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7. Operation
7.4 Tubes
Note:
Close any unused tube openings, as otherwise
stray light can interfere with observation.
Note:
Make sure that the connector cable is plugged in
on the MBDT25+ motorized tube (60.1).
Adjusting the Viewing Distance
• Adjust the viewing distance of the eye-
pieces so that a congruent total image is seen
(Fig. 60).
Fig. 60 Tube setting
↔↔
↔↔
↔
Personal eyebase settings
1 Motorized tube connection
Fig. 61 With AET22 tube individual adjustments
Adjusting the Viewing Angle
• For the AET22 and EDT22 ergotubes, the view-
ing angle can be adjusted by tilting the binocu-
lar viewer in the range of 5° - 32° (Fig. 61).
Adjusting the Eyepiece Extension to the Arm
Length
• With the AET22 tube, the eyepieces can be
extended up to 30 mm (Fig. 61).
1
↔↔
↔↔
↔