What should I do if the telescope lens is moldy?

Escort you from Yinan Forum|Problem details>>2012-11-08 The telescope lens is moldy. Many friends will have this question. The lens is made of glass, how can mold grow there? ? In fact, it is not the glass that grows mold, but the mold that breeds on the glass surface. If there are oil stains, stains, and fingerprints on the surface of the glass, they are the best nutrients for mold. Once the temperature and humidity are right, mold will naturally form. The acidic substances produced by the mold will corrode the coating, thereby destroying the glass. So how should we maintain the lens so that it does not become moldy, and what should we do with the lens that is moldy? Let me tell you: mildew on the telescope lens is mainly caused by moisture in the lens. Therefore, to prevent the lens from becoming moldy, you need to pay attention to the following five maintenance methods: 1. Before storing, clean the lens and wipe it. Remove fingerprints, dirt, etc. attached to the lens barrel and lens. 2. The lens should be stored in a dry place, put some desiccant in the container where the parts are stored, and keep it sealed. 3. Always check whether the desiccant becomes discolored due to moisture. If it changes color, it should be dried in time before use or replacement. 4. Always take out the lens to ventilate it during the day on a sunny day. 5. Do not seal it with a plastic bag or put it in a leather bag before putting it in a storage device. Store it in a dry container without packaging. The lens and body should be stored separately. So how to deal with moldy lenses? After the lens becomes moldy, do not disassemble and clean it casually. The size, shape, quantity and distribution of mold should be carefully observed first, and different measures should be taken according to different situations. If it is a small amount of mildew, it will not affect the overall imaging effect, so you can leave it alone for the time being. If you want to clean it, you can use an ordinary cigarette filter to remove the outer layer of paper, and wipe the outside and inside of the lens with cotton. You can also Go to the store that sells telescopes and ask them to professionally clean the inside for you. The price is not too expensive. It is recommended not to open it yourself.