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Messier 13  "Hercules Cluster"

Object  Details: Located  in the constellation Hercules. This is an example of a "globular " cluster of stars. 

 

 Date May 2009
 Location Starlight Observatory  Glasgow , DE
 Exposure 232 minutes (3.87 hours) total exposure time (Red= 6x 8min; green= 10 x 8min; blue= 13 x 8min) 1x1 binning ,ccd temp -32c to -35c
 Camera Sbig ST2000xm/ CFW10
 Scope/ lens Astro Physics 130mm/F6 refractor (780mm focal length)
 Filter(s) Astrodon  Generation II RGB  (I series)
 Cooling additional water cooling using an aquarium chiller
 Guider self guided 2x2 binning 8s exp
 Mount AP1200 gto
 Processing Maxim DL Pro 5,  CCD Stack,  Fits Liberator, Photoshop CS2,    Gradient Xterminator
 Notes


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