• NGC 6820 and NGC 6823 in Vulpecula
    • NGC 6820 and NGC 6823 in Vulpecula
    Annotated image
  • NGC 6820 is an emission nebula in the constellation
  • Vulpecula.  Buried in NGC 6820 is an open
  • cluster, NGC 6823, about 6 kly away.
  • Hover over the picture for an annotated version
  • Date:  11 August 2026
  • FOV:  cropped to 75' × 50'
  • Rotation:  89.994°
  • Telescope:  Stellarvue SVX102T + SFFX-1 (714mm, f/7)
  • Guiding:  ZWO ASI120MM mini mono guide camera,
  • SVBony SV165 Mini 40mm f/4 guide scope
  • Computer:  ASIair plus 256GB
  • Mount:  ZWO AM5N
  • Camera:  ZWO ASI2600 MC Duo Cooled (0°C) Color CMOS gain 100
  • Pixel size:  3.76 μm
  • Resolution:  1.053 arcsec/pixel
  • Filter:  Optolong UV/IR cut
  • Frames:  fifty-six 300 second subs
  • Total Time:  4 hours and 40 minutes
  • Calibration:  20 flats, 20 dark flats, and 20 darks
  • Processing:  Pixinsight – MGC, DBE, SPCC, BlurXT, NoiseXT → Linear
  • MultiscaleAdaptiveStretch → Stars
  • Linear, StarXT, MStr, GHS, HTS, MAS, →
  • PixelMath 0.25*(MStr + GHS + HTS + MAS) → Starless
  • PixelMath ~(~Stars*~Starless) → Blend, scale
  • Location:  Darling Hill Observatory near Vesper, NY