For a clear and comfortable view of the stunning details of the Moon, the Orion 2 in. 13% Transmission Moon Filter is just the tool you need. Thread it directly onto the 2 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.