Re: [APML] Taurus cameras

["Tom & Lou Krajci" <krajcit@3lefties.com>]

From: "Bobby Middleton" <bobm@koyote.com>

> Anybody left out there who is familiar with the old Taurus cameras (C2)?

I have one...gathering dust.

> Is there an easy to way to calibrate one of these to exact critical focus
> with one's SLR? What I have in mind is to compose/focus with my F2 then
> switch to the Taurus.

I know you don't like K/E focus work, but if you do it carefully, you only
have to do it for one night of test/calibration on a full moon night.

Use a piece of glass across the rails of both camera bodies and rig up a
knife edge focuser.  Adjust and lock the focuser with the F2 body in place
after you get a good null with the KE focuser.  Then remove the F2 body, and
place the Taurus body in place and get a good KE null.  Then measure the
difference, or set up some sort of locking/spacer ring (like a parfocalizing
ring you can put on eyepiece barrels) so that when the F2 is in focus...the
Taurus is also in focus.

If you want to be extra careful, see if your setup is repeatable as you swap
camera bodies, and as you rotate the camera bodies to various orientations.

Hope this helps,
Tom Krajci


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