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Old 22-12-2011, 09:14 PM
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multiweb (Marc)
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Join Date: Oct 2007
Location: Sydney
Posts: 22,060
Quote:
Originally Posted by mldee View Post
Noted the board with the wheels to rotate the OTA, what I can't see is if you have any way of adjusting the board rear elevation and azimuth or if these are really that critical.
The wheels are there so I can rotate the tube and align its orientation to the board cross. I have 4 marks at the edge of the primary with white tipex. When the laser hits the white paint it really shines so you know you're on the registration marks. Then I 'shim' the whole wooden plank up or down. I usually slide a dovetail under forward or backward for level then shift it sideways to get the cross lateraly. The registration of the board to your primary must be spot on. If it's not you'll set your scope out of whack in no time.
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