M 56

About image
M56 is a globular cluster in the Lyra constellation.
It has an apparent diameter of 8.8' and magnitude of 8.3: it is one of the less brilliant globular clusters, above all because it lacks the very bright nucleus that most of these types of clusters have.
It is located at a distance of about 32,900 light years from the Earth and its diameter measures approximately 84 light years.

Technical data
Optic          GSO RC12 Truss - Aperture 304mm, focal lenght 2432mm, f/8
Mount        10Micron GM2000 HPSII
Camera         Moravian G3-16200 with external filter wheel 7 positions
Filters        Astrodon Gen2 E-Serie Tru-Balance 50mm unmounted LRGB
Guiding system    OAG Moravian M68 with guide camera Moravian G1-0301
Exposure details  L 21x300" bin2 -10C
                                    R 9x300" bin2 -10C
                                    G 9x300" bin2 -10C
                                    B 9x300" bin2 -10C
Total integration  4h
Acquisition      Voyager, PHD2
Processing      Pixinsight 1.8, Photoshop CS5
SQM-L       21.40    
Location       Promiod (Aosta Valley, Italy), own remote observatory
Date          26/27 June 2019

© Roberto Marinoni 2019 - All rights reserved