• IC 434 and NGC 2024 in Orion
    • Horsehead Nebula
    Annotated image
  • IC 434, the Horsehead Nebula, and
  • NGC 2024, the Flame Nebula, in Orion.
  • Hover over the image for an annotated view.
  • Date:  2 and 7 November 2024
  • FOV:  cropped to 2° 45' × 1° 50'
  • the angular size of NGC 2024 is about 30'
  • Telescope:  Stellarvue SVX102T + SFFR.74 reducer 526.34mm
  • nominally 535mm f/5.25
  • Guiding:  ZWO ASI120MM mini mono guide camera,
  • Stellarvue F050G 50mm guide scope
  • Computer:  ASIair pro Raspberry Pi
  • Mount:  iOptron CEM40
  • Camera:  ZWO ASI6200MC pro cooled to -10°C gain 100
  • Pixel size:  3.76 μm
  • Resolution:  1.473 arcsec/pixel
  • Frames:  68 × 15 seconds = 17 minutes
  • 46 × 60 seconds = 46 minutes
  • 86 × 240 seconds = 344 minutes
  • Filter:  Optolong UV-IR cut filter
  • Stacking:  two hundred frames (all full light) in Pixinsight
  • Calibration frames:  20 dark, 20 flat, 20 dark flats per session
  • Total Time:  6 hours 47 minutes
  • Processing:  Pixinsight – HDRComposition of three frames (15, 60, and 240 sec)
  • DynCrop, SPCC, DBE, SPCC, BlurXT, NoiseXT,
  • MaskedStretch, GHS, and HST stretches
  • PixelMath MStr + GHS + HST → Add, HDR8PhLm, Sat, Scale
  • Location:  Darling Hill Observatory near Vesper, NY