Our website would like to use cookies to store information on your computer. You may delete and block all cookies from this site, but parts of the site will not work as a result. Find out more about how we use cookies.

Login or Register

Powered by
Powered by Novacaster
 
Orthographic projection for astronomy
by Simon at 14:07 19/02/06 (Blogs::Simon)
Here's a very clear explanation, with diagrams, of how to construct and measure the azimuth of the major sun and moon events of interest at any particular latitude.

Handily, he's worked it out using lat 51° N which saves us all a bit of work :-)

http://www.geomancy.org/astronomy/orthographic-projections/index.php

Time to get the compasses out.

re: visit plans

Cheers
S.

<< Sometimes a dog's smile can be... Amenemipt cubit rod >>
View Comments (Threaded Mode) Printer Version
Orthographic projection for astronomy Simon - 14:07 19/02/06
Re: Orthographic projection for astronomy Simon - 19:25 19/02/06
Well, Adobe Illustrator's as good as compasses sometimes.

Here's the construction, overlaid on a plan of Stonehenge.

Solstice and lunar standstill azimuth positions overlaid on plan of Stonehenge

See the PDF for a resolution-independent version.
--
simon

Attachments...
GIF image (87 K) GIF version
PDF file (476 K) Resolution independent PDF version