• NGC 7293 in Aquarius, the Helix Nebula
  • NGC 7293 in Aquarius, the Helix Nebula
    Annotated image
  • NGC 7293, the Helix Nebula in Aquarius.
  • More recently named the God's Eye Nebula.
  • One of the largest as viewed from and perhaps
  • the closest planetary nebula to our solar system.
  • Date:  23 August 2022, 22 October 2022, and 19 August 2023
  • FOV:  approximately 73' × 49'; the angular size of NGC 7293 is about 25'
  • Telescope:  Stellarvue SVX102T + SFFX-1 flattener (714mm, f/7)
  • 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
  • Pixel size:  4.78 μm
  • Resolution:  1.336 arcsec/pixel
  • Frames:  23 Aug 2223 × 240 seconds × 240 gain, Optolong L-eNhanced filter
  • 23 Aug 2214 × 240 seconds ×   90 gain, Baader Light Pollution filter
  • 22 Oct 2254 × 240 seconds × 240 gain, Optolong L-eNhanced filter
  • 19 Aug 2344 × 240 seconds × 240 gain, Optolong L-eNhanced filter
  • Stacking:  one hundred thirty-five frames using Pixinsight
  • Calibration frames:  20 dark, 20 flat, 20 dark flat for each session
  • Total Time:  9 hours
  • Processing:  Pixinsight – SPCC, DBE, SPCC, BlurXT, NoiseXT, GHS,
  • HDRMST, Sat, Crop
  • Location:  Cherry Springs State Park near Coudersport, PA