TROUBLESHOOTING
Problem
A circular image with no
vignetting cannot be
obtained.
Operating error
- The viewer's pupil is not at the
exit pupil of the eyepiece,
i.e. not on the axis and/or not
at the correct distance.
- The position of the eyepiece cup
does not match that for correct
use with and without glasses.
without glasses: rotate the
eyepiece cup out
20
Remedy/explanation
- Correct the position of the
head, the eyes, or the
spotting scope.
- Correct the adjustment:
Wearer of glasses rotate the
eyepiece cup in; for use