How to find M39
This guide uses bright stars first, then narrows the field for a telescope or binocular finder. Use Cygnus as the main sky landmark.
Follow the route from one recognizable star to the next until you reach M39.
M39 is 72° above the horizon toward the Northwest.
Use Cygnus as the large-scale sky landmark before following the numbered route.
field star · mag 6.5
From Deneb, move about 6.5° toward the north-east until you reach field star · mag 6.5.
