- T-2 / M48 extension converts M48 female into T-2 female thread)
- Focusser side 48mm / 2" external thread (fits all 2" filters)
- Telescope side with T-2 internal thread
- 2.5mm optical path length
The #29 T-2 Expanding Ring converts internal M48 (2" Filter) threads to internal T-threads. The T2-29 has external M48 threads on one side, and internal T-threads on the other. This ring is particularly handy in adapting accessories, like the MPCC, to the front of eyepieces or other accessories that are threaded to accept standard 2" Filters (M48 thread).
Learn more about THE BAADER ASTRO T-2 SYSTEM™