[Therion] Declination and the cs command

[Footleg]

I wasn't certain of the correct terms to use either, but I found this
on the British Ordnance Survey website:
http://www.ordnancesurvey.co.uk/oswebsite/support/knowledgebase/grid-north-magnetic-north-and-true-north.html

"The horizontal angular difference between True North and Magnetic
North is called MAGNETIC VARIATION or DECLINATION. The horizontal
angular difference between Grid North and Magnetic North is called
GRID MAGNETIC ANGLE."

Footleg

On 25 October 2012 15:51, Stacho Mudrak <lists at group-s.sk> wrote:
> When trying to implement new feature we have figured out in literature, that
> declination against grid north is called "needle deflection". Is this
> english term, OK? It means, instead of declination, you would specify
>
> needle-deflection 10 deg
>
> In Slovakia, we call it  "magnetic deflection". Or may be just
>
> declination-north grid
>
> would be sufficient. Any comments?
>
> S.
>
>
>
> On 14 October 2012 15:01, Ben Cooper <ben at caver.plus.com> wrote:
>>
>> Yes please - that would help a problem I have with the Upper Flood data
>> where much of the "old" data is declined against Grid North, and hence all
>> my "new" data has also been delcined to Grid North too.  When I add the CS
>> option, the data is rotated by 0.55 degrees (the Grid to True difference in
>> UK).
>>
>> (First posted Feb 2011 under subjects "CS and grid alignmenrt" and "grid
>> alignment rotation")
>> Ben
>>
>> ________________________________
>> From: therion-bounces at speleo.sk [mailto:therion-bounces at speleo.sk] On
>> Behalf Of Stacho Mudrak
>> Sent: 11 October 2012 16:49
>>
>> To: List for Therion users
>> Subject: Re: [Therion] Declination and the cs command
>>
>> Do you mean adding some option, that would specify, that given declination
>> is not against true but grid north?
>>
>> S.
>>
>>
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>
>
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