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Figure 11. A star test will determine if a telescope’s optics are properly collimated. An unfocused view of a bright star through the eyepiece should appear as illustrated on the right if the optics are perfectly collimated. If the circle is unsymmetrical, as in the illustration on the left, the scope needs collimation.
circle (Figure 11). If the image is unsymmetrical, the scope is out of collimation. The dark shadow cast by the secondary mirror should appear in the very center of the
If you try the star test and the bright star you have selected is not accurately centered in the eyepiece, the optics will always appear out of collimation, even though they may be perfectly aligned. It is critical to keep the star centered, so over time you will need to make slight corrections to the telescope’s position in order to account for the sky’s apparent motion.
Collimation of the optical system is now complete. Go out and enjoy the view! The alignment of the mirrors should not need to be adjusted again unless the telescope is handled roughly. If you handle the telescope gently during trans- port, then only slight adjustments will need to be made to the mirrors. Use the LaserMate Pro before each observing session to check and make adjustments to the mirrors as needed.
Care and Maintenance of Your LaserMate Pro
Your LaserMate Pro is manufactured of the highest quality components and is carefully aligned and tested at the factory. Like all electronic equipment, it should
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be handled with care. Although alignment is guaranteed for life common sense care should be taken to keep the LaserMate Pro or its components from being damaged. It should not be exposed to water, dust, heat or sunlight. To extend battery life store in a cool, dry environment.
Installing New Batteries
When the LaserMate Pro’s laser beam starts to dim or completely fades, it is necessary to install a new battery. To change the battery, you must remove the top of the LaserMate Pro’s power button housing. Simply unthread the top and remove the battery. The LaserMate Pro requires one CR123A battery. Place the battery in the opening so that the positive (+) terminal is facing the open end of the battery compartment.
Remove the spent battery and install the fresh battery. The batteries should be inserted so that the positive (+) end of the battery faces the open end of the battery compartment. After installing a fresh battery, replace the top of the LaserMate Pro power button assembly. Battery life is approximately three hours, so remember to keep the LaserMate Pro turned off when not in use to maximize battery life.
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