Svbony SV158 2'' telescope eyepiece extension tube with protective brass ring.
|Dimensions (mm)||ɸ59*75mm||ɸ59*90 mm|
1. Svbony extension tube provides extra focuser back travel, often needed for short-range terrestrial viewing through a telescope, or for astrophotography applications
2. This is 2'' extension tube, fits in 2'' telescope focusers and accepts 2'' eyepieces or accessories