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Appendix E. Polar Scope Adjustment
If you are suspecting that the polar scope may be misaligned to the mount R.A. axis, you may check
it by putting a star in the center of the polar scope reticle cross hairs and rotating mount’s R.A. axis. If the
star stays in the center of cross hairs, the polar scope is aligned to the mount’s R.A. axis.
In the event the polar scope optical axis needs to be adjusted, you can do this procedure at night
while pointing at Polaris. However, it is probably easier to do it during the daytime using a distant point,
such as a flag pole or top of a building a couple of hundreds away, as your target. Please remove the
telescope, the counterweights and counterweight shaft from the mount. Aim the mount to the object. Use
the Latitude Adjustment Screw and Azimuth Adjustment Knob to center the object.
1. Release RA Clutch Screws. Rotate the
mount along the RA axis to the
balance position, dovetail saddle on
the
right side. Lock the RA clutch screws.
2. Loose latitude Locking Screws and
Azimuth Locking Screws a little.
Centering the object one the cross
hairs by adjust Latitude Adjust. screw
and
Azi. Adjust. Knob.
3. Release the RA clutch again. Rotate
the
mount 180º to bring the dovetail to the
left
side. Retighten the RA clutch screw.
Bring the object half the distance to the
center by adjusting the reticle
adjustment set screws using a hex key.
Keep in mind that the image in the
finder is inverted. Loose one screw first,
then
tighten the other screw(s). Only
loose/tighten one screw at a time and a few turns each time to avoid the reticle totally lost its position.
It may take a few minutes to familiarize yourself with the screws that move the polar scope in the
appropriate direction.
PLEASE do not over tighten the setting screws.
4. Release the RA clutch and rotate the mount 180º to bring the dovetail back to the right side. If you
are lucky enough, the object will stay in center of the polar scope. Otherwise, repeat Steps 2 and 3
to further move the object to the center.
5. After few times, the object will stay in center when the mount is flipped from right to left.
x
x
Rotate
Rotate
Center the object
Bring the object
half the distance
to the center
x x
x x
Rotate
Rotate
Center the object
Bring the object
half the distance
to the center
Eyepiece
Reticle Adj.
Screws
Locking Ring
Objective Lens