I bought this, thinking I was going to do a bunch of astrophotography, but used it once and no longer own a telescope 🙁
Basically brand new. I used it once and it has sat in a box ever since. No box, but I do have the instructions.
If you don't know what it is for, it is used to align the optics in a telescope, usually for a newtonian or dobsonian type reflector.
Filed under: Eyepieces & Accessories