## Calculate azimuth from declination

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### Calculate azimuth from declination

In a paper from 1912, an observer wrote about one of the stone rows from the stone circle of Calanais (58 02 N, 06 45 W): "The azimuth of this alignment, combined with the altitude of the horizon seen along it, produce a declination of 6 43' N.
How did he calculate this and how would I calculate what the azimuth was with an altitude of 1 degree?
Deep Trout

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Joined: Tue Apr 26, 2016 7:46 pm

### Re: Calculate azimuth from declination

Hi there Trout,

The answer lies within the article:

For those who are interested it's here> http://adsabs.harvard.edu/full/1966JRASC..60...80S

The observer was not using the stones to find the declination or azimuth but was sighting using a theodolite to find the directions of the stones and the height of the tops and lintle.

So - To answer your question - He didn't calculate it at all. He measured it using 'modern' instruments.

I hope this helps, Barry.
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Supercooper

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### Re: Calculate azimuth from declination

Thanks Barry,
I guess there is no way to calculate what the azimuth was from the declination?
Deep
Deep Trout

Posts: 3
Joined: Tue Apr 26, 2016 7:46 pm

### Re: Calculate azimuth from declination

HI,

that wasn't your question. You asked how did he do it?

I'm sure you can work out an azimuth from a declination if you know local latitude.
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Supercooper

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Joined: Sun Feb 14, 2016 10:14 am

### Re: Calculate azimuth from declination

how would I calculate what the azimuth was from the declination knowing the latitude and altitude?
Deep Trout

Posts: 3
Joined: Tue Apr 26, 2016 7:46 pm

### Re: Calculate azimuth from declination

Deep Trout wrote:how would I calculate what the azimuth was from the declination knowing the latitude and altitude?

Brilliant screen name. Do you go trout fishing by any chance?
How can I be one with the universe when we don't know what 96% of it is.

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