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Contains:  M 21, NGC 6531, Trifid nebula, M 20, NGC 6514, The star 4Sgr
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M20, 





    
        

            northwolfwu
M20

M20

Technical card

Imaging telescope or lens:Zhang 80ED F6

Imaging camera:SBIG ST8300M

Mount:Sky-Watcher NEQ6

Guiding telescope or lens:Wenjia 60 220

Guiding camera:QHYCCD QHY5

Resolution: 2624x2156

Dates:July 23, 2012

Frames: 28x300"

Integration: 2.3 hours

Avg. Moon age: 4.34 days

Avg. Moon phase: 19.87%

Astrometry.net job: 105722

RA center: 270.615 degrees

DEC center: -23.028 degrees

Pixel scale: 2.246 arcsec/pixel

Orientation: 89.164 degrees

Field radius: 1.059 degrees

Comments

Author

northwolfwu
northwolfwu
License: None (All rights reserved)
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M20, 





    
        

            northwolfwu