Celestron 44340 Manual De Instrucciones página 5

Illumination
To get the sharpest and best views, the proper illumination (lighting) must be chosen.
1. To turn the illuminator(s) on, see Figure 4 below which shows the following four positions on the Illuminator Switch --
- OFF, I (Bottom Illuminator), II (Top Illuminator), and III (Both Bottom & Top Illuminators).
2. The top illuminator (11) is normally for solid objects (not specimen slides) so light shines down onto the object.
The top illuminator was designed to be used at low power (4x objective) as higher power objective lenses (10x & 40x) will
block the light. If you need to use high power to observe solid objects, use a secondary light (desk lamp, etc.) for
illumination.
3. The bottom illuminator (9) is used for specimen slides where the light shines up through the hole in the stage through
the slide.
4. Having both illuminators on at the same time can provide enough light for thick and irregular specimens.
Adjusting the Lighting
Specimens of different size, thickness, and color variations will require different levels of illumination. There are two ways
to change the amount of illumination when viewing a specimen; adjusting the brightness on the dial shown above in Figure
4 and changing the EV function on the LCD monitor. The EV (exposure value for brightness) function increases or
decreases the brightness level by using the up or down arrow keys on the LCD monitor.
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. This is best done by simply increasing the brightness of the illuminator by rotating the
brightness control dial all the way to its highest setting.
Optimum lighting will be found by experimenting with adjustments as each specimen may require slightly different
illumination as well as the same specimens viewed under different powers.
Viewing a Specimen
Your instrument is provided with a mechanical stage with a stage holder clamp and directional knobs –see Figure 5 below.
1. Use the clamp lever to open the clamping arm of the stage holder clamp.
2. Place a specimen slide (3" x 1" / 76.2 x 25.4 mm size) inside the holder and close the clamping arm against the slide.
3. Use the stage movement knobs to position the specimen over the opening in the stage. The rear stage movement knob
moves the X axis (forward and backward) whereas the front stage movement knob moves the Y axis (side to side).
Note: A vernier scale on both axes allows the exact marking and replication of an object in the field of view that the user
may want to come back to.
Figure 5
Figure 4
Illuminator Switch
Illuminator Brightness Dial
Clamp Lever & Clamping Arm
Front Stage Movement Knob. Rear Knob to the left
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