Messier 75 Globular Cluster - Adam Lundie - Eatons Hill Observatory

Messier 75 Globular Cluster

Messier 75 Globular Cluster thumbnail
Messier 75 Globular Cluster
Messier 75 is a dense globular cluster 65000 light years away. This test shot is the first published photo from my new 10" f/4 newtonian telescope, and it's been quite a journey to get a nice field corrected image from it. Now I wait for the new moon and a suitable target.


  • 25x 120s Light pollution filter as luminance bin1x1
  • 12x 120s Red bin1x1
  • 12x 120s Green bin1x1
  • 13x 120s Blue bin1x1

Total exposure 2 hours 4 minutes.


  • GSO 10" f/4 newtonian
  • SkyWatcher EQ8 Pro Mount
  • QSI 683-ws8 Camera @ -15°C
  • Teleview Paracorr II field flattener
  • Astronomik Typ2 LP & RGB filters
  • Starlight Xpress Lodestar X2 Autoguider
  • Starlight Instruments Focus Boss II


  • Orange zone in Brisbane, Australia. (Bortle 7)
  • Imaged during full moon.


  • CCD Autopilot 5
  • The Sky X Professional Edition
  • FocusMax V4
  • CCDInspector: Image analysis & rejection
  • CCDStack 2+: Calibrate, align, stack, deconvolution, remove gradients, combine RGB.
  • Photoshop CC: Combine LP+RGB, noise reduction, curves, saturation, crop.