Re: [ATM] Newtonian Alt-Az with Level Focuser Position

[Andy Saulietis <iss@pvtnetworks.net>]

Re level focusers,

>Now, the scope is WAY out
>of balance, so you'll need to build another tube (truss assembly, whatever)
>ahead of the focuser cage and weight it to make the balance point also
>coincide with the focuser axis.  Think of it as a really big, heavy dew
>shield.

Or, one could build a conventional Newt OTA with a spring mechanism
to make it balance..maybe with a torsion spring co-axial with the focuser but
on the opposite side, reacting against the fork on that side. Do a search for
Tom Krajci's spring balancer.

Lots of ways to skin this Cat..er, Newt

Andy

Andy Saulietis
ISS Enterprises
10 Milky Way
Mayhill NM 88339


World's first astronomy land development:

http://www.pvtnetworks.net/~iss/starend1.htm

16 of 17 lots sold to astronomers as of 3/03/06

505-687-3067 voice/fax, call voice or e-mail to set up
e-mail: iss@pvtnetworks.net

Also available: 25 & 50 mm manual filter wheels,
HDPE worm gears & clutches, HDPE friction drives,
CCD sliders & turrets, custom telescope parts machining.



_______________________________________________
ATM mailing list http://www.atmlist.net/