About imageM2 is the first globular cluster in Messier Catalogue, visible in Aquarius constellation
a remarkable object, with diameter of 16’ and visual magnitude of 6.3; it has a
very bright core and this has obliged me to combine long and short exposures in
order to not saturate it.
M2 is 37,500 light years from the Sun.
Technical dataOptic GSO RC12 Truss - Aperture 304mm, focal lenght 2432mm, f/8 Mount 10Micron GM2000 HPSIICamera Moravian G3-16200 with external filter wheel 7 positionsFilters Astrodon Gen2 E-Serie Tru-Balance 50mm unmounted LRGB Guiding system OAG Moravian M68 with guide camera Moravian G1-0301Exposure details L 15x120" + 10x10", bin2 -15C R 15x120" + 10x10". bin2 -15C G 15x120" + 10x10", bin2 -15C B 15x120" + 10x10", bin2 -15CTotal integration 2,1hAcquisition Voyager, PHD2Processing Pixinsight 1.8, Photoshop CS5SQM-L 21.1 Location Promiod (Aosta Valley, Italy), own remote observatoryDate 24 August 2020