NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Eye problems and IE, IC
From: Richard M Pisko
Date: 2006 Jul 18, 02:01 -0500
On Mon, 17 Jul 2006 21:53:38 -0400, Bill wrote:
> I do feel confident that the astigmatisms play a large role in
> the shift from tangent horizontal vertical to tangent
> horizontal. That I can see, and to some degree measure.
>
Now if there were only some easy way you could keep the position
of the sextant the same, and tip your head from upright to
horizontal, then you would be testing only the astigmatism of the
one eye. A clamp and sturdy tripod, perhaps?
--
Richard, 2006-Jul-18 12:56:54 AM GMT - 6 hours for summer
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From: Richard M Pisko
Date: 2006 Jul 18, 02:01 -0500
On Mon, 17 Jul 2006 21:53:38 -0400, Bill wrote:
> I do feel confident that the astigmatisms play a large role in
> the shift from tangent horizontal vertical to tangent
> horizontal. That I can see, and to some degree measure.
>
Now if there were only some easy way you could keep the position
of the sextant the same, and tip your head from upright to
horizontal, then you would be testing only the astigmatism of the
one eye. A clamp and sturdy tripod, perhaps?
--
Richard, 2006-Jul-18 12:56:54 AM GMT - 6 hours for summer
--~--~---------~--~----~------------~-------~--~----~
To post to this group, send email to NavList@fer3.com
To , send email to NavList-@fer3.com
-~----------~----~----~----~------~----~------~--~---