For a clear and comfortable view of the stunning details of the Moon, the Orion 1.25 in 13% Transmission Moon Filter is just the tool you need. Thread it directly onto the 1.25 in barrel of your telescope's eyepiece. Boost the contrast, reduce the glare, and gain descernment of the lunar surface. This filter's neutral color won't alter the natural colors of the Moon - it simply transmits 13% of incoming light, resulting in clear and comfortable viewing.