GSO 1.25″ Moon Filter

GSO’s Moon filter is an economical yet high quality eyepiece filter for reducing the brightness of the Moon so greater detail can be observed on the lunar surface. Has 18% light transmission. Green tint helps reduce glare and improve contrast. Has a standard 1.25″ filter thread (M28.5×0.6) so it can be screwed on to virtually any astronomy eyepiece or accessory that has 1.25″ filter threads. Comes in a protective plastic storage box. Metal filter cell with high quality optical glass substrate (not plastic as some other similarly priced Moon filters). Made in Taiwan.