A couple years ago a friend came across a Russian made 80mm triplet lens that was untested but had high potential. I've been interested ever since in knowing how this lens would stack up with the other high end apos out there once it was made into a complete scope. Well at astrofest I finally had a chance to see what it can do. It was the shorter focal length version of 480mm as compared to the 600mm. In daylight using artificial stars the scope with a 4mm eyepiece had textbook intra and extra focal diffraction paterns with no noticeable color. In focus views revealed a virtually perfect airy disk with perfect collimation. That scope is definately a winner and if they are all like that one this scope should be another of the high end small apos out there to be considered.
Apogee's new fluorite triplet
Started by ddrake, 09/15/2005 03:10AM
Posted 09/15/2005 03:10AM
| Edited 09/15/2005 02:46PM
Opening Post
Funding Member
