NGC 281, Pacman Nebula


  • Exposure time: 160 minutes (20 minute 2x2 binned sub-exposures)
  • Processing: Nebulosity 2.3 (pre-processing, stacking & DDP); Adobe Photoshop CS4 (post-processing)
  • Lens/telescope: Vixen VMC260 (10.2") Cassegrain at f/11.5
  • Image scale: 0.74 arcseconds per pixel (F = 3000 mm at 10.8 micron pixels)
  • Camera: SBIG ST-8300M (T: -20 degrees Celsius) with Baader H-alpha 7 nm narrowband filter
  • Mount: Astro-Physics Mach1 GTO (guide rate: 1x, PEM activated)
  • Guiding: TS OAG + SX Lodestar + PHD
  • Location: Zoetermeer, The Netherlands
  • Date: October 16 - 17, 2010

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