NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Accuracy of sextant observations at sea
From: Jeremy C
Date: 2010 Nov 9, 09:29 EST
From: Jeremy C
Date: 2010 Nov 9, 09:29 EST
Hi Gary,
My memory is a bit fuzzy on this topic. I think you are asking my
standard deviation for my intercepts on my last big voyage in 2009? If so,
I thought I had posted it. Perhaps I forgot.
Here's what I have
Standard deviation in minutes of arc for various bodies from which I
obtained LOP's Some have a lot more data points than others. I also
grouped all of the stars together as I was not motivated enough to list all
of the ones I shot. I shot stars the most, followed by the Moon, Venus,
Jupiter, Sun, Mars and Saturn.
Sun: 0.50
Moon: 0.65
Stars: 0.84
Venus: 0.70
Mars: 0.45
Jupiter: .68
Saturn: 0.4
All sights: 0.80 over 552 individual observations.
If this isn't what you are looking for, let me know.
I am back on the ship now, so hopefully when we leave the anchorage, I can
get some more sights.
Jeremy
In a message dated 11/9/2010 2:30:00 P.M. Central Asia Standard Time,
glapook@pacbell.net writes:
Jeremy, have you gotten around to analyzing the intercepts?
gl
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