Quote:
Originally Posted by DougAdams
There seems to be some agreement about ...
1. using a cheshire to centre the secondary
2. use a laser to adjust the tilt of the secondary to hit the centre of the primary
3. use a barlow laser to center the primary
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Using a laser to adjust the tilt of the secondary will get it spot on, but i only beleive it needs to be that accurate when using the laser or barlowed laser technique to adjust primary tilt. A small error in secondary tilt will just result in a slightly tilted focal plane once the primary is aligned to it.
Using the cheshire cross hairs will get you pretty damn close so the laser is just a secondary tool here.