Nikon S-kt - Filters; 6 P H O T O M I C R O G R a P H

(6)
Observation
The microscope
permits
observation with
uniformly bright illumination ranging
from
the 4X objective up
to the oil-
immersion
100X
objective,
with no need
of changing the illumination
system.
For
interference or
phase-contrast
observa-
tion, turn
the
brightness adjdsting
dial
(Fig.
12)
to
get
a
brighter image
Note that
this
microscope
cannot be used
for
interference
phase-contrast
observa-
tion with the
100X
oil-immersion,
be-
cause of insufficient
brightness.
It can be used
with
the 40X objective for
up to a total
magn
if ication of 400X,
when the illumination ls
adiusted
for
maximum
brightness.
(7)
Photomicrography
Compared with
the
Nikon
S-Ke
Micro-
scope, the
Model
S-Kt
will
provide photo-
graphs
of
somewhat
lower
contrast.
In monochromatic
photography,
good
contrast
can
be
obtained
by the use of a
green
(monochrombtic)
f i lter.
In
color
photomicrography.
as shown in
Fig. 13, the dial of
the built-in light
adjuster at the
side
of the microscope
base
is
to be set
with
the voltmeter in
PHOTO
position
(near
7.5V), where
the
green
area
fills
the
window.
Use Nikon Filter
CB i65 or Wratten 58.
(8)
Filters
Filters 33mm in
diameter
are used in the
filter
holder
beneath the condenser
lens,
and 45mm diameter f
ilters
above the
illumination field
lens.
Rri,rhtnocc :rlirrciino rl i:l
Fis. 12
Fis. 13