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The Details
Object
M 5 Globular Cluster in Serpens
Optics
Astro-Physics 12" Mak-Cass f/8
Platform
Astro-Physics 1600 Mount with absolute encoders
Camera
FLI 16803 Proline CCD
Filters
Tru-Balance LRGB filter set Gen 2
Date
14 April 2016
Location
Las Campanas Observatory, Chile
Exposure
L 12 ea x 300 sec 1x1 bin; RGB 6 ea x 300 sec 1x1 bin
Software
ACP, Maxim DL/CCD, , CCDStack 2, Photoshop CS5
Orientation
Field of view: 52' x 52' centered on RA 15h18m37s
DEC +02°04'54" (2000). North angle 179.5°; east 90° CCW from north
Notes
One of the largest known globular clusters, M5 spans 165 light-years in diameter and lies 25,000 light-years from Earth in the direction of the constellation Serpens.  It was discovered in 1702 by German astronomer Gottfried Kirch, well before Messier first observed it in 1764.

 

 

 

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