Celestron 4040 Руководство по эксплуатации - Страница 12
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entire field of view when viewing.
As you lower the condenser to spread out the light or change to a higher power objective,
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 (16) to let in more light. Opening and closing the diaphragm will give
a relief view of the specimen and allow you to change the depth of field of the specimen
being viewed.
Filters:
To bring out different levels of detail, experiment with changing the color of the back lighting of
the specimen. To change the lighting color, place one of the color filters in the light path by
placing it on the top of the illuminator (14). You may need to refocus by adjusting the fine focus
knob (9) slightly for best viewing.
Focusing:
To achieve the best focus with your microscope, not only can you make adjustments with the
coarse and fine focus handwheels, but you can also adjust the focus of each eyepiece
individually as well as the interpupillary distance between the eyepieces. To achieve sharpest
focus:
1. First rotate each eyepiece tube so that the scales read the same number (i.e. 60mm).
2. Change the distance between the eyepieces by sliding the eyepiece slide plate in or out
horizontally until the interpupillary scale reads the same as the eyepiece scales. (To adjust
the slide plate, grasp the knurled portion on each side of the plate. Do not hold the
eyepieces to adjust the interpupillary distance).
3. With the 10x objective lens, focus with one eye using the coarse and fine focus handwheels.
4. Adjust the eyepiece slide plate until the whole field of view can be observed through both
eyes at the same time without having to move your head side to side.
5. Now, read the number off of the eyepiece sliding plate scale. This is your interpupillary
distance.
6. Finally, set the scale on each eyepiece tube to read the same as the eyepiece sliding plate.
(Depending on your individual eyes, you may need to make slight adjustments to the right
and left eyepiece tubes for the most comfortable viewing).
Replacing the illuminator lamp:
1. Carefully lay the microscope back on its side so that the stand column (5) is flush against a
flat surface.
2. On the bottom of the microscope, locate and unscrew the knurled bolt that holds the lightbulb
compartment closed (see figure 4).
3. Open the light bulb compartment door.
4. Remove the old halogen bulb from its socket.
5. Use a tissue to hold the new bulb between your fingers and press the prongs into the socket.
6. Close the light bulb compartment and tighten the knurled screw.
Figure 4
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