SVBONY Telescope Filter 1.25 inches Variable Polarizing for Astronomical Eyepiece

1.25 inch moon filter reduce the amount of light entering the eyepiece and increase the eyepiece contrast The moon filter reduces the glare;allowing transmission of only 13 percent of the reflected ligh;which means you can see the surface more clearly and study the Moon in greater comfort Have a standard 1.25 inch filter thread (M28.5 x 0.6).Finer control of the image brightness compared to a standard fixed-transmission telescope filter for optimal performance.Adjust the amount of light transmission from 1% to 80% by rotating the filter housing International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.