An optional part of their modular Astro T-2 system, the Alpine Astronomical Baader 2" T-2 Nosepiece allows an array of accessories and eyepieces to fit into 2" drawtubes, focusers, and visual backs.
The nosepiece has both standard eyepiece filter threads and a second set of female T-2 threads to enable even more uses within the T-2 system. It also has male T-2 threads, which allow you to mount your T-2 accessories like the Baader Amici prism as well as a DSLR or imager for afocal and ocular projection photography techniques.