NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Lunars with SNO-T
From: Bruce Stark
Date: 2004 Oct 24, 14:56 EDT
From: Bruce Stark
Date: 2004 Oct 24, 14:56 EDT
Alex,
You wrote:
"It is of course incredible,
but it looks like those people who
designed SNO-T had Lunars in mind:-)"
I'm wondering if, for some reason, they had land-based observations in mind. To measure a 70 degree altitude with an artificial horizon you have to have an instrument that can measure 140 degrees. And, if you want to measure large angles accurately, you need a way to keep the plane of the sextant and plane of the observation parallel.
Those wires in the inverting scope are quite handy when measuring large angles.
Bruce
You wrote:
"It is of course incredible,
but it looks like those people who
designed SNO-T had Lunars in mind:-)"
I'm wondering if, for some reason, they had land-based observations in mind. To measure a 70 degree altitude with an artificial horizon you have to have an instrument that can measure 140 degrees. And, if you want to measure large angles accurately, you need a way to keep the plane of the sextant and plane of the observation parallel.
Those wires in the inverting scope are quite handy when measuring large angles.
Bruce
