• NGC 3992 or Messier 109 in Ursa Major
    • M109
    Annotated image
  • Messier 109, The Vacuum Cleaner Galaxy.
  • Also shown are PGC 37735 and NGC 3953.
  • Hover over the image for an annotated view.
  • Date:  4 March 2024
  • FOV:  approximately 108' × 72'
  • Telescope:  Stellarvue SVX102T + SFFX-1 (739mm, 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 gain 240
  • Pixel size:  4.78 μm
  • Resolution:  1.334 arcsec/pixel
  • Filter:  none
  • Frames:  sixty-seven 240 second subs
  • Total Time:  4 hours and 28 minutes
  • Calibration:  20 flats, 20 dark flats, and 20 darks
  • Processing:  Pixinsight – SPCC, GradCorr, DBE, SPCC, BlurXT, NoiseXT,
  • GHS, HST, MStr, PixelMath MStr + GHS + HST → PM,
  • PM + Bkg max, Sat, DynCrop/Scale
  • Location:  Darling Hill Observatory near Vesper, NY