After recieving my ASA N12 F3.8 Newtonian Astrograph I needed a high quality and accurate method to precisely collimate the fast F3.8 optics, so I went with the CATSEYE range of passive collimatin tools.
I purchsed the following:
2.00"/15" Max.
TELECAT XL + INFINITY XL
COMBOSET PRO XL Kit
Which includes the TELECAT sight tube/cheshire tool and the INFINITY autocolimator.
While I wait for my FLI camera, collimating is a good thing to practise to fill in the time
I thought many on this group have Newtonians and might benifit from the instructions I have put at my web site describing how to use these tools?
http://www.pbase.com/strongmanmike20...th_the_catseye
Everything looks text book but the proof will be in the pudding once I can test it with a large CCD chip at the focal plain
Cheers
Mike