Messier 55 Globular Cluster - Adam Lundie - Eatons Hill Observatory

Messier 55 Globular Cluster

Messier 55 Globular Cluster thumbnail
Messier 55 Globular Cluster
One of the few Messier objects difficult to observe in the northern hemisphere, M55 is a globular cluster 17,600 light years away, comprising of around 100,000 very old stars.

This is also the first light photo from the acquisition of a Skywatcher Esprit 120ED. As I'm still waiting for some adapters to be machined to match the included field flattener, I had to settle for a Baader MPCC II (coma corrector). I'm still pleasantly surprised with the result.


  • 19x 180s Red
  • 19x 180s Green
  • 18x 180s Blue

Total integration 2 hours, 48 minutes.


  • Skywatcher Esprit 120ED
  • Skywatcher EQ8 Pro mount
  • QSI 683-ws8 Camera @ -15°C
  • Astronomik deep sky RGB filters
  • Starlight Xpress Lodestar X2 Autoguider
  • Celestron large format off-axis guider
  • Baader MPCC II coma corrector
  • Starlight Instruments Feather Touch Focuser + Posi Drive Motor


  • Imaged on 18th June 2019.
  • Orange zone in Brisbane, Australia. (Bortle 7)


  • Planning & camera alignment with Aladin 10
  • Captured with TheSkyX Professional
  • Guiding with PHD2
  • FocusMax auto focus
  • PixInsight: Calibrate, align, integrate, dynamic background extraction, RGB combination, noise reduction, photometric color calibration, deconvolution, histogram, curves, crop.