115
8
8
A
A′
8
8
A
A′
Calibration
1. First, take down the reticle cover between telescope
eyepiece and focusing hand-wheel, and you can see four fixed
screw of the reticle bed (sees attached figure);
2. Unscrew the three fixed screw evenly with screwdriver,
rotate the reticle around collimation axis, to make A point on the
vertical line of the reticle;
3. Tighten the screw evenly, test the calibration results with
the above methods;
4. Cover the reticle.
Fixing screw
Eyepiece
11.4 The Perpendicularity of Collimation axis and
Cross axis (2C)
Check
1. Set a target A in about 100m away, and make sure the