|
I'm using his design idea at the moment in construction of an 8" f/4 and rebuilding my 5" f/5 too. I'm doing the mods mostly because I find the tubes of commercial newts let the optics down. My 8", the tube creaks when slewing from east to west even with the rings 13" apart and no extra weight. (no cameras etc) and I've done the same test with the laser collimator in the focuser and saw the collimation shift between east and west.
|