kennt jemand zufällig das Partnerglas des Vixen Fl 102S?
Ist soviel ich weiß ein Steinheil Design mit der Sammellinse aus Fluorit hinten.
Das heisst dass vorne eine Negativlinse aus Glas ist?
Vorne war laut verschiedener Berichten das Partnerglas KzF2 verbaut.
Das schrieb Roland Christen (Astro Physics) am 12 July 2015 - 12:39 PM auf cloudynights.com zu dieser Glassorte:
"KzF2 or KzFN2 is the traditional short flint material which was used in
the TAK FC series of fluorite doublets (not used in the FS series).
This glass is not available anymore from Schott as far as I know due to
environmental problems. It was quite a nice glass to use, and I used it
in our Star12 series of refractors some 20 years ago. When Meade came
out with their doublets, they used KF3 as the mate, but again this
material is not available any more. KF3 does not produce as good color
correction as KzF2, but it's not bad.
Nowadays, there are a number of glasses that can be used to produce a
doublet, but none of them produce the same high corrections as KzF2."\
-RC
Cloudynights KzF2 Glass