Omega Centauri - Adam Lundie - Eatons Hill Observatory

Omega Centauri

19-Apr-2017
Omega Centauri thumbnail
Omega Centauri
Omega Centauri (NGC 5139) is the largest globular cluster in the Milky Way at a diameter of roughly 150 light-years. It is estimated to contain approximately 10 million stars.

It is so distinctive from the other globular clusters that it is thought to have an alternate origin as the core remnant of a disrupted dwarf galaxy.

Image:

  • 54x 60s Red bin2x2 + 10 flat + 50x dark + 120x bias
  • 23x 60s Green bin2x2 + 10 flat + 50x dark + 120x bias
  • 49x 60s Blue bin2x2 + 10 flat + 50x dark + 120x bias

Total exposure 2 hours 6 minutes.

Hardware:

  • Skywatcher Black Diamond 80ED
  • SkyWatcher EQ8 Pro Mount
  • QSI 683-ws Camera @ -15°C
  • Astronomik typ 2c RGB filters
  • Starlight Xpress Lodestar X2 Autoguider
  • Innovations Foresight On Axis Guider
  • Starlight Instruments Focus Boss II

Location:

  • Orange zone in Brisbane, Australia. (Bortle 7)

Software:

  • Planning & camera alignment with Aladin 9
  • Captured with AstroArt 6
  • Guiding with PHD2 + PHD_Dither
  • Live focusing with FocusLock
  • CCDInspector: Image analysis & rejection
  • CCDStack 2+: Calibrate, align, stack, combine RGB.
  • Photoshop CC: Curves, high pass filter, color balance, saturation.

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