Has anyone had recent contact with Beat Kolher AOK Swiss? MjrTom did say in another post that he was ill. I have e-mailed a couple of times trying to purchase the threaded collars that attach either side of the Coronado PST etalon but have not heard anything.
Today I took delivery of a Baader 75mm D-ERF and a lens mount that I am going to use to interanlly mount the ERF to a TAL 100RS. I am aware some people on here are not keen on internally mounting the ERF but others on here have convinced me - no different than what happens when using a scope with a Herschel wedge, where all the solar energy enters the tube.
The lens mount is the one shown in the link:
http://www.thorlabs.com/thorProduct.cfm ... mber=LMR75
The only concern i had was that the D-ERF would actually fit into the mount. I e-mailed Teleskop Service who measured the D-ERF and said the Dia. was 75.00mm. Thor labs said the internal dia. was 75mm -0.0 +0.05. Those are pretty close tolerances! Thankfully they were both right, as the D-ERF did fit! Just a matter of keeping the two items parallel to each other.
Really keen to progress with this mod, just missing these components and ............... cutting the tube
hmy: Ian
Maybe that's the reason Beat is not answering at the moment
