using ImagesPlus 3.83; final image processing using Photoshop CS3
  Location Private Property at Chiefland Astronomy Village, Florida
(N29.406, W82.860)
  Date 12/5/10