Bresser Researcher Bino Mode D'emploi page 8

interocular distance control (3) until you reach a single, round
image. Keep the value on the scale in mind for a faster adjust-
ment the next time.
5. Observation
• You begin each observation with the lowest magnification
(eyepiece 10x and objective 4x). So that the object to be
viewed is centred and properly focussed.
• The higher the magnification the more light is required for
good picture quality.
• For applications with the 100x objective, it is recommended
that examinations are done only with oil immersion.
Begin with a simple observation.
Turn the nosepiece (6) onto the smallest magnification and
insert the 10x eyepieces. Now, place a prepared slide under
the objective on the microscope table (7). Move the prepara-
tion on the table with the two adjusting screws (8 and 9). Now,
look through the eyepieces (1) and turn the coarse adjustment
(12) carefully until the image becomes visible. The definition is
applied by the fine adjustment (13). Make sure that you never
overtighten the fine adjustment. If you don't reach a sharp im-
age after the fine adjustment, you may adjust the diopter set-
ting (4) until it matches your eye. For this, turn the diopter set-
ting (4) to O, look through the eyepieces and close your left eye.
Focus the object for your right eye using the coarse and fine
focussing wheels (12 and 13). Now, close your right eye and
look only with the left eye through the left eyepiece. If the im-
age isn´t sharp, turn the diopter setting (4) to get a sharp image.
6. The microscope table
With the microscope table (7), you can look at your preparation
in a precise position and to the exact millimeter. The object
is placed between the clamps on the microscope table. Move
the object, with help of the axis-adjustments (8 and 9), directly
under the objective. With the built-in vernier at both axes you
can now specifically set and shift the object. Your sample can
now be viewed with different magni fi cations.
7. Oil immersion
Directions for observation with oil immersion. Put a drop of im-
mersion oil (16) onto the upper lens of condenser and raise
the condenser by using the height adjustment (11) until the oil
touches the slide from below. Centre your object, with mid-
dle magnification, and with the light illumination on. Move the
nosepiece with the coarse focusing wheel up high and screw
in the 100x objective. Take a drop of immersion oil and place
it on the preparation. Move the objective down carefully with
the coarse adjustment, until it touches the immersion oil. Look
through the eyepiece and focus with the fine adjustment. Do
not forget to clean the objective, the preparation, and the con-
denser after the observation with some alcohol.
8. Changing the fuse (Fig. 2)
B
small screwdriver for the purpose and press the screw a little
in to undo it. Remove the old fuse and insert a new one of the
same type. Retighten screw and fuse again. The microscope is
now ready for use again.
A fuse is built in for safety
reasons. Should it burn
through, replace it as be-
low: Pull the plug and lay
the instrument carefully on
its side. Carefully, undo the
Fig. 2
"FUSE" screw (1). Use a
Only for Trino (Art.No. 5723100):
Photography using the Researcher Trino
The trinocular head on the Researcher makes it possible to take
pictures using a mirror reflex camera or a Bresser MicrOcular.
NOTE!
The Researcher Trino was designed for use with
a Bresser MicrOcular. When using a SLR cam-
era the large picture area causes shadowing.
This worsens the greater the enlargement.
Using the Bresser MicrOcular:
The Bresser MicrOcular can be inserted in the extension tube
(A) of the trinocular head.
The head is so designed that the MicrOcular and the eyepieces
can yield a homofocal image. To do so first focus on the object
in the eyepieces. Then look at the camera's live view. Undo the
counter-ring (B) on the extension tube. Turn the extension tube
to adjust camera eyepiece focus. Retighten it once focussed.
For optimal focussing use the 10x or 40x objective. Employ
a photo adaptor and a camera-specific T2 ring when using a
mirror reflex camera. After attaching the adaptor to the camera,
the combination is inserted in the extension tube (A).
You may not be able to focus correctly as the microscope table
cannot be raised sufficiently. Undo the table up stop (18) and
raise the table appropriately. When changing objectives lower
this table a little to prevent the objective touching the speci-
men.
NOTES on cleaning
1. Avoid disassembling the microscope!
Because of being a precise optical instrument, do not disas-
semble the microscope. That may cause serious damage to
its performance. Do not disassemble the objectives.
2. Avoid contamination!
You should make sure that dust or moisture do not come
in contact with your microscope. Avoid putting fingerprints
on any optical surfaces! If dust or dirt nevertheless have
gotten onto your microscope, or the accessories, remove it
as described below.
3. Cleaning non-optical parts:
Disconnect the plug from mains socket before cleaning
non-optical parts of the microscope (e. g. the frame or the
stage). Firstly, remove dust or dirt from your microscope, or
accessories, using a soft brush. Then clean the soiled area
with a soft, lint-free cloth; the cloth may be moistened with
a mild detergent solution. Be sure that the microscope is
dry before using. For cleaning the painted parts or plastic
components, do NOT use organic solvents such as alcohol,
ether, acetone, xylene or other thinner etc.!
4. Cleaning optical parts:
In order to enhance the optical quality, the lenses of eye-
pieces or objectives are coated. They should not be wiped
because dry dirt or dust may scratch the coating. It is best
to remove the parts to be cleaned from the frame prior to
cleaning. Always blow loose dust away first. Use lens tissue
of good quality or soft fabric moistened with a small amount
of pure alcohol (available in the chemist's shop); wipe the
lens surface clean.
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