Collimation Error - Prexiso T.O.2 Manual De Usuario

5.5 Collimation Error

Inspection
Adjustment
1. Fix the instrument on the tripod and perform precise leveling up.
2. Aim at object point A in the distance with the normal position of telescope and
take the reading of the horizontal angle HRnorm and aim at object A with the
reverse position of the telescope and take the reading of the horizontal angle
HRrev then:
Collimation Error C = (HRnorm - HRrev ± 180°)/2
If C <10", no adjustment is required; if C >10", adjustment is required.
1. Adjust the horizontal fine motion in the reverse position of the telescope so that
the reverse reading HRrev? = HRrev + C.
2. Remove the protective cover of the reticle of the telescope and adjust both the
left and right adjusting screws so that the vertical hair of the reticle coincides
with object A.
3. Repeat the steps in "Inspection" and "Adjustment" until acceptable condition is
reached.
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