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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Testing SNO after fixing
From: Alexandre Eremenko
Date: 2005 May 28, 16:27 -0500
From: Alexandre Eremenko
Date: 2005 May 28, 16:27 -0500
Fred, You wrote: > By my calculations with your two sets of sights, the mean and > standard deviation of Ho-Hc in minutes of arc were 0.096 +/- 0.195 > and 0.032 +/- 0.137. Were your previous sights this precise? I did not reduce each sight. Only the averages. My previous obsrvations with art horizon were generally less precise. And many of them showed systematic error (overshot). Same happened with star distances, with a larger error. What does the second number (after +/-) in your message mean? Maximal deviation from the average or standard deviation? (I suppose the first number is the average Ho-Hc). Alex.