24 May
2010
24 May
'10
6:51 p.m.
Thanks Kurt, I was mainly interested in the magnification reduction with a given eyepiece, but the edge distortion is good to know about. I'm betting that better results would be obtained with more simple eyepiece designs such as Kellners or Plossls. With my new lathe, it's not even much of an issue any more, since I can make my own matched eyepiece pairs easily. The new lathe even has thread-chasing gears so I can thread my barrels for filters- something my old lathe lacked.