Isn't the TeleVue refractor line in the f/7 range? It makes sense that TV eyepieces would complement TV refractors. Brent, what do you think the Naglers would do on the Clark or other large, long doublet? I think the programs that plot spot diagrams do so for only one wavelength, don't they? I admire you're use of slower objectives. We're on the same page here for sure. While it doesn't have the resolution of my 10" f/5.6, my 6" f/8 is much more contrasty...much less diffraction, almost a "cleaner" image...does that make sense? C. --- Brent Watson <brentjwatson@yahoo.com> wrote:
My 12.5 is not a fast dob. It is f7.5. My problem with Naglers on the 10"f10 is one of internal reflections.
Since I got my Naglers the orhtos have gatheres a bunch of dust. That will change.
Brent
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