I generally use..

polarizing filters when I do outdoor shots - especially beach shots.. But it didn't occur to me to use one for shooting the moon - not sure how it will help, but always willing to experiment... But, my 1600mm lens won't fit the filters fro my regular Nikon lenses, but I have several different sizes for different cameras over the years - I may get lucky and have one fit.. if not, they're fairly cheap..

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Friendship is like peeing your pants.. Everybody can see it, but only you can feel the warmth..