Saturn Nebula - Adam Lundie - Eatons Hill Observatory

Saturn Nebula

11-Aug-2017
Saturn Nebula thumbnail
Saturn Nebula
After a brief hiatus from astronomy to build a new, larger observatory, I've chosen another difficult target that was surprisingly bright.

The Saturn Nebula is a tiny but complex planetary nebula, ~4000 light years away in Aquarius. The Saturn Nebula gets its name from its resemblance to the planet Saturn to the observer.

Image:

  • 103x 60s Luminance + 12 flat + 50x dark + 120x bias
  • 39x 60s Red + 10 flat + 50x dark + 120x bias
  • 39x 60s Green + 10 flat + 50x dark + 120x bias
  • 33x 60s Blue + 10 flat + 50x dark + 120x bias

Total exposure 2 hours 16 minutes.

Hardware:

  • Celestron 11-inch Edge HD
  • SkyWatcher EQ8 Pro Mount
  • QSI 683-ws Camera @ -15°C
  • Astronomik Typ2 LRGB filters
  • Starlight Xpress Lodestar X2 Autoguider
  • Starlight Xpress Adaptive Optics
  • Innovations Foresight On Axis Guider
  • Starlight Instruments Focus Boss II

Location:

  • Orange zone in Brisbane, Australia. (Bortle 7)
  • Imaged over 3 nights, 50% moon.

Software:

  • Planning & camera alignment with Aladin 9
  • Captured with AstroArt 6
  • Guiding with PHD2 + PHD_Dither
  • FocusLock live focusing
  • CCDInspector: Image analysis & rejection
  • CCDStack 2+: Calibrate, align, stack, deconvolution, remove gradients, combine RGB.
  • Photoshop CC: Shadows/highlights, high pass filter, unsharp mask, combine L+RGB, curves, adjust colour balance, saturation, crop.

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