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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Beginner
From: Bill B
Date: 2005 Sep 12, 13:57 -0500
From: Bill B
Date: 2005 Sep 12, 13:57 -0500
> And when I look through my earlier measurements, all sights from the > same "batch" (i.e those taken at about the same time and same set-up) > gives about the same error in offset. E.g when I have an error of 5' > in a sight, all sights taken at that time have about the same error. > I have not yet understood why, and I have too little statistical > material to give any conclusions about this. It might be coincidence. Asbj?rn If the error is relatively consistent within a batch, perhaps index error is the culprit. I have no first-hand experience with plastic sextants, but from what I have read IE appears to vary to much more within a batch, or from batch to batch, than does a metal sextant. Bill