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While your NexStar telescope requires little maintenance, there are a few things to remember that will ensure your telescope
performs at its best.
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
instrument so as not to damage the optics.
If dust has built up on the objective lens, you can remove it with a brush (made of camel’s hair) or a can of pressurized air. Spray
at an angle to the lens for approximately two to four seconds. Then, use an optical cleaning solution and white tissue paper to
remove any remaining debris. Apply the solution to the tissue and then apply the tissue paper to the lens. Low pressure strokes
should go from the center of the corrector to the outer portion. Do NOT rub in circles!
You can use a 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.
To minimize the need to clean your telescope, replace all lens covers once you have finished using it. This will prevent
contaminants from entering the optical tube.