Using Filters - Celestron 44340 Instruction Manual

4. Use the objective nosepiece (12) to rotate the objective lenses (11) until the 4x objective lens is directly over the
specimen and clicks into place. Always start with the lowest power objective (4x with this microscope) which gives
you 40 power and work your way up to higher powers. At 40 power you will have the widest field of view and the
brightest image.
5. Look at the LCD screen while turning the focus knob (6) until the specimen comes into view. You may need to adjust
the stage movement knobs (Figure 5) slightly to center the specimen in the field of view.
6. With the 4x objective lens, you can also vary the power anywhere from 40x to 160x by using the digital zoom of the
LCD module. Use the direction keys (left/right) on the LCD module to use the digital zoom and in the bottom right of
the screen will be an icon of a magnifier indicating at what digital zoom setting you are at.
7. For higher powers, you will need to rotate the objective nosepiece to the 10x objective and to the 40x objective for the
maximum power. You will have to refocus when changing the power of the objective lenses. While using either of
these objective lenses you also can increase power by using the digital zoom.
Note: When changing objective lenses, lower the stage to its lowest position so you will not hit anything during the
rotation. Also, at the higher powers, be careful when raising the stage close to the objective lens so that the
objective does not hit the slide specimen (or other object) and cause damage.

Using Filters

Normally most viewing or imaging will be done without filters and before using check to make sure no filters are in the
optical path. However, to bring out different levels of detail, experiment with changing the color of the back lighting of the
specimen especially for very bright transparent specimens. To change the lighting color, rotate the color filter wheel
(Figure 6 below) to the desired color. Each color is centered when you hear the click stop. You may need to refocus by
adjusting the focus knob (6) slightly for best viewing. You should experiment with each of the colors to see the results.
Figure 6
You can take snapshots or a short video with your microscope with the built-in digital camera. With the internal storage
memory, you do not need to use a PC or any other devices to do imaging. Transferring of images to your PC for saving and
or printing them is easy and will be discussed later in this manual.
Note: If you are going to take images, do not connect the USB cable to your PC or damages could occur to the equipment.
The USB cable is not used at all for taking images.
Settings and Information for the Digital Camera
1. In the bottom left of the LCD screen is the EV (Exposure Value) which adjusts the brightness level. The normal
position is 0.0 and this can be adjusted in increments up to +1.2 to -1.2 by pushing the up/down directional keys.
2. In the bottom left of the screen is shown an estimate of the remaining snapshot images left in the internal memory.
3. In the top left of the screen is shown an icon of a camera which indicates it is ready for snapshot mode.
4. By pushing the directional keys (left/right) you change the digital zoom shown by a magnifier icon when you push the
keys.
5. Push the Menu Key to:
A. Mode – the normal (default setting) is "Single" for taking snapshots one at a time as you choose. You can change this
setting to "Auto" which will tell the camera to take snapshots at a predetermined time you set in the "Setting" choice.
B. Size – this sets the resolution you want for the image. The camera itself uses the 1600x1200 pixel arrangement
(2MP) but you can use digital interpolation to increase the resolution or you can use lower resolutions to increase
the number of images you can save in your internal storage memory. Use the directional keys (up/down) to make
changes and you will see the resolution setting at the top left of the screen.
C. Effect – you can change from Normal, to Black/White, Negative, or Sepia.
Color Filter Wheel
Digital Imaging
6