Focussing And Target Sighting - Sokkia 30R Series Operator's Manual

8. FOCUSSING AND TARGET SIGHTING

• When sighting the target, strong light shining directly into the objective lens may
cause the instrument to malfunction. Protect the objective lens from direct light
by attaching the lens hood.
Observe to the same point of the reticle when the telescope face is changed.
PROCEDURE
1. Focus on the reticle
Look through the telescope
eyepiece at a bright and
featureless background.
Turn the eyepiece screw
clockwise, then counterclockwise
little by little until just before the
reticle image becomes focussed.
Using these procedures, frequent
reticle refocussing is not
necessary since your eye is
focussed at infinity.
2. Sight the target
Loosen the vertical and horizontal
clamps, then use the peep sight to
bring the target into the field of
view. Tighten both clamps.
3. Focus on the target
Turn the telescope focussing ring
to focus on the target.
Turn the vertical and horizontal
fine motion screws to align the
target with the reticle.
The last adjustment of each fine
motion screw should be in the
clockwise direction.
30