• Arp 317, The Leo Triplet
  • M44
    Annotated image
  • The galaxies M65, M66, and NGC 3628 comprise the Leo Triplet
  • or the M66 Group which is about 35 Mly from us.
  • Hover over the picture for an annotated version
  • Date:  26 March 2023 and 9 May 2023
  • FOV:  cropped to 90' × 60'; the angular size of the Hamburger
  • Galaxy, NGC 3628, is about 14' × 3.6'
  • 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:  ZWO AM5
  • Camera:  ZWO ASI071MC Pro Cooled (-10°C) Color CMOS with gain 90
  • Filter:  Baader Light Pollution Moonglow filter with IR cut
  • Stacking:  74 frames (26 March 2023) and 40 frames (9 May 2023), all 114 frames
  • 240 seconds with dark flats, darks, and flats preprocessed in Pixinsight
  • Total Time:  7 hours 36 minutes
  • Processing:  Pixinsight – SPPC, DBE, SPCC, BlurXT, NoiseXT, DynCrop → Linear
  • MStr, GHS, HST, PMath MStr + GHS + HST → Stars, Sat,
  • StarXT, MStr, GHS, HST, PMath MStr + GHS + HST → Starless,
  • HDR8464PhLm, Sat, PMath ~(~Stars*~Starless) → Blend, scale
  • Location:  Darling Hill Observatory near Vesper, NY