Outstanding! Thanks!
My implementation of Meeus's algorithms and tables from Astronomical
Algorithms is giving me positions of the celestial bodies within an
arcsecond for everything except the moon, where I'm seeing errors of over
ten arcseconds in declination in some testcases (Meeus says the error in
declination should generally be no more than four arcseconds). While ten
arcseconds is more than good enough for any celestial navigation application
(hell, 30 arcseconds would be good enough!), still I'd like to get the moon
right too. No doubt the NOVAS code will do the job.
Thanks again,
Tom Dacon
"Vic Fraenckel" wrote in message
...
Tom Dacon wrote:
| Hal, do you have a link to somewhere that has the NOVAS code?
Try
http://aa.usno.navy.mil/software/novas/novas_info.html
HTH
Vic
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