Hi guys. Hoping someone might be able to supply me with some info about my recently acquired Clavè eyepieces. I have looked through several threads and gleamed a good amount of info which has probably caused more confusion than clarity.
my set includes a 25, 16, 10, 6 and 4mm focal lengths.
so looks simple on the surface, but I'm not sure of which generations I have. The 10mm is side marked and so dates from 1982. This shouldn't have a filter thread but does! The stamp/print on the top of the eyepiece matches the top of the 16mm so I am thinking that that is also from a similar age. The 6 and 4mm seems to have slightly brighter clearer stamp on the top and I am assuming they are later. The 25 mm stamp looks different again and imo looks older. Don't know if there is a difference in this detail between generations?
I have come across a picture of the eyepieces dated 1990, but apparently the original owner had these during the 80s. Couldn't be earlier due to the 10mm being 82. I suspect the 25, 16 and def the 10 are 2nd gen, but the 6 and 4 could be gen 3 or early kinoptic, but I think the pre 90s kinoptic had a gilded band which mine doesn't.
so they all have blue/purple coatings and all have filter threads
(https://flic.kr/p/23YJ4Xm) which would suggest kinoptic but again, if someone has changed the barrel on the 10, have they changed the rest? Will probably never know but this seems like the best place to ask.
Any help greatfully received, thanks in advance,
Edited by Tuckstar, 03 February 2018 - 07:28 AM.