Vixen AP Equatorial Mount Instruction Manual page 42

APPLICATION
3
Open the round window on the declination body by sliding down the shutter of the window. While looking into the polar alignment scope, turn the
polar alignment scope body so that the engraved Southern Cross (or Alpha Eridani) on the reticle directs the Southern Cross (or Alpha Eridani) in
the real sky.
Field of view of the polar alignment scope
Both the Southern Cross and Alpha Eridani on the reticle are positioned to correspond to the real sky. They are used as a guidepost to know the turning
direction of the polar alignment reticle. The locations of the Southern Cross and Alpha Eridani on the reticle have no relation to the locations of the
Octantis stars on the reticle.
Window shutter
Slide down
Southern Cross
Real field of view
(in the southern sky)
Note:
The real stars of the Southern Cross (or Alpha Er-
idani) are not visible in the field of view of the polar
alignment scope.
42
Celestial south ★
Alpha Eridani
Field of view of the polar alignment scope