Math of a SunFlower... How to calculate the azimuth and elev

[SunFlower]

Sorry, this is not directly related with the electronics. But I thought
people on this group who build sun tracker may help me.

Given
* the logitude and latitude of your position
*date
* time
How to calculate the azimuth and elevation of the Sun position ?

NOTE : that it is possible to track the sun without knowing explicitly its
azimuth an elevation angles. I'm not interested in this. I'm looking for the
equations which will return the Sun's azimuth and elevation angles
corresponding to given date, time and location.

 

[Caliban]

SunFlower wrote:

Sorry, this is not directly related with the electronics. But I thought
people on this group who build sun tracker may help me.

Given
* the logitude and latitude of your position
*date
* time
How to calculate the azimuth and elevation of the Sun position ?

NOTE : that it is possible to track the sun without knowing explicitly its
azimuth an elevation angles. I'm not interested in this. I'm looking for the
equations which will return the Sun's azimuth and elevation angles
corresponding to given date, time and location.

If you can't find it on the web it's probably in here:

http://www.amazon.com/exec/obidos/tg/detail/-/0521356997/104-2563445-5716751?v=glance

 

[Caliban]

Caliban wrote:

If you can't find it on the web it's probably in here:

http://www.amazon.com/exec/obidos/tg/detail/-/0521356997/104-2563445-5716751?v=glance

It is, page 86 according to "Look Inside this book", I don't have a copy
(yet - it's still on my wishlist) so can't tell you the equation.

 

Amazing !.. What a pin-pointted reference!... Thank you VERY much.. I'll try
to find this book especially for its page 86!..

Cheers..

....

If you can't find it on the web it's probably in here:

http://www.amazon.com/exec/obidos/tg/detail/-/0521356997/104-2563445-5716751?v=glance

It is, page 86 according to "Look Inside this book", I don't have a copy
(yet - it's still on my wishlist) so can't tell you the equation.

 

http://www.faqs.org/faqs/astronomy/faq/part3/section-5.html

It is, page 86 according to "Look Inside this book", I don't have a copy
(yet - it's still on my wishlist) so can't tell you the equation.

 

[AssTelescope]

its on google, do a search, no need to buy a book

here is one shitty link off the first result
http://www.xylem.f2s.com/kepler/sun.html


"SunFlower" <sun flower> wrote in message
news:41dfde95$0$3872$afc38c87@news.optusnet.com.au...

Sorry, this is not directly related with the electronics. But I thought
people on this group who build sun tracker may help me.

Given
* the logitude and latitude of your position
*date
* time
How to calculate the azimuth and elevation of the Sun position ?

NOTE : that it is possible to track the sun without knowing explicitly its
azimuth an elevation angles. I'm not interested in this. I'm looking for
the equations which will return the Sun's azimuth and elevation angles
corresponding to given date, time and location.

 

See also

The Orrery newsletter, Issue #41.
http://members.allstream.net/~gneill/orrery.html

 

[swanny]

SunFlower wrote:

Sorry, this is not directly related with the electronics. But I thought
people on this group who build sun tracker may help me.

Given
* the logitude and latitude of your position
*date
* time
How to calculate the azimuth and elevation of the Sun position ?

NOTE : that it is possible to track the sun without knowing explicitly its
azimuth an elevation angles. I'm not interested in this. I'm looking for the
equations which will return the Sun's azimuth and elevation angles
corresponding to given date, time and location.


I found this site very useful for solar tracking:

http://www.squ1.com/index.php?http://www.squ1.com/solar/solar-position.html

Geoff

 

That's very interesting link.
Thank you..

I found this site very useful for solar tracking:

http://www.squ1.com/index.php?http://www.squ1.com/solar/solar-position.html

Geoff

 

Some of the links about Sun's position gathered so far as follows ;
http://www.nrel.gov/docs/fy04osti/34302.pdf
http://rredc.nrel.gov/solar/codesandalgorithms/spa/
http://members.allstream.net/~gneill/orrery.html (Issue #41)
http://www.xylem.f2s.com/kepler/sun.html#twig02
http://www.amazon.com/exec/obidos/tg/detail/-/0521356997/103-6282662-6000647?v=glance
http://www.faqs.org/faqs/astronomy/faq/part3/section-5.html
http://solardat.uoregon.edu/SunChartProgram.html
http://www.squ1.com/index.php?http://www.squ1.com/solar/solar-position.html