Olympus CHA-P Manual de instrucciones - Página 12
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4. Cenbring
aha Stage
1
1
Lmking through the
eyepi-
and
ob-ive
IOX, determine
some
pwtlarbr point,
s
you
like,
In
the specimen image
and
coincide this point
with the center of the
cross
hairs
of the
eyepiece.
2) Rotating
the
stage, coincide
the
center of the rotation
of
a
specimen
pojnt
with
the
can-
ter of
the crass
haln
by
means
of
the
two centering
screws
Q.
(Fig.
5)
*
Repear
this prcicdwe untif
the
m a t i o n
is
s e a i d .
Circular
path
of
5. antaring the
O $ @ t i m
This
centration
is
required
for
all PO objectives
except
the
objective PO 1 OX.
1)
I m r t
a centering wrench
into each centering
swew
of
the
nosapiece.
(Fig. 8)
C
2 )
By
means of the two
centering
wrenches,
coincide the
center
of
the
GTW
hairs
to the rotation
center
of
the
specimen.
I
3)
After
all
objectives
are centered,
remove
the
centering
wrenches.
6. Clae of Aperture Iris
Diaphragm
Adjust the
opening
of
the
aperture
iris diaphragm
m r d i n g to
various
conditions
such
as the numerical
aperture of
. t h
objective, i m a s contrast, depth of
focus,
and
f
l a t n a of
field.
Generally it is aften prefem
b k
t o
stop
dwvn
the aperture
iris diaphragm
to
70$6
or
80%
of the
N.
A. of the
objectiw.
After the
eyepisce
is mrn&
from the
&sewation
tube,
if necmary, look
through
the observation
tube
and
check the
opening of the aperture
diaphragm
at
the
objectiw pupil.
Fig, 6