NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Taking four stars for checking accuracy of fix - and "Cocked Hats"
From: Bill B
Date: 2008 Aug 05, 23:08 -0400
From: Bill B
Date: 2008 Aug 05, 23:08 -0400
Richard wrote > Second, I'm very reluctant to simply adjust the sight by a minute or > degree and add it to the round of sites; there is no assurance the cause > was as suggested, there's only a "good guess" as to the cause. Reasonable, but.... If have 5 observations, one off the calculated Hc line by a hair under or over a degree, it is almost certain that adding (my usual error) or subtracting a degree when reading or recorded was the culprit. Less confidence in a sight off by one-minutes time. I draw the line at using observations fixed by assuming I transposed seconds of time or minutes of arc, or misread by a minute of arc. Interesting to check them out to see if that was the possible blunder, but no confidence in using them. Bill B. --~--~---------~--~----~------------~-------~--~----~ Navigation List archive: www.fer3.com/arc To post, email NavList@fer3.com To , email NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---
