• 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:  24 February 2022, 20 September and 12 October 2023
  • FOV:  2° 30' × 1° 40'; the angular size of NGC 2024 is about 30'
  • Telescope:  Stellarvue SVX102T + SFFR.74 reducer (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 ASI071MC pro cooled to -10°C
  • Pixel size:  4.78 μm
  • Resolution:  1.886 arcsec/pixel
  • Frames:24 Feb 2212 × 180 seconds, gain 90,
  • 20 Sept 2315 × 240 seconds, gain 240,
  • 12 Oct 2321 × 240 seconds, gain 240
  • Filter:  Baader Light Pollution Moonglow filter with IR cut (12 × 180 sec 90 gain) and
  • Optolong L-eNhance narrow dual band (36 × 240 sec 240 gain)
  • Stacking:  Twelve 180 second frames (full light) and thirty-six 240 second frames
  • (narrow band) added using PixelMath in Pixinsight
  • Calibration frames:  20 dark, 20 flat, 20 dark flats for each session
  • Total Time:  3 hours
  • Processing:  Pixinsight – SPCC, DBE, BlurXT, NoiseXT, MskStr, GHS, HistoTr,
  • PixelMath MskStr + GHS + HistoTr, HDR, Sat, Scale
  • Location:  Darling Hill Observatory near Vesper, NY (24 Feb 22 and 20 Sept 23)
  • and Stony Creek Boat Launch near Henderson, NY (12 Oct 23)