er... collimation

[ving (David)]

just a quicky...

my secondary has 3 adjustment screws for moving it around and one big center screw.
what does the center screw do?

GSO 8" dob.

[Striker (Tony)]

Naughty naughty...you obviously didn't download and watch Iceman clip on collimating Newtonian's......I'm telling...ICE

http://www.users.on.net/~striker/chase.gif

[iceman (Mike)]

It moves the secondary away from the primary (when tightened) or towards the primary (when loosened).

But the 3 small screws need to be loosened first.

The 3 small screws then are for changing the tilt.

[ving (David)]

thnx mr ice

your a leg end