Quote:
Originally Posted by Wavytone
Bill how does the modified Erfle compare with traditional Erfles and modern variants such as SWA, all of which have strongly curved focal planes ?
|
Alas I no longer have any of those in the eyepiece stall. I do have the 2" Explore 25mm 70 degree eyepiece which is 5 elements and probably an Erfle, but it has been specially adapted to be used on a spotting scope so no longer can be used in standard focusers.