100
11.3 Reticle of the telescope
Check
1. Aim at a target A from the telescope after leveling the
instrument the cross wire on the reticle. Lock the instrument with
vertical and horizontal locking knob after aiming at A.
2. Rotate the vertical slow motion knob, move A point to the
edge of the field of view (A 'points);
If point ―A‖ moves along the vertical line of the crosshair, but is
still in the vertical line as the left picture, the crosshair doesn't need to
calibrate. If point ―A‖deviate from vertical line center, as the right
picture, the crosshair is slant, so need to calibrate the reticle;
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
