Re: [ATM] Celestron 20" R-C telescope

[Andy Saulietis <iss@pvtnetworks.net>]

>Why Two Truss Sections?

If properly designed, the 2-section Serrurier truss
keeps the telescope precisely collimated, since the
primary and secondary mounting assemblies will deflect
by equal and parallel amounts at varying elevation angles.
This design has been used in large professional telescopes
for decades.


Andy Saulietis
ISS Enterprises
10 Milky Way
Mayhill NM 88339


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