Betelgeuse
Use the constellation outline drawn on the overview to identify Betelgeuse. Then center it in the finder or a low-power eyepiece.
How to find NGC2239
This guide uses bright stars first, then narrows the field for a telescope or binocular finder. Use Orion as the main sky landmark.
Follow the route from one recognizable star to the next until you reach NGC2239.
NGC2239 is 14° above the horizon toward the East.
Use Orion as the large-scale sky landmark before following the numbered route.
field star · mag 5.7
From Betelgeuse, move about 6.0° toward the east until you reach field star · mag 5.7.
field star · mag 4.4
From field star · mag 5.7, move about 1.7° toward the east until you reach field star · mag 4.4.
