21
4.8
Centering the Objective
The BA310 Polarizing microscope allows for centering of three
objectives with a reference objective.
Objective centering screws on the centering nosepiece are used to
align the optical axis and the stage.
Before centering the objectives, look through the binocular tube at the
field of view, pick out an easily recognizable target and then rotate the
stage.
The target should illustrate a concentric circle of rotation about the
intersection of the cross lines. If it does not, rotate the stage until the
target is farthest from the intersection of the closslines, bring it in
halfway by means of the centering screws, and then bring it to the
center of the stage by moving the slide itself. Rotate the stage and
repeat the procedure if the centering has not been accomplished the
first time.
Image Off Center
Rotating stage
Stage rotation clamp
screw
Stage Rotation Clamp Screw
Image Centered
