How to find NGC6906 from Altair
Identify the first reference star, then follow the numbered hops.
Follow the route from one recognizable star to the next until you reach NGC6906.
NGC6906 is 66° above the horizon toward the northwest.
HYG 99985.0
From Altair, move about 6.5° toward the east until you reach HYG 99985.0.
