Extends the focal distance of optical tube by 2x. For R135S: 720 to 1,440mm (f/10.7) For R150S: 750 to 1,500mm (f/10) Enables observation or photography at a higher magnification with your current eyepiece. Prime focus photography : possible(T Ring is required)
not in stock - ready to ship within approx. 48 hours
Shipping fees
