Adaptateur coulant 50.8 mm
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This ring comes to threading on all accessories SCT (Schmidt-Cassegrain). If you have equipped your SCT / MCT a slip focuser 2 "and want to continue using your specific accessories TBS (reference-angled, divider-optics, focal reducer, etc ...) or you have the intends to use these accessories on another instrument with a flowing focuser 2 "
Threads and features:
TBS thread is a thread of 2 "diameter with 24 threads per inch. It is present in the back of all telescopes like Schmidt-Cassegrain and new maksutov Cassegrain SkyWatcher.
The flowing 2 "is a smooth pipe of diameter 50.80mm wherein sliding accessories for telescopes and glasses.