NavList:

[Note from FER (as NavList message boards manager), for context, the message below is in reply to a message written by Bill Murdoch in 2005 which you can read here:
http://fer3.com/arc/m2.aspx/how-are-tables-for-declination-generated-equation-etc-WSMurdoch-feb-2005-w22034]

Dear Mr Murdoch

Good afternoon

My name is Pedro Cabral, I'm 31 years old and I own and sail a Piver Nugget trimaran, which I keep in a swinging mooring 18 miles upriver from Lisbon, Portugal.

I'm also starting on the astronomical navigation hobby (with a Davis MK3 sextant), which I find a very rewarding past time even in these days of cheap GPS receivers...

I've allready been able to calculate some very decent fixes with my cheap sextant to within 4 miles of a known position but I'd like to create a calculator program for my Texas Instruments Nspire calculator to speed up the calculations part. While searching the web for some theory to start with I've came across this very useful tutorial of yours...

Anyway, while trying to implement the formulae I've noticed that on the expression for the Ecliptic Latitude of the sun you mention a variable called "Te2" (in the first line) which I can't seem to find anywhere else on the document... Is this an error?

Furthermore, I suppose the little square just before the "3600" in the end of the same expression to be a division sign, is this correct?

Thank you very much for any time you can spend in answering these two questions...

Best Wishes and thank you for publishing the article!

Pedro

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