Okay so your
estimate of 10mm (which you say is accurate
) divided by 8 passes = laser scribing a circle on the primary of a 1.25mm radius. Is that right?
Q 1. Is that a severe enough error for an autocollimator to negate the benefits?
Q 2. Wouldn't most lasers and or laser+focuser give errors of at least that?
Thanks for your time.
Richard