Hi,
I found the formulae - here's the files - the top level one is sun's position.vi.
Apologies in advance for the messy sub.vi's - my PC crashed (non LV related) so I had to start over on some of the files. I'll leave that as a tidying exercise for anyone who wants to.
Hope that these help.
btw, the design came from an example pogram by Keith Burnett. You can find that and other useful astronomical calculations stuff here :
http://www.btinternet.com/~kburnett/kepler/index.html
(thought I'd mention him as I simply did a translation job)
Thanks
S.
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