: Edward R. Cole kl...@acsalaska.net
To: jlv j...@fing.edu.uy
Sent: Thursday, September 08, 2011 1:12 PM
Subject: Re: [amsat-bb] Re: Magnetic North vs True North
At 07:30 AM 9/8/2011, you wrote:
True North
tip:
Look for the magnetic north with the compass, read their geographical
coordinate
R. Cole kl...@acsalaska.net
To: jlv j...@fing.edu.uy
Sent: Thursday, September 08, 2011 1:12 PM
Subject: Re: [amsat-bb] Re: Magnetic North vs True North
At 07:30 AM 9/8/2011, you wrote:
True North
tip:
Look for the magnetic north with the compass, read their geographical
coordinate
True North
tip:
Look for the magnetic north with the compass, read their geographical
coordinate in the GPS,
use this webpage
http://www.ngdc.noaa.gov/geomagmodels/Declination.jsp
and calculate the magnetic declination for their place.
You will know where this the true north using the
That works great when you are in the middle of your time zone, geographically,
which you and I appear to be. It wouldn't be quite so accurate if you were in
one of those absurd examples of politics trumping astrophysics, such as
Iceland, north-central Mexico, Argentina, or most of China which
Carl,
Please look at the FAQ provided by NOA, this should help:
http://www.ngdc.noaa.gov/geomag/faqgeom.shtml
If you are interested in the technical details of the IGRF, see:
http://www.ngdc.noaa.gov/IAGA/vmod/igrf.html
If I was not at work, I could provide a longer explanation.
Hope this
- Original Message -
From: Carl Rimmer W8KRF w8...@w8krf.net
To: amsat-bb@amsat.org
Sent: Tuesday, September 06, 2011 7:38 PM
Subject: [amsat-bb] Magnetic North vs True North
The earlier discussion on this topic caused me to think about my setup.
I know the tracking programs use True
On 9/6/2011 10:28 AM, Joseph Armbruster wrote:
Carl,
Please look at the FAQ provided by NOA, this should help:
http://www.ngdc.noaa.gov/geomag/faqgeom.shtml
If you are interested in the technical details of the IGRF, see:
http://www.ngdc.noaa.gov/IAGA/vmod/igrf.html
If I was not at work, I
- Original Message -
From: Vince Fiscus, KB7ADL vlfis...@mcn.net
To: i8cvs domenico.i8...@tin.it
Sent: Tuesday, September 06, 2011 11:02 PM
Subject: Re: [amsat-bb] Re: Magnetic North vs True North
Hi domenico,
I've always used the north star (Polaris) to set my rotor to true North
Carl, an easy way to remember is:
True (Variation, also called declination)
Magnetic (D deviation, compass error) Compass add
west, (or add east going the other way)
Two Virgins Make Dead Company add west
The V is Variation, also called declination M
Magnetic deviation(compass error)
