Quote:
Originally Posted by rally
This is using the standard 6 terms with everything rigidly mounted or attached via custom threaded adapters - there is no measureable flexure.
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Okay, my hat is off to you guys with the perfect super rigid refractors that don't experience anything that's not perfectly correctable with the standard six terms. Very cool. In that case I'd expect you do be able to reach 3 arc seconds RMS or better like one other refractor user I know. So what's holding you back? I'm quite envious.
