• IC 4592, the Blue Horsehead Nebula
    • IC 5146 in Cygnus, the Cocoon Nebula
    Annotated image
  • The Blue Horsehead Nebula in Scorpius.
  • Date:  27 June and 1 July 2024
  • FOV:  6° 45' × 4° 30'; the angular size of IC 4592 is about 60'
  • Telescope:  Askar FRA300 pro (300mm f/5 Petzval)
  • Guiding:  ZWO ASI385MC planetary camera,
  • ZWO 30F4 30mm mini guide scope
  • Computer:  ASIair pro Raspberry Pi
  • Mount:  ZWO AM5 mount
  • Camera:  ZWO ASI6200MC Pro Cooled (-10°C) Color CMOS, 100 gain
  • Pixel size:  3.76 μm
  • Resolution:  2.592 arcsec/pixel
  • Frames:27 June 2442 × 240 seconds,
  • 1 July 2434 × 240 seconds
  • Filter:  Optolong UV/IR cut
  • Stacking:  seventy-six 240 second frames using Pixinsight
  • Total Time:  5 hours 4 minutes
  • Processing:  Pixinsight – SPCC, DBE, SPCC, BlurXT, NoiseXT, MStr, GHS, HST,
  • PixelMath MStr + GHS + HST → PM, HDR8, Sat, DynCrop/Scale
  • Location:  Darling Hill Observatory near Vesper, NY