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Contains:  Great Cluster in Hercules, Hercules globular cluster, IC4617, M 13, M13, NGC 6205, NGC 6207, NGC6207
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M13 Great Hercules Globular Cluster, 


            Jarrett Trezzo
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M13 Great Hercules Globular Cluster

Technical card

Dates:March 22, 2019

Frames: 37x120"

Integration: 1.2 hours

Avg. Moon age: 16.39 days

Avg. Moon phase: 97.03%

Mean SQM: 18.02 job: 2597547

RA center: 16h 41' 38"

DEC center: +36° 27' 52"

Pixel scale: 1.192 arcsec/pixel

Orientation: -90.057 degrees

Field radius: 0.615 degrees

Resolution: 3049x2117

Locations: Backyard, Parrish, FL, United States

Data source: Backyard


What to do during galaxy season with a full moon!? This one came out pretty well considering how close it was to the nearly full moon and the short time involved. I think this is my 4th attempt on M13 and finally something I am pleased with. The image is cropped from the full frame due to some vignetting that didn't fully correct with flats and is resampled 50% to meet Astrobin size restrictions.



Jarrett Trezzo
License: None (All rights reserved)

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M13 Great Hercules Globular Cluster, 


            Jarrett Trezzo