About image
M52 is an open cluster in Cassiopeia constellation, located about 30’ from the Bubble Nebula: indeed most of us astrophotographers prefers taking wide field images with both objects, but in these images inevitably the attention is all caught by the nebula.
So I decided to take a close up on the cluster itself. It has a diameter of 13’ and it is a rich cluster being composed by many brilliant and young stars (the estimated age of this cluster is about 160 million 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 RGB
Guiding system OAG Moravian M68
with guide camera Moravian G1-0301
Exposure details R 10x300" bin2 -20C
G 10x300" bin2 -20C
B 10x300" bin2 -20C
Total integration 2,5h
Acquisition Voyager, PHD2
Processing Pixinsight 1.8,
Photoshop CS5
SQM-L 21.4
Location Promiod (Aosta
Valley, Italy), own remote observatory
Date 23 August 2020