NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Douglas Denny
Date: 2010 Mar 6, 17:52 -0800
Bill,
I have just sent a comment about the NASA technical reports site I have just discovered and have spent some hours looking at and downloading information.
There is so much information it is mind-boggling.
The Space sextant used by the 1970s - which is after some considerable research into irradiation and the use of manual navigation in Space, uses shades in the direct and/or index optical paths to bring the illuminance down for a bright Moon image, and recommends the brightest star image. It has a x8 telescope and a much finer index measuring resolution than ordinary sextants.
Irradiation is still a problem, but is better quantified by the 1970s.
more later..... time for bed it's late ..
Douglas Denny.
Chichester. England.
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