SVBONY 2 inch telescope moon filter is especially useful to owners of large aperture scopes;in which the Moon's brightness can be overwhelming. Maximum reduces glare for the observation of the moon and planets for a more comfortable and to increase the ability to catch faint details. Enhance lunar and planetary view. It can also be used for as a useful light pollution filter. Moon filter easier to observe. Good for eliminating the street light smog to deliver more clear and natural real image. It also will suppress sky glow from artificial lighting and background glow reflected when the moon is up. High quality metal frame with padded hard case. Fits for any standard 2 inch telescope eyepiece. The filters mainly improve contrast of lunar and planetary observation for take photos. Premium aluminum alloy frame and pure optical glass lens. 1.The 7nm dual band filter is designed to reduce the effect of light pollution; enhance the contrast and bring out the detailed information when imaging emission nebulae 2.you can enjoy the fun of deep sky photography anytime and anywhere in urban areas; the dual-band filter helps astronomy enthusiasts to perform deep sky photography in urban areas with serious light pollution or under a full moon 3.Lower the threshold for making astronomical works; the dual-band filter makes it possible to simplify and decrease the difficulty and cumbersomeness of post-processing for users 4.Compared with traditional black-and-white deep sky photography; dual-band filter can achieve a single exposure to capture large full-color images 5.Filter for use with DSLRs; and astronomical telescopes whose focal ratio is not less than F5.