TS 50mm Extension Tube for 6" and 8" RC Focusers
GSO 50mm Extension Tube for 6" and 8" Ritchey-Chretien Telescopes
GSO RC Telescopes have a long back focus making this system ideal for the use of off-axis-guiders and / or focal reducers. But in standard use, the long back focus may have problematic side effects: for many applications, the focuser must be extended and it still needs extension on the eyepiece side that is not a mechanically recommended solution.
The GSO extension tubes are placed between telescope and focuser
The advantages of this solution can bee seen clearly. The focuser is always in an optimal position and ususally needs no further extesion with a sometimes problematic lever arm. The free aperture is significantly larger.
|Weight in Kg||0.15|