• NGC 7635 and M52 in Cassiopeia
    • B72
    B72 Annotated image
  • NGC 7635, the Bubble Nebula, and M52, an open cluster in Cassiopeia.
  • The zombie star nova V1405 Cas 2021 is 5600 ly from us.
  • Hover over the picture for an annotated version
  • Date:  28 August 2021 and 3 July 2022
  • FOV:  approximately 90' × 60'; the distance between them is about 30'
  • Telescope:  Stellarvue SVX102T + SFFX-1 flattener (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
  • Pixel size:  4.78 μm
  • Resolution:  1.339 arcsec/pixel
  • Filter:  Baader Light Pollution Moonglow filter with IR cut (10 frames)
  • and Optolong L-eNhance narrow dual band (32 frames)
  • Stacking:  Forty-two 240 second frames using Deep Sky Stacker
  • Total Time:  2 hours 48 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,
  • HDR644TiLm, Sat, PMath ~(~Stars*~Starless) → Blend, scale
  • Location:  Darling Hill Observatoryt near Vesper NY (28 August 2021)
  • and Canandaigua/Rochester KOA near Farmington, NY (3 July 2022)