Telescopes of Captain James Cook.

David Knisely wrote in message ...
Thomas M wrote:

I thought the SCT principle was much younger than that...its an F6 SCT in
the article

The reflector in the article is not an SCT. It is a simple Cassegrain,
possibly Classical or Gregorian, as the Gregorians were often resorted to
during the era of the "brass" telescope (the tube length argues for a
Gregorian). The SCT is a different and much more recent design (circa 1962)
using spherical optics and a large corrector plate. Clear skies to you.
--
David W. Knisely
Prairie Astronomy Club: http://www.prairieastronomyclub.org
Hyde Memorial Observatory: http://www.hydeobservatory.info/

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What little I have read about James Short suggests it was a Gregorian
with a parabolic mirror. The guy was pretty impressive he made
something like 1,360 telescopes during his life.

Clear skys
James King