• NGC 5981, NGC 5982, and NGC 5985
    • NGC 5981, NGC 5982, and NGC 5985
    Annotated image
  • The Draco Triplet of galaxies is comprised of a
  • face-on spiral galaxy (NGC 5985),
  • an elliptical galaxy (NGC 5982),
  • and an edge-on galaxy (NGC 5981).
  • Hover over the picture for an annotated version
  • Date:  14 and 19 July 2023
  • FOV:  Cropped to approximately 50' × 33'; the major axis of NGC 5985 is about 5.5'
  • Telescope:  Stellarvue SVX102T + SFFX-1 (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
  • Filter:  in camera UV/IR cut
  • Stacking:  Thirty-seven 240 second frames gain 0 (14 July) and
  • Forty-one 240 second frames gain 90 (19 July) using Pixinsight
  • Calibration frames:  20 dark, 20 flat, 20 dark flat for each session
  • Total Time:  5 hours 12 minutes
  • Processing:  Pixinsight – SPCC, DBE, BlurXT, NoiseXT, MStr, GHS, HST,
  • PixelMath MStr + GHS + HST, HDR5, Bkg, StarXT,
  • Bill Blanshan Star Reduction, Sat, Scale
  • Location:  Sandy Creek State Park boat launch near Henderson, NY (37 frames)
  • and Darling Hill Observatory near Vesper, NY (41 frames)