7pcs filters set include most popular color planetary and moon telescope eyepiece filters; moon filter; CPL filter; 5 color filters with 23A bright red; 21 orange; 12 yellow; 56 bright green; 82A bright blue
High quality aluminum alloy frame and optical glass with standard 1.25” filter threads suitable for 1.25” eyepieces and other accessories
UHC filters or light pollution reduction filters are designed to selectively reduce the transmission of certain wavelengths of light; especially those produced by artificial light
Sky background is darker; and contrast of emission nebulae are noticeably improved; the perfect filter for viewing nebula from light polluted skies; or for boosting the contrast of nebula from dark sky sites
1.25'' barrel diameter simply attach to eyepiece cased in a sturdy transparent case; standard filter thread for 1.25" eyepieces and other accessories