NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Summer Solstice
From: John D. Howard
Date: 2016 Dec 23, 18:28 -0800
From: John D. Howard
Date: 2016 Dec 23, 18:28 -0800
David, Brad,
The azimuth is easy Due North !
If the sun is too high for a LAN the set the mirror for north ( or due south for us winter folk ) and use what is called a sine bar to set the tilt.
A sine bar is used in machining to set very accurate angles. A bar has two round prutrusions on the bottom set at an accurate distance appart ( usually 5 inches ) then each round is set upon a stack or block - two different heights - and the angle is known by the sine of the difference of the two heights.
Using a micrometer the heights can be measured to 1/10000 inch.
I have not done the math but I don't think a degree or two would make much difference.
John H.
