Pentax To Telescope

thingiverse

Want to use your telephoto lens like a telescope? Now you can! It works with 1.25-inch eyepieces, but long-barreled ones won't fit. You'll need a lens that lets you manually adjust the aperture or find a way to keep the lever open - tape will do the trick. Version 2 has improved eyepiece alignment, a stable internal space, and a shorter focal length, so your eyepieces will focus properly. You shouldn't need any extra support, but I had trouble getting them to fit together right; a reprinted version worked much better.