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mick pinner
11-09-2005, 05:53 PM
could someone tell me where to find out what degrees true south is from magnetic south.
beren
11-09-2005, 06:08 PM
http://www.ngdc.noaa.gov/seg/geomag/jsp/struts/calcDeclination;jsessionid=E851BDAA 15CE4CE88933F14D7D874C2A

plug in your lat and long here
mick pinner
11-09-2005, 06:32 PM
thanks Stuart
cventer
12-09-2005, 11:31 AM
Good australian Government website for this sort of info

http://www.ga.gov.au/oracle/geomag/agrfform.jsp

Best Regards
Chris venter
firstlight
28-09-2005, 08:15 PM
Hmmm, interesting.

The Australian site agrees pretty much with Planetarium on my Palm (I have checked this previously using topographical maps) and the NOAA site is almost a degree out (0.8 to be acurate).

any thoughts?
firstlight
28-09-2005, 09:37 PM
Oops, NOAA was in minutes, while AGRF was decimal degrees.

Having a bit of trouble working out the maths if there is much discrepancy, (can't remember how to work the calc):shrug: