Quote:
Originally Posted by gregbradley
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.
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CFF - that's superb. The 92mm would be more what I had in mind. 6 to 9 month delivery time though.
The smaller scopes probably take about the same time to make as some of their larger counterparts and provide less margin overall.