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Robert:

Rocking the sextant only shows that the body is indeed misaligned.
That is, the body which is typically to the left of the mirror or pan
of oil will become aligned when rocked to the right, yes.  But rocking
raises the object above the bottom of its rocked arc, and this assures
that alignment is false, and therefore, that the reading is
inaccurate.

I think I just need to get better at correcting the sextant for side
error or perpendicularity.

I'll keep you posted.

David C.

On Nov 24, 9:28 pm, "Robert Eno"  wrote:
> David
>
> Try rocking the sextant as you would for a sea horizon observation. This
> should do the trick, unless I have misunderstood your question
>
> Robert
>
>
>
> ----- Original Message -----
> From: "landlocked" 
> To: "NavList" 
> Sent: Friday, November 23, 2007 3:52 PM
> Subject: [NavList 4064] body not aligned with reflection in artificial
> horizon
>
> > Even after adjusting my sextant as well as I can for perpendicularity
> > and side error, I still have the following problem when using an
> > artificial horizon:  When I bring the body down to the horizon
> > (regardless of whether it's a pan of water or a mirror), the "brought-
> > down" body is well to the left of the body reflected in the artificial
> > horizon.  Have I not corrected enough for perpendicularity?  What
> > other error might this be?
>
> > David C.- Hide quoted text -
>
> - Show quoted text -
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