NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Mag. Var. in Australia??
From: Doug Royer
Date: 2004 Feb 18, 11:29 -0800
From: Doug Royer
Date: 2004 Feb 18, 11:29 -0800
Kieran,I have a few questions about the procedure used by Mr. Gregory to find variation. 1.In the example you posted what's the deal with takeing 1/2 the sum of PD,L and ALT? 2.There is a 360 printed.What does this represent? 3.Where did the 282* 35' azimuth angle come from?Or is it a Zn? 4.Is the Alt noted corrected or only an hs? 5.On the date stated the dec of the sun is a North dec.Why add the Lat as it is 18* 00' S when summing for PD,Lat and Alt? It appears these guys were comparing azimuth angles to find the variation.Is that correct? I'm just not clear on this to continue.
