Hemisphere:  Southern  ·  Constellation: Sagittarius (Sgr)  ·  Contains:  M 20  ·  M 21  ·  NGC 6514  ·  NGC 6531  ·  Trifid nebula
 M 21 e M 20, 



    
        

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 M 21 e M 20
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M 21 e M 20

Technical card

Imaging telescopes or lenses: Sky-Watcher Explorer 150

Imaging cameras: Canon T3 UNMODDED T3

Mounts: Skywatcher HEQ5 Pro HEQ5 Pro

Software: Deep Sky Stacker 3.3.4 DeepSky Stacker 3.3.4


Dates:Aug. 1, 2015

Frames: 20x20" (6' 40")

Integration: 6' 40"

Avg. Moon age: 15.95 days

Avg. Moon phase: 98.43%


Basic astrometry details

Astrometry.net job: 764187

RA center: 18h03m15s

DEC center: -22°4409

Pixel scale: 0.885 arcsec/pixel

Orientation: 150.692 degrees

Field radius: 0.574 degrees


Resolution: 620x454

Comments

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Histogram

 M 21 e M 20, 



    
        

            nunciusaustralis