NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Back In Hobby: Some Questions, Please
From: Ken Muldrew
Date: 2007 Apr 26, 12:49 -0600
From: Ken Muldrew
Date: 2007 Apr 26, 12:49 -0600
On 26 Apr 2007 at 14:23, Alexandre E Eremenko wrote: > > Nov. 14 > > alt LL 36�14'00" > > ind err 9'20" > > Temp 30�F, Lat 52�59'37" > > [53�01'] > > The number in square brackets is your best guess, > correct? How good and how reliable this best guess > on your opinion? Correct. For the two river crossings that I noted, the best guess is within 0.1 mile (the river has not changed course) but it's possible that Fidler took the observation from farther away than that but didn't record the exact location. For the others, I would say the longitudes are within +/- 1 mile and the latitudes are within +/- 2 miles (but most of them will be better than that). The Thompson data is better because we know exactly where he was through modern surveying of the archaelogical site. I have literally thousands of observations in Fidler's journals so I'm sure I can find better examples where the position is more certain, but he might also have a different sextant for those. If I find better data I will post it. Ken Muldrew. --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to NavList@fer3.com To , send email to NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---
