Pole finder adjustment
If the polar star can be aimed at with the pole finder, it is possible to align the right ascension axis of the telescope parallel to the Earth's rotation axis via the azimuth and pole height adjustment. However, this requires the optical axis of the pole finder in the mount block to be aligned parallel to the right ascension axis.
The more accurate the pole finder adjustment is, the more precise the alignment can be and the better the tracking and long time exposures will be.
This adjustment has to be done only once after the purchase of the telescope or pole finder. If the adjustment screws are not operated afterwards, the adjustment is retained.
When rotating the declination axis, there are areas where the view through the pole finder is obstructed due to the design of the mount. For the adjustment, the declination axis is therefore rotated so that a free view is possible. Turned 90° to the left or right, the view is obstructed, and at 180° it is free again. Now the adjustment can be started.
The following is a step by step guide to adjust a pole finder in the mount.
View through the pole finder
Offset with misaligned pole finder
Displacement of the misaligned pole finder
|(4)||Now the right ascension axis is rotated 180° back to its original position. → As a result, the polar finder center will now be exactly on the other side of the object.|
Turning back the pole finder
View through corrected pole finder