er... collimation

[ving]

just a quicky...

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

GSO 8" dob. :cool:

[Striker]

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]

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]

thnx mr ice :)

your a leg end :D