Hi Ron, no need to spend too much time on the seeing issue. Unless you live on a mountain top, you won't experience 1 arcsecond seeing very often (and possibly never). Most amateur sites are in the 1.5 (best) to 3 (or worse) arcsec seeing regime. If you set up CFZ for ~2 arcsecs seeing, you'll be fine with that 1/2 mark discussed previously. Then, if by chance you get lucky and get 1.5 arcsecs or better on that rare occasion, you're still likely to be fine. Hope that helps, Doug

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