NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Dipmeter: was [NAV-L] Wires, back sights and collimation
From: Frank Reed CT
Date: 2004 Dec 1, 21:00 EST
From: Frank Reed CT
Date: 2004 Dec 1, 21:00 EST
Alex E wrote:
"The inverting one has collimation adjustment while
the upright one has none. The mountings are of course
absolutely similar.
Why?
Is this related somehow with higher magnification
of the inverting scope? But then why the 6x or 7x prismatic scopes
of modern sextants don't have it?"
the upright one has none. The mountings are of course
absolutely similar.
Why?
Is this related somehow with higher magnification
of the inverting scope? But then why the 6x or 7x prismatic scopes
of modern sextants don't have it?"
Myself, I can't think of any technical reason. Can you? I suppose simple
conservativism of design would be an explanation...
Frank R
[ ] Mystic, Connecticut
[X] Chicago, Illinois
[ ] Mystic, Connecticut
[X] Chicago, Illinois
