Celestron Onyx 80EDF Manual del usuario - Página 5
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The exposure times listed here should be used as a starting point. Always make exposures that are longer
and shorter than the recommended time. Also, try bracketing your exposures, taking a few photos at each
shutter speed. This will ensure that you will get a good photo. Keep accurate records of your exposures.
This information will be useful if you want to repeat your results or if you want to submit some of your
photos to various magazines for possible publication!
CARE AND CLEANING OF THE OPTICS
Occasionally, dust and/or moisture may build up on the lens of your telescope. Special care should be taken
when cleaning any optical instrument so as not to damage the optics.
If dust has built up on the lens, remove the dust with a camel's hair brush or a can of pressurized air. Spray
at an angle to the lens for approximately 2 to 4 seconds. Then use an optical cleaning solution (available at
most optical suppliers) and white tissue paper to remove any remaining debris. Strokes should go from the
center of the lens to the outer edge. Do not rub in circles.
You can use commercially-made lens cleaner or mix your own. A good cleaning solution is isopropyl
alcohol mixed with distilled water. The solution should be 60% isopropyl alcohol and 40% distilled water.
Or liquid dish soap diluted with water (a couple of drops per one quart of water) can be used.
Internal adjustments and cleaning should be done only by the Celestron repair department. If your telescope
is in need of internal cleaning, please contact the factory for service.
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Celestron offers an extensive array of telescope accessories. Consult the Celestron Accessory Catalog
(#93685) for details.