• Arp 85 in Canes Venatici, the Whirlpool Galaxy
    • M51
    M51 Annotated image
  • Arp 85, NGC 5194 and NGC 5195, M51a and M51b,
  • or the Whirlpool Galaxy in Canes Venatici.
  • Several small galaxies are incidental captures in the photo.
  • Hover over the picture for an annotated version
  • Date:  4 May 2022
  • FOV:  approximately 45' × 30'; the major axis of M51 is about 11'
  • 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 with gain 240
  • Filter:  Baader Light Pollution Moonglow filter with IR cut
  • Stacking:  Twenty-five 240 second frames using Deep Sky Stacker
  • Total Time:  1 hour 40 minutes
  • Processing:  Pixinsight – SPPC, DBE, SPCC, BlurXT, NoiseXT, DynCrop,
  • MStr, GHS, HST, PMath MStr + GHS + HST, HDR5, Sat, Scale
  • Location:  Selkirk Shores State Park near Pulaski, NY