How are the Supermonos and the Zeiss monocentrics inferior? Has anyone compared the three eyepieces mentioned? I have compared two of the three and sense "inferior" to be a bit extreme.
Wouldn't "different" be a more appropriate word than "fake"?
Nope. Like I said, a MONOCENTRIC eyepiece by definition, is an eyepiece where the optical elements all have the same radii of curvature. A Hasting triplet doesn’t. Nor does a Steinheil triplet. You can use any word that you want, but the triplets are NOT Monocentrics.
Amd if you send me a true Monocentric, a TMB Supermonocentric (which is a Hastings triplet), and a Zeiss eyepiece labeled Monocentric (again another Hasting triplet), I’ll e glad to compare them and let you know.
Here’s a great discussion on Monocentric versus Hastings triplet by Chris Lord:
Pages 23, 24, and 25. In it Chris says, “These (true Monocentrics) are the most nearly perfect eyepieces ever designed, having highly corrected achromatic and orthoscopic fields, flat over the greater part, and very dark.”
Edited by SandyHouTex, 31 May 2020 - 06:32 PM.