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 NGC1275 - Inside Perseus Galaxy Cluster 

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Here is one of the largest objects that anyone will ever see on the sky. Each of these fuzzy blobs is a galaxy, together making up the Perseus Cluster, one of the closest clusters of galaxies. The cluster is seen through a foreground of faint stars in our own Milky Way Galaxy. Near the cluster center, roughly 250 million light-years away, is the cluster's dominant galaxy NGC 1275, seen above as a large galaxy on the image center. A prodigious source of x-rays and radio emission, NGC 1275 accretes matter as gas and galaxies fall into it. The Perseus Cluster of Galaxies, also cataloged as Abell 426, is part of the Pisces-Perseus supercluster spanning over 15 degrees and containing over 1,000 galaxies. At the distance of NGC 1275, this view covers about 15 million light-years- [Text from APOD]

Pubblications "Flickr" Explore - March 05, 2018
Optics: GSO RC 10" F8 2000mm - Astrograph Ritchie-Chrétien
Mount: AP Mach1 GTO
Camera: QSI-640WSG
Filters: Astrodon LRGB 1.25" I Series Gen II
Guiding Systems: SXV-AO-LF Active Optics - SX Lodestar
Dates/Times: Autumn / Winter 2014-2016-2017
Location: Pragelato - Turin - (Italy)
Exposure Details: L:R:G:B => 1830:290:290:290 = > (122x15):(29x10):(29x10):(29x10) color Bin2 [num x minutes]
Cooling Details: -25°C
Acquisition: Maxim DL/CCD, Voyager
Processing: CCDStack2+, PS CS5
Mean FWHM: 1.68" / 2.78"
SQM-L: 20.15 / 20.88