Quote:
Originally Posted by lazjen
Thanks for those - I'll start looking at them. (Espirit, 94EDPH and Stellarvue)
I've also found:
* Tele Vue-NP101is f/5.4
* Takahashi FSQ-85EDX f/5.3
* Takahashi FSQ-106EDX4 f/5
Significant price range across these options.
Can't seem to find anything suitable from APM, TEC or CFF.
Edit: William Optics Gran Turismo 81 IV f/5.9 (although it's not giving me as much difference as some of the other options). I noticed the Stellarvue were in a similar situation.
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CFF makes a 92mm F6 and a 105 F7. The field flattener is good for a 16803 sensor (50% larger than full frame). A Riccardi reducer works with these
giving F4.5 for the 92mm scope and F5.25 for the 105 F7.
My CFF 105 F6 has a test report showing 99.4% strehl in green. That is best strehl ratio I have seen. Ex Zeiss optician. Very high end.
APM also do a 105 F6 I think unless its F6.5.
TEC smallest refractor is the 140mm. They did make a 110 F5.6 briefly. I get the idea these smaller scopes are not good money earners.
Greg.