General Brand OM Lens to Telescope Adapter

This Olympus OM Lens to Telescope Adapter - to Convert OM Lens into Telescope allows you to convert your Olympus OM SLR lens into a telescope. By attaching this eyepiece to the back of a lens you can now view directly through the lens, as you would with any standard telescope.

Not ideal for terrestrial viewing, since no erecting prism is included in this design.