Moravian Instruments G2 Series Mark II User Manual page 35

use only screws supplied with the adapter, using of normal M4 screws
damages the adapter.
Because the necessity to adjust two screws (one pushing, one pulling) at
once is inconvenient, the adapter tilting mechanism is also equipped with
ring-shaped spring, which pushes the adapter out of the camera body. This
means the pushing screws can be released and still slight releasing of the
pulling screw means the distance between the adapter and the camera
body increases. The spring is designed to be strong enough to push the
camera head from the adapter (fixed on the telescope) regardless of the
camera orientation.
When all three pulling screws are fully tightened, releasing of just one
or two of these screws does not allow adapter to move, or at last only
very slightly thanks to deformation of the adapter body. If the adapter
has to be adjusted, it is necessary to slightly release all three pulling
screws, which makes room for tilt adjustment.
Figure 22: Adjusting of the "pulling" screw
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