How do professional observatories deal with dew on mirrors and lenses?

As with amateur scopes, dew is a potentially harmful problem at professional observatories because the water that accumulates on optical surfaces can interfere with the telescope’s performance, and it may leave a residue that is difficult to remove once the water evaporates. Cleaning these surfaces frequently can be both expensive and impractical. Most professional instrumentsContinue reading “How do professional observatories deal with dew on mirrors and lenses?”
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