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Old 28-11-2018, 03:31 PM
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multiweb (Marc)
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multiweb is offline
Join Date: Oct 2007
Location: Hinchinbrook
Posts: 17,764
Originally Posted by Peter Ward View Post
The secondary centre spot as viewed with the Tak scope and laser spot agreed..but the laser is more telling when you look at the beam’s reflection back to the laser...small errors are decidedly more detectable that with the Tak alone.
Fair enough. So you move the secondary spider until the center spot and the laser coincide then adjust the tilt to have a perfect concentric reflection back on to the primary? Do you have enough rings spaced enough to do that given the short path and the secondary is convexe?
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