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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Mag. Var. in Australia??
From: Doug Royer
Date: 2004 Feb 19, 11:31 -0800
From: Doug Royer
Date: 2004 Feb 19, 11:31 -0800
> -----Original Message----- > From: Royer, Doug > Sent: Wednesday, February 18, 2004 11:30 > To: 'navigation-l@listserv.webkahuna.com' > Subject: Mag. Var. in Australia?? > > 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.
