Astromania 1.25" T-Adapter - Can Use Together with T-Ring - Connect a DSLR or SLR Camera to a Telescope All metal construction, anodic oxidation treatment. In effect, this device enables you to use the telescope lens as your camera lens for digi-scoping. 1.25" TO T2 adapter. Threaded for standard 1.25- inch astronomy filters Telescope Digiscoping Adapter. This is for one high-quality 1.25" to M42*0.75 Adapter.