Edge On Spiral Galaxy NGC 3717 - Adam Lundie - Eatons Hill Observatory

Edge On Spiral Galaxy NGC 3717

Edge On Spiral Galaxy NGC 3717 thumbnail
Edge On Spiral Galaxy NGC 3717
NGC 3717 is a large spiral galaxy 60 million light years from Earth. Although 100,000 light years across, seen side-on, the galactic disk appears thin with prominent dust lanes.


  • 104x 300s Luminance
  • 19x 300s Red
  • 24x 300s Green
  • 45x 300s Blue

Total integration 16 hours. Focal length: 1960mm


  • Celestron 11" EdgeHD
  • Celestron 0.7x EdgeHD focal reducer
  • Skywatcher EQ8 Pro mount
  • QSI 683-ws8 Camera @ -15°C
  • Astrodon LRGB Gen2 E-Series Tru-Balance filters
  • Starlight Xpress Lodestar X2 Autoguider
  • Innovations Foresight ONAG
  • Starlight Instruments Feather Touch Focuser


  • Exposed over 4 nights between 12th to 17th April 2020
  • Orange zone in Brisbane, Australia. (Bortle 7)


  • Planning & camera alignment with Aladin 10
  • Captured with TheSkyX Professional
  • Guiding with PHD2
  • PixInsight: Calibrate, align, integrate, dynamic background extraction, LRGB combination, noise reduction, photometric color calibration, histogram, HDR multiscale transform, curves, crop.