Moderator Challenge: "Any Globular Cluster"  
M13

M13(Rick Burke)

Acquisition Date : 4/30/2009
Camera : self-modded Canon Rebel XT
Camera Settings : ISO 800 19*5 min lights, 100 bias, 23 darks and 24 flats for 135 min total exposure
Telescope : Antares 8" f5 Newtonian
Mount : Skywatcher HEQ5 with EQMOD
Adapter / Prime / Afocal / Other : prime focus
Processing Package / Processing Applied : captured with Nebulosity 2, stacked with DeepSkyStacker levels and curves and a bit of tweaking with unsharp mask and gaussian blur to reduce noise in Photoshop.
Web Site : www.essential.bc.ca/astro
NOTES : I updated the photo with a slightly tweaked version. Adjusted the background level a bit to reduce some streaking

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