Sombrero Galaxy A comparison between my first ever astronomical photo 10 months ago and now - Adam Lundie - Eatons Hill Observatory

Sombrero Galaxy: A comparison between my first ever astronomical photo 10 months ago and now

31-Mar-2016
Sombrero Galaxy: A comparison between my first ever astronomical photo 10 months ago and now thumbnail
Sombrero Galaxy: A comparison between my first ever astronomical photo 10 months ago and now
The Sombrero Galaxy is an unbarred spiral galaxy 28 million light-years from Earth. The galaxy has a diameter of approximately 50,000 light-years, 30% the size of the Milky Way.

My first ever attempt at photographing the Sombrero Galaxy:

Image:

  • 39x 240s Luminance bin2x2 + 25 flat + 50x dark + 120x bias
  • 9x 120s Red bin3x3 + 15 flat + 50x dark + 120x bias
  • 9x 120s Green bin3x3 + 15 flat + 50x dark + 120x bias
  • 10x 120s Blue bin3x3 + 15 flat + 50x dark + 120x bias

Total integration 3 hours 32 minutes.

Hardware:

  • Celestron EdgeHD 1100
  • SkyWatcher EQ8 Pro Mount
  • QSI 683-wsg Camera @ -15C
  • Astronomik Typ 2c RGB filters
  • Orion StarShoot Autoguider
  • Foresight Innovations On Axis Guider
  • Starlight Xpress Adaptive Optics

Location:

  • Orange zone in Brisbane, Australia. (Bortle 7)
  • Average seeing + 50% moon phase.

Software:

  • Planning & camera alignment with Aladin 9
  • Captured with AstroArt 6
  • Guiding with PHD2 + PHD_Dither
  • CCDInspector: Image analysis & rejection
  • CCDStack 2+: Calibrate, align, stack, combine RGB.
  • Photoshop CC: Noise reduction, minimum filter, shadows/highlights, high pass filter, unsharp mask.

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