• The Cygnus Loop (the Veil Nebulae)
    • Cygnus Loop
    B72 Annotated image
  • The Cygnus Loop is a famous supernova remnant.
  • It includes NGC 6960 (the Western Veil Nebula or the
  • Witch's Broom), NGC 6979 (Pickering's Wedge),
  • and NGC 6992 (the Eastern Veil nebula).
  • Hover over the picture for an annotated version
  • Date:  23 November 2022 and 4 August 2024
  • FOV:  Approximately 4° 23' × 2° 55'; the angular size of NGC 6960 is just over 90'
  • Telescope:  Askar FRA300 pro (300mm f/5 Petzval)
  • Guiding:  ZWO ASI120MM mini mono guide camera,
  • ZWO 30F4 30mm mini guide scope
  • Computer:  ASIair pro Raspberry Pi
  • Mount:  iOptron CEM40
  • Camera:  ZWO ASI071 Pro Cooled (-10°C) Color CMOS 23 Nov 2022
  • 4.78 μm, 2.303 arcsec/pixel, Optolong L-eNhance filter
  • Camera:  ZWO ASI6200MC Pro Cooled (-10°C) Color CMOS 8 Aug 2024
  • 3.76 μm, 2.594 arcsec/pixel, Optolong UV-IR cut filter
  • Frames:23 Nov 202238 × 240 seconds × 240 gain,
  • 8 Aug 202489 × 240 seconds × 100 gain,
  • Stacking:  one hundred twenty-seven 240 second frames using Pixinsisght
  • Total Time:  8 hours 28 minutes
  • Processing:  PMath ScrBlend 23 Nov 2022 and 8 Aug 2024 → CygnusLoop,
  • MStr, GHS, HST, PMath 0.5*GHS + 0.3*HST + 0.2*MStr → PM,
  • PMath HDR7i + HDR8i, Sat, Scale
  • Location:  23 November 2022 at Darling Hill Observatory near Vesper, NY and
  • 8 August 2024 at Cherry Springs State Park near Coudersport, PA