Celestron Moon Filter | 1.25"

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Celestron Moon Filter | 1.25" Reduce glare and increase contrast of the Moon with the Celestron 1.25” Moon Filter Also useful for extra bright planets as well as terrestrial viewin g over sand or snow Threads onto most 1.25” eyepieces in seconds Celestron's Moon Filters are economical eyepiece filters for reducing the brightness of the moon and improving contrast, so greater detail can be observed on the lunar surface.The clear aperture is 21mm for the 1.25" filter. Transmission is about 18%. In the Box Celestron Moon Filter (1.25") Show more