How to find NGC6891 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 NGC6891.

NGC6891 is 55° above the horizon toward the northwest.

Altair

Center Altair in the finder or a low-power eyepiece before following the field stars.

From Altair, move about 6.2° toward the northeast until you reach HYG 99623.0.

From HYG 99623.0, move about 1° toward the northeast until you reach NGC6891. This is the target field.