Designation:
M39
Date:
January 7th, 2019
Camera:
Canon EOS 7D Mark II ( unmodified )
Optics:
Sky-Watcher ED120mm Doublet
Focal Length:
900 mm
Exposure:
20 X 60 Sec.
ISO:
1000
Mount:
Sky-Watcher NEQ6 Pro
Guiding:
Orion Star Shoot Auto Guider
Software:
Adobe Photoshop, DSS, Astroflat
Notes:
Messier 39 is an open cluster of stars in the constellation of Cygnus. M39 is best observed with binoculars, it has a total integrated magnitude (brightness) of 5.5 and spans an angular diameter of 29 arcminutes – about the size of the full Moon.