iOptron 8403 User Manual
9
For 90mm Maksutov-Cassegrain (#8504)
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Install Diagonal by screwing it onto the back end of the scope.
You can adjust the position of the diagonal by loosening the free-
spinning threader on the diagonal.
You can adjust the position of the diagonal by loosening the free-
spinning threader on the diagonal.
Install the Finderscope by sliding the dovetail plate onto the
sleeve (see arrow) and tightening the side screw.
The eyepiece can be placed on the end of the scope or on the
side (see next step). Secure the eyepiece using the side screw.
Use the focus knob to adjust the focus.
sleeve (see arrow) and tightening the side screw.
The eyepiece can be placed on the end of the scope or on the
side (see next step). Secure the eyepiece using the side screw.
Use the focus knob to adjust the focus.
This picture shows the eyepiece on the side. Remove the
protective cap to insert the eyepiece. The diagonal is not used for
side viewing.
Use the flip switch to flip the internal mirror to view from the side
or the end of the scope.
Flip
switch
switch
Diagonal
Eyepiece