• LBN 535, The Dark Shark Nebula
    • LBN 535
    LBN 535 Annotated image
  • The Dark Shark Nebula is a very faint dark nebula in Cepheus.
  • Hover over the picture for an annotated version
  • Date:  14 and 19 July 2023
  • FOV:  approximately 5° × 3° 20'; LBN 535 (the shark) is about 2° 30'
  • Telescope:  Askar FRA300 pro (300mm f/5 Petzval)
  • Guiding:  ZWO ASI120MM mini mono guide camera,
  • SVBony SV165 Mini 40mm f/4 guide scope
  • Computer:  ASIair proRaspberry Pi
  • Mount:  ZWO AM5 mount
  • Camera:  ZWO ASI6200MC Pro Cooled (-10°C) Color CMOS with gain 0
  • Pixel size:  3.76 μm
  • Resolution:  2.596 arcsec/pixel
  • Filter:  in camera UV/IR cut
  • Stacking:  Sixteen frames 0 gain 14 July 2023 and 240 second frames using Pixinsight
  • Seventy-one frames 100 gain 19 July 2023 all 240 second frames using Pixinsight
  • Total Time:  5 hours 48 minutes
  • Processing:  Pixinsight – SPCC, DBE, BlurXT, NoiseXT, MStr, GHS, HST,
  • PixelMath MStr + GHS + HST → PM, Sat, Scale
  • Location:  Stony Creek Boat Launch near Henderson, NY on 14 July 2023
  • and Darling Hill Observatory near Vesper, NY on July 19 2023