53
GX53
Rotate the collector lens focusing knob
e
to project the arc image
on U-CST. (Picture A)
If the arc image is not projected, rotate the burner centering knob
f
.
If it is difficult to use the collector lens focusing knob of the
mercury lamp housing because it is placed at the back of the
microscope, insert the extension handle (U-CLA)
g
in the
knob and use the knob.
Rotate the burner centering knob
f
to move the arc image to the
center of the right (or left) half of the field of view. (Picture B)
Fit the Allen screwdriver into the mirror focusing screw
h
on the rear
of the lamp housing and rotate the screw to bring the mirror arc image
into focus. (Picture C)
Rotate the burner-centering knob
f
to overlap the arc image with
mirror arc image. (Picture D)
In actual observation, rotate the collector lens focusing knob
e
to
adjust the observation field to be uniform.
A B C D
The centering of the mercury burner is recommended after
the burner is replaced or when the unevenness is noticed in
the brightness of the observed image.
99
10
11
e
f
h
g
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