Quote:
Originally Posted by Satchmo
Only the secondary mirror has no optical axis if it is possible to tilt it exactly in translation of its front surface ( which is never in reality possible) . The primary mirror optical axis and correcting lens set must in a corrected DK be initially centered to the optical axis by a fraction of a milimeter. 'Decenter tolerance ' is _not_ the same thing as 'optical spacing' tolerance : you seem to confuse the two.
|
It was the secondary to the main mirror i was talking about, just bad syntax i suppose .
Which is why i said the main mirror and lens group is laser aligned.
Theo