CELESTRON 44131 Labs Compound Binocular Microscope Instruction Manual

: July 17, 2024
: Celestron

Table of Contents

44131 Labs Compound Binocular Microscope
IN THE BOX
PARTS
SPECIFICATIONS
MAGNIFICATION TABLE
SETTING UP YOUR MICROSCOPE
VIEWING A SPECIMEN
ADJUSTING THE LIGHTING
CARE, MAINTENANCE AND WARRANTY
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

CB2000CF
Model # 44131

44131 Labs Compound Binocular Microscope

Congratulations on your Celestron Labs microscope purchase. Your new Celestron Labs microscope is a precision optical instrument, made of the highest quality materials to ensure durability and long life. It is designed to give you a lifetime of enjoyment with minimal maintenance.
This CB2000CF microscope provides powers from 40x up to 2000x. It is ideally suited for examining specimen slides of yeasts and molds, cultures, plant and animal parts, fibers, bacteria, and more.
Before attempting to use your Celestron Labs microscope, please read these instructions to familiarize yourself with the parts and functions of the microscope.
Refer to the microscope diagrams to locate the parts discussed in the manual. The final section of the manual provides simple care and maintenance tips.

IN THE BOX

– Microscope CB2000CF
– 4 objective lenses: 4x, 10x, 40x (spring- loaded), 100x (spring-loaded)
– 2 sets of wide field eyepieces: (2) 10x with pointer, (2) 20x
– 10 prepared slides
– 3 colored filters

PARTS

CELESTRON 44131 Labs Compound Binocular Microscope

Eyepiece (ocular lens)
Eyepiece Diopter
Head Locking Screw
Nosepiece
Objective Lenses
Mechanical Stage
Iris Diaphragm
Abbe Condenser
Illuminator
Power Switch
Stage Holder Clamp
Binocular Head
Arm
Coarse Focus Knob
Stage Control Knobs
Fine Focus Knob
Illuminator Adjustment Wheel
Base

SPECIFICATIONS

STAGE: Mechanical Stage – 4.3 in x 4.7 in (110 mm x 120 mm)
HEAD: Binocular with 45° incline
MAGNIFICATION RANGE: 40x to 2000x
FOCUSER: Coarse and Fine Focus Knobs
OBJECTIVES: Achromatic 4x, 10x, 40x, 100x
EYEPIECES: WF 10x with pointer, WF 20x
NOSEPIECE: Quadruple with click stop
ILLUMINATOR: Halogen, adjustable
CONDENSER: Abbe N.A. 1.25
DIAPHRAGM: Iris
DIMENSIONS: 7.25 in x 8.75 in x 15.25 in (184 mm x 222 mm x 387 mm)
WEIGHT: 7 lbs – 12 oz / 3.52 kg

MAGNIFICATION TABLE

Use the following table to determine magnification using your microscope’sdifferent eyepiece/objective lens combinations.

OBJECTIVE LENS:
4x 10x 40x 100x
WF 10X EYEPIECE:
40x 100x 400x 1000x
WF 20X EYEPIECE:
80x 200x 800x 2000x

SETTING UP YOUR MICROSCOPE

Remove the Styrofoam container from the carton.
Carefully remove the microscope and accessories from container and set them on a table, desk, or other flat surface.
Remove bag coverings from microscope and binocular head (12).
Remove cap on microscope arm (13).
You may need to loosen the head locking screw (3).
Insert the binocular head (12) into the microscope arm (13) and tighten the head locking screw (3).
Remove caps from the eyepiece holders on the binocular head (12).
Remove the eyepieces from plastic bags.
Insert the 2 WF 10x eyepieces into the eyepiece holders on the binocular head (12).
Remove the 4 objective lenses (5) from their containers. Unscrew the container lids from the threaded portion of the objective lenses.
Remove caps on the nosepiece (4).
Using caution, thread the end of the 4x objective lens (color coded red) into one of the holes on the nosepiece (4) thoroughly until its finger tight. It may be necessary to lower the mechanical stage by turning the coarse focus knob (11) counterclockwise.
Now turn the nosepiece (4) to the next opening and thread each of the remaining objective lenses into the remaining holes.
Remove power cord from bag. Plug the power cord into the socket on the back of the base (18).
Insert the plug end of the power cord into the proper power source.

MICROSCOPE OPERATION
Before viewing specimens, please read these sections thoroughly regarding focusing, changing power (magnification), using the stage and adjusting illumination.

VIEWING A SPECIMEN

The images you see in your microscope will be upside down and reversed right to left.
Your microscope includes prepared slides to help you get started.
Your microscope is equipped with a mechanical stage (6) with a stage holder clamp (11) and directional knobs (15).

Use the clamp lever to open the clamping arm of the stage holder clamp (11).
Carefully place a prepared specimen slide (3 in x 1 in/76.2 mm x 25.4 mm size) inside the holder and close the clamping arm against the slide.
Use the stage movement knobs (15) to position the specimen over the opening in the stage (6). The large stage movement knob moves the X-axis (forward and backward), while the small stage movement knob moves the Y-axis (side to side).

NOTE: To position the specimen directly under the objective lens, close the opening on the iris diaphragm until it is almost completely closed by moving the small lever. You should see a small beam of light projected on to the specimen slide. Now use the stage movement knobs to move the specimen directly inside the beam of light.
You are now ready to focus and view the specimen. Use caution to avoid damaging the slide or object. When using higher powers while focusing, make sure the objective lens (5) does not hit the slide or specimen.

Start with the lowest power (4x objective lens and WF 10x eyepieces). Rotate the nosepiece (4) to change the objective lens (5) until the 4x objective lens is directly over the specimen.
Rotate each eyepiece diopter (2) clockwise so that they are all the way down.
Adjust the distance between the eyepieces by sliding the eyepiece in or out horizontally. Grasp the knurled portion of each side of the plate to adjust the plate.
While looking through the eyepieces (1), gradually turn the coarse focus knob (14) until the specimen comes into view. Use the fine focus knob (16) to obtain a more precise focus. You may need to adjust the stage movement knobs (15) slightly to center the specimen in the field of view.
Adjust the eyepiece side plate until the whole field of view can be observed through both eyes at the same time without moving your head side to side.
Depending on your individual eyes, you may need to make slight adjustments to the right and left eyepieces for the most comfortable viewing. Move the diopter (2) up or down until you have the specimen slide in sharp, comfortable focus.
For higher powers, rotate the nosepiece (4) to change the objective lens (5) to 10x, 40x or 100x. This will yield a greater magnification. Gradually turn the coarse focus knob (14) to refocus on the specimen.
NOTE: To be safe, you should first turn the coarse focus knob to lower the stage, before turning the objective carriage.)
You can replace the WF 10x eyepieces with the WF 20x eyepieces to obtain four additional high power magnifications, including (2000x), the highest power possible.

ADJUSTING THE LIGHTING

Specimens of different sizes, thicknesses, and colors require different levels of illumination. There are three ways to changethe amount of illumination when viewing a specimen: adjusting the illumination using the illumination adjustment wheel (17), adjusting the Abbe condenser (8) and adjusting the iris diaphragm (7).

ADJUSTING THE ILLUMINATION
When viewing a specimen that is not transparent or dark in color you may need to increase the amount of light to resolve certain features or details. To do this, increase the brightness of the illuminator by turning the illuminator adjustment wheel (17) all the way to its highest setting.
ADJUSTING THE CONDENSER
When viewing with lower power (4x and 10x) objective lenses, you will need to lower the condenser lens in order to spread the light over the larger field of view. To change the position of the condenser (8), rotate the Abbe adjustment knob until the beam of light spreads wide enough to illuminate the entire field of view.

ADJUSTING THE IRIS DIAPHRAGM
As you lower the condenser (8) to spread out the light or change to a higher power objective lens, your image will appear dimmer. Instead of increasing the light intensity of the illuminator (which may “wash out” fine detail of the specimen you are viewing), open the aperture of the iris diaphragm (7) by moving the lever to let in more light. Opening and closing the diaphragm (7) will give a relief view of the specimen and allow you to change the depth of field of the specimen being viewed.

USING FILTERS
To bring out different levels of detail, experiment with changing the lighting color.
To change colors, open the filter holder on the bottom of the diaphragm (7) by pushing it counterclockwise. Place the color filter in the filter holder and close it. You may need to refocus by adjusting the focus knobs.

CARE, MAINTENANCE AND WARRANTY

Your Celestron Labs microscope is a precision optical instrument and should be treated with care at all times. Follow these care and maintenance suggestions and your microscope will need very little maintenance throughout its lifetime.

When you are done using your microscope, remove any specimens left on the stage.
Turn off the power and unplug the power cord (if applicable).
Always place the plastic bag or dust cover over the microscope when not in use to help keep it clean.
Store the microscope in a dry, clean place.
Be very careful if using your microscope in direct sunlight to prevent damage to the microscope or your eyes.
To carry your microscope, place one hand on the “arm” of the microscope and the other hand under the base for support. Do not grasp your microscope by the focuser knob or head.
Clean the outside surfaces (metal and plastic) with a moist cloth.
Always unplug any cords before cleaning.
Never clean optical surfaces with cloth or paper towels as they can scratch optical surfaces easily. Instead, use an air blower or camel hair brush.
To clean fingerprints off of optical surfaces, use a lens cleaning agent and lens tissue available at most photo supply stores. When cleaning, do not rub in circles as this may cause streaks or scratches.
Never disassemble your microscope or clean internal optical surfaces. Only qualified technicians at the factory or an authorized repair facility should attempt these repairs.
When handling glass specimen slides, use care, as the edges can be sharp.

YOUR MICROSCOPE HAS A TWO YEAR LIMITED WARRANTY.
for more detailed information, please visit www.CelestronLabs.com

Torrance, CA 90503
TEL 800-421-9649
www.CelestronLabs.com
Copyright 2014 Celestron
All rights reserved.
(Products or instructions may change without notice or obligation.)
Designed and intended for those 14 years of age and older.