Orion 1.25" Shorty 2X Barlow Lens and Camera T-Adapter Double the power of any 1.25" telescope eyepiece with this T-adapter equipped Barlow lens Male T-threads allow secure camera attachment for high-magnification lunar and planetary astrophotography A great way to double the number of magnification options, without having to buy twice as many eyepieces Doublet lens system is multi-coated for excellent transmission and the internal housing is baffled to eliminate unwanted reflections and increase contrast Very compact - just 2-7/8" long - easy to store and carry