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Contains:  M 21, NGC 6531, Trifid nebula, M 20, NGC 6514
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            Scotty Bishop


Technical card

Resolution: 4680x3082

Dates:Aug. 2, 2018

Frames: 30x60" ISO1600

Integration: 0.5 hours

Flats: ~20

Bias: ~50

Avg. Moon age: 19.93 days

Avg. Moon phase: 72.71%

Bortle Dark-Sky Scale: 4.00 job: 2177289

RA center: 270.539 degrees

DEC center: -22.935 degrees

Pixel scale: 1.368 arcsec/pixel

Orientation: 284.093 degrees

Field radius: 1.065 degrees

Data source: Backyard


I took 30 minutes of M20 last night while trying to image Mars with a DSLR. I know better than to try to image Mars with a DSLR. Still, I can't complain on how this turned out with 5 minutes of processing on images taken with the moon blasting out. I used the K1 in crop mode since the Comet Hunter is NOT FF compatible.



Scotty Bishop
License: None (All rights reserved)

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            Scotty Bishop

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Cloudy Nights