Hi all: I have a basic understanding of what these coordinates are, but do not know how to convert them to altitude and degrees relative to north (say using a compass and accounting for compass declination-here in NY it's 13 degrees West) for my location. Does anyone know? I have an altitude gauge (which is pretty handy) and a compass.No setting circles.There's probably a program that can do this, but I would like to understand how to do it myself.
Hi, Phil; here's something you can code up! >>>
I derived that (from scratch) way back in ~1980, and it works fine! The N reference is true north, using Polaris. If you are using magnetic north, you can use that instead... but it wouldn't be as accurate. Couple errata fixed in pencil.
There are LOTs of ways to skin this cat, but the imbedded math won't really be any simpler, if you are into that stuff. My equations are scalar, I would suggest using vector, provided you have vector operators available or can just write them (what I more often do). Lets see... my Az clocking is non-traditional increasing from NWSE. That's about it.
I have fancier analysis that accounts for various systematic mount errors and works better than most commercial stuff, even today.
BUT: I'd strongly recommend taking Tony Flanders advice up there... just access stuff that is already out there. Tom