M57, Ring Nebula




Crop at full resolution (0.60"/pixel)

  • Exposure time: 180 minutes (9x 1200s)
  • Processing: Nebulosity 2.3 (pre-processing, stacking); RegiStax 5.1 (waveletting) and Adobe Photoshop CS4 (post-processing)
  • Lens/telescope: Vixen VMC260 (10.2") Cassegrain at f/7.1 with Baader H-alpha 7 nm narrowband filter
  • Camera: SBIG ST-8300M (T: -23 degrees Celsius)
  • Mount: Astro-Physics Mach1 GTO (guide rate: 1x, PEM activated)
  • Guiding: TS OAG + SX Lodestar + PHD (settings other than default: RA Aggressiveness 70; RA Hysteresis 20; Min. motion (pixels) 0.35)
  • Location: Zoetermeer, The Netherlands
  • Date: May 20 - 21, 2010

CLICK HERE TO GO TO THE THUMBNAIL PAGE