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 M25 Open Star Cluster 
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Many stars like our Sun were formed in open clusters. The above pictured open cluster, M25, contains thousands of stars and is about two thousand light years distant. The stars in this cluster all formed together about 90 million years ago. The bright young stars in M25 appear blue. Open clusters, also called galactic clusters, contain fewer and younger stars than globular clusters. Also unlike globular clusters, open clusters are generally confined to the plane of our Galaxy. M25 is visible with binoculars towards the constellation of the Archer ( Sagittarius). [Text adapted from APOD]


Pubblications "Flickr" Explore - September 06, 2015
Optics: Takahashi FSQ-106EDXIII F/3.6 383mm. - APO Refractor
Mount: AP Mach1 GTO
Camera: QSI-683WSG
Filters: Astrodon E Series Gen II LRGB 31mm
Guiding Systems: SX Lodestar
Dates/Times: 03 September 2015
Location: Pragelato - Turin - Italy
Exposure Detailse: R:G:B => 21:21:21 = > (7x3):(7x3):(7x3) Bin1 [num x minutes]
Cooling Details: -25
Acquisition: Maxim DL, Voyager
Processing: CCDStack2+, PS CS5
Mean FWHM: 1.78
SQM-L: 21.08
NOTE First Pubblished Image Acquired with PrimaLuceLab EAGLE system and dedicated Voyager