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Re: bubble sextant index error
From: Mike Hannibal
Date: 2005 Dec 11, 10:52 +1100
From: Mike Hannibal
Date: 2005 Dec 11, 10:52 +1100
Hi Bill,
wading in here without full knowledge...however: Won't the intercept be a combination of all of the errors? The IE, Observational Error, Timing Error....etc?
As an example using a standard marine sextant with known IE and known position of the user, once corrected for IE my intercepts represent my capacity to execute an accurate sight. Is it different with a bubble sextant?
Regrds
Mike
Bill <billyrem42@EARTHLINK.NET> wrote:
wading in here without full knowledge...however: Won't the intercept be a combination of all of the errors? The IE, Observational Error, Timing Error....etc?
As an example using a standard marine sextant with known IE and known position of the user, once corrected for IE my intercepts represent my capacity to execute an accurate sight. Is it different with a bubble sextant?
Regrds
Mike
Bill <billyrem42@EARTHLINK.NET> wrote:
> So, how do I determine the index error of my bubble sextant without a water
> horizon?
Michael
If your location is known, make a series of observations. After adjusting
for refraction, the difference between your observation and calculated Hc
will be the IE.
Bill
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