What should I do if the telescope lens grows mildew?

Escort you from Yinan Forum | Details of Problems > & GT2012-11-08 The lens of the telescope is moldy. Many friends will have such questions. The lens is made of glass. How can it be moldy? In fact, it is not glass mold, but mold that spreads on the surface of glass. If there are oil stains, stains and fingerprints on the glass surface, it is the best nutrient for mold. If the temperature and humidity are appropriate, it will naturally become moldy, and the acidic substances produced by mold will corrode the coating and then destroy the glass. So how do we maintain the lenses so as not to be moldy and what should we do with the moldy lenses? Listen to my little brother's suggestion: the mildew of telescope lens is mainly caused by the lens being damp, so to keep the lens from mildew, we should pay attention to the following five maintenance methods: 1 Before storage, clean the lens and wipe off fingerprints and dirt attached to the lens barrel and lens. 2. The lens should be stored in a dry place, and some desiccant should be put in the container for storing parts and sealed. 3. On weekdays, always check whether the desiccant is affected with damp and discolored. If it changes color, it should be dried in time before use or replacement. 4, often in sunny days, take the lens out for ventilation. 5. Never put it into the storage device after it is sealed with a plastic bag or put into a leather bag. It should be stored in a dry container without packaging, and the lens and fuselage should be stored separately. So what should I do with moldy lenses? After the lens is moldy, it is forbidden to disassemble and clean it at will and rashly. First of all, we should carefully observe the size, shape, quantity and distribution of molds, and take different measures according to different situations. If it is a small amount of mildew, it will not affect the overall imaging effect, so it can be temporarily not cleaned; If you want to clean, you can use the filter of ordinary cigarettes to remove the outer paper and wipe the outside and inside of the lens with cotton. You can also go to the place where binoculars are sold in the mall and ask them to help you clean the inside professionally, and the price will not be too expensive. I suggest you don't open it easily.