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Re: body not aligned with reflection in artificial horizon
From: Alexandre Eremenko
Date: 2007 Nov 26, 20:17 -0500

David,

> On Nov 23, 2007, at 3:52 PM, landlocked wrote:

> > Have I not corrected enough for perpendicularity?  What
> > other error might this be?

In the list of the errors you corrected, you did not
mention collimation error. On many modern sextants
it cannot be corrected (except by hummering the fork:-)
but still it is recommended to check it.

Alex.

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