• HFG 1 and Abell 6 in Cassiopeia
    • HFG 1 in Cassiopeia
    Annotated image
  • HFG1, above right of center, and Abell 6, just below center,
  • are extremely faint.  They are planetary nebulae that formed
  • when stars approximately the size of our sun died.
  • Hover over the image for an annotated view.
  • Date:  10, 11, and 12 September 2024
  • FOV:  approximately 2° 30' × 1° 40'
  • Telescope:  Stellarvue SVX102T + SFFR.74 reducer/flattener
  • (522.01mm, nominally 528mm, f/5.18)
  • 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 to -10°C
  • Pixel size:  4.78 μm
  • Resolution:  1.884 arcsec/pixel
  • Frames:10 September 202498 × 240 seconds × 90 gain,
  • 11 September 2024108 × 240 seconds × 240 gain,
  • 11 September 2024114 × 240 seconds × 240 gain
  • Filter:  Baader Semi-Apo filter 10 September 2024,
  • Optolong L-Ultimate filter 11 and 12 September 2024
  • Stacking:  Pixinsight – ninety-eight 240 second frames → Stars
  • two hundred and five 240 second frames → Nebulae
  • Total Time:6 hours 32 minutes → Stars,
  • 14 hours 48 minutes → Nebulae
  • Processing:  Pixinsight – SPCC, DBE, SPCC, BlurXT, NoiseXT,
  • Linear → HST, GHS, MStr → Stars
  • Linear → StarXT → Starless, GHS → Nebulae
  • PixelMath ~(~PM*~Nebulae), DynCrop/Scale
  • Location:  Darling Hill Observatory near Vesper, NY