Vixen AP Equatorial Mount Instruction Manual page 37

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 Big Dipper (or Cassiopeia) on the reticle matches the Big Dipper
(or Cassiopeia) in the real sky.
Field of view of the polar alignment scope.
The patterns of the Big Dipper and Cassiopeia 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 scope's reticle. The locations of the Big Dipper and Cassiopeia on
the reticle have no relation to the location of Polaris, Delta UMi and 51 Cep on the reticle.
Window shutter
Slide down
Cassiopeia
Real field of view
(in the northern sky)
Note: The real stars of the Big Dipper (or
Cassiopeia) are not visible in the field of
view of the polar alignment scope.
37
Celestial north
Big Dipper
Real field of view (in the northern sky)