Stereo Microscope Use (for solid objects)
As with the compound microscope, always begin your observation with the
4X
objective
and increase magnification accordingly.
Note:
Only the 4X and 10X objectives may be used when viewing solid
specimens. The 40X lens is not suitable for use with the upper lighting due to the
focusing distance required. The 40X lens must be too close to the specimen and
does not allow any light to reach the specimen.
For contrast, you may find it necessary to place certain specimens on an index
card or small piece of paper before centering them on the stage. Since you are
using the upper light, it is not necessary for the opening in the stage to be exposed
for the lower light to shine through. Also, you do not want your specimen to fall
through the hole!
This application can allow you to magnify countless everyday items: for examples,
small rocks, leaves, insects, flower petals, coins, stamps, jewelry and more.
Focusing Tips
You will notice that with a three dimensional specimen, for
example, a small insect, you will have different levels to focus on; therefore the
entire image may not seem clear at the same time. Compare it to a flat field, such
as a postage stamp, where the specimen is all at the same level which allows the
microscope to focus on the entire field.
8
Operation
Compound Microscope Use (for slides)
Begin with the stage platform at its lowest position. To observe specimens, check
the
objective lens,
and if necessary, rotate the
nosepiece
so that the
4X objective
lens
is in position for viewing. The lens will “click” when in place. Always start
viewing any specimen with the 4X objective and increase accordingly.
Begin by selecting a prepared slide and placing it carefully on the
stage
(labeled
side up). Push gently on the back of the
clips
to lift the clips enough to slip the
slide under and hold it in place. The main part of the specimen should be centered
over the opening in the stage.
Turn on the lower
illuminator
to shine the light up through the stage and through
the tissue specimen on the slide.
Use lower light for viewing slides
5
Remember to turn on the
overhead illuminator
Rotate the nosepiece
4X Objective
Rotate the nosepiece to 4X objective for
viewing and your image is magnified 40X
