• Messier 57 in Lyra, the Ring Nebula
    • M57 in Lyra, Ring Nebula
  • NGC 5720, M57 or the Ring Nebula, is a planetary nebula in Lyra.
  • The spiral galaxy IC 1296 is faintly visible at about 5 o'clock.
  • Date:  14 Octomber 2022
  • FOV:  cropped to 12.8' × 8.5'; the angular size of M57 is about 1.4'
  • Telescope:  Orion 180mm Mak-Cass (2700mm, f/15)
  • Guiding:  ZWO ASI120MM mini mono guide camera,
  • Stellarvue F050G 50mm guide scope
  • Computer:  ASIair pro Raspberry Pi
  • Mount:  iOptron CEM40
  • Camera:  ZWO ASI071MC Pro Cooled (-10°C) Color CMOS gain 240
  • Filter:  none
  • Stacking:  Twenty-four 240 second frames using Deep Sky Stacker
  • Total Time:  1 hour 36 minutes
  • Processing:  GIMP – levels, curves, saturation, color balance, contrast,
  • value propagate black to reduce star size, and sharpen
  • Location:  Darling Hill Observatory near Vesper, NY