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Digital Compass

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20 years 3 months ago #4417 by ctr
Digital Compass was created by ctr

Each of us is here on earth for a reason, and each of us has a special mission to carry out - Maria Shriver

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20 years 3 months ago #4418 by michaeloconnell
Replied by michaeloconnell on topic Re: Digital Compass
Cool !!!! 8)

I wonder does it compensate for the difference between true north and magnetic north :?:

Michael

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20 years 3 months ago #4432 by dave_lillis
Replied by dave_lillis on topic Re: Digital Compass
Doesnt that differnace depend where on th earths surface you are.
It would need GPS for that compensation ??

Dave L. on facebook , See my images in flickr
Chairman. Shannonside Astronomy Club (Limerick)

Carrying around my 20" obsession is going to kill me,
but what a way to go. :)
+ 12"LX200, MK67, Meade2045, 4"refractor

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20 years 3 months ago #4438 by michaeloconnell
Replied by michaeloconnell on topic Re: Digital Compass
I was wondering about that alright.
I think you may be correct.

Michael

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20 years 3 months ago #4460 by Eugene Burke
Replied by Eugene Burke on topic Re: Digital Compass
Not really
If you get your hands on a fairly recent admiralty chart for your area you will see the annual rate of decrease, in seconds, on a series of compass roses and you just use the one nearesr to you and that will give True North.

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20 years 3 months ago #4483 by dave_lillis
Replied by dave_lillis on topic Re: Digital Compass
Eugene,
I was implying over large distances it would be different
Since magnetic north and true north are not in the same place (magnetic north is somewhere near northern canada) this means that the US will find magnetic north much nearer to true north then we do here.
The differance between the 2 norths is called the magnetic declination (as fas as I remember), and from Ireland is something between 10 or 15 degrees.
It is also slowly changing, the magnetic north is on the move.

Dave L. on facebook , See my images in flickr
Chairman. Shannonside Astronomy Club (Limerick)

Carrying around my 20" obsession is going to kill me,
but what a way to go. :)
+ 12"LX200, MK67, Meade2045, 4"refractor

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