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Contains:  NGC 6144, M 4, NGC 6121, The star Antares (αSco)
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Antares and M4, 


            Björn Hoffmann
Antares and M4

Antares and M4

Technical card

Resolution: 2000x1155

Dates:May 27, 2017May 28, 2017

Frames: 140x30" ISO1600

Integration: 1.2 hours

Avg. Moon age: 2.54 days

Avg. Moon phase: 7.42%

Bortle Dark-Sky Scale: 3.00

Mean FWHM: 4.00 job: 1597398

RA center: 246.631 degrees

DEC center: -26.405 degrees

Pixel scale: 3.920 arcsec/pixel

Orientation: -179.256 degrees

Field radius: 1.257 degrees


Heavy crop of my original Rho Ophiuchi dataset with 2x drizzle to show the beauty of M4!



Björn Hoffmann
License: Attribution-NonCommercial-NoDerivs Creative Commons

Sky plot

Sky plot


Antares and M4, 


            Björn Hoffmann