Hemisphere:  Northern  ·  Constellation: Hercules (Her)  ·  Contains:  Great Cluster in Hercules  ·  M 13  ·  NGC 6205  ·  NGC 6207
M13 - The Great Globular Cluster in Hercules, 



    
        

            Michael Rector
M13 - The Great Globular Cluster in Hercules
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Technical card

Imaging telescopes or lenses: Celestron XLT 150

Imaging cameras: Canon 350d Canon

Mounts: Celestron Advanced GT CG5

Software: Photoshop  ·  DSS

Accessory: Orion StarShoot AutoGuider  ·  Intervalometer


Dates:June 8, 2014

Frames:
24x120" (48')
13x300" (1h 5')

Integration: 1h 53'

Avg. Moon age: 9.85 days

Avg. Moon phase: 75.07%


Basic astrometry details

Astrometry.net job: 297431

RA center: 16h41m18s.7

DEC center: +36°3325

Pixel scale: 1.759 arcsec/pixel

Orientation: 49.495 degrees

Field radius: 0.991 degrees


Resolution: 620x408

Locations: Backyard, Plattsburgh, NY, United States

Description

This image is 13 images at 5 minutes and 24 images at 2 minutes for a total of 2.8 hours, all images taken at ISO 800. 33 flat frames, and 44 dark frames. Stacked in deep sky stacker and post processing in photoshop. I did the two exposures as separate stacks and combined them in Photoshop. I was attempting to bring out some detail in the core with the shorter exposures while trying to get the dimmer outer stars of the cluster using the longer exposures. Didn’t quite work the way as planned, but I’m still pleased with the final results.

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M13 - The Great Globular Cluster in Hercules, 



    
        

            Michael Rector