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advice for beginners is to read the theory manual first that how to use the telescope firstly, how to adjust the aperchure of the telescope, how to mount filters and so on. and you know the vaccum cleaner can pretty clean the glass and other parts of telescope to remove the dust particles over it, many time there are vapors rests on the glasses of telescope, that also has to clean up. first, to get a sharp look of the sky objects.
sunil
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