I know, some mods may be needed, but would it really be that hard to attach the red part to another scope? That plus some work on the ERF setup perhaps?
Mirko,
I would have to assume that the Quark element has temp controlled mica etalon and that somewhere inside the OTA they have mounted a x2 element..(this would bring the f15.5 objective to an acceptable f31)
I haven't seen any experimental mods on the solar forum(s), but nothing is impossible.