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How to calculate the azimuth and elevation of the Sun position as a function of date/time and locati

G

Guest

Jan 1, 1970
0
Given
* the logitude and latitude of your position
*date
* time
how to calculate the azimuth and elevation of the Sun position ?
 
G

Guest

Jan 1, 1970
0
Thank you for the links, which I'll look in a minute.
What I'm trying to do is to calculate/figure out the shape of the shadow of
a building as a function of date, time and location (and shape) of the
building.
 
G

Gymy Bob

Jan 1, 1970
0
Do you measure altitude in degrees? Many aeronautical people would disagree
with you.

Duane C. Johnson said:
lkj said:
Given
* the logitude and latitude of your position
*date
* time
how to calculate the azimuth and elevation
of the Sun position ?

Elevation ia actually called Altitude.

I have links to some web pages that can do this at:
http://www.redrok.com/analemma.htm
Especially the astronomy codes by Keith Burnett. See:
http://www.redrok.com/analemma.htm#burnett

In addition yo AZimuth and ALTitude, Burnett's programs
also give the solar Right Ascension and DEClination.

What are you planning on building?

Duane

--
Home of the $35 Solar Tracker Receiver
http://www.redrok.com/electron.htm#led3X [*]
Powered by \ \ \ //|
Thermonuclear Solar Energy from the Sun / |
Energy (the SUN) \ \ \ / / |
Red Rock Energy \ \ / / |
Duane C. Johnson Designer \ \ / \ / |
1825 Florence St Heliostat,Control,& Mounts |
White Bear Lake, Minnesota === \ / \ |
USA 55110-3364 === \ |
(651)426-4766 use Courier New Font \ |
[email protected] (my email: address) \ |
http://www.redrok.com (Web site) ===
 
M

m II

Jan 1, 1970
0
Gymy said:
Do you measure altitude in degrees? Many aeronautical people would disagree
with you.


http://faultgame.com/images/mrknow4.wav


=============================================
That's where Altitude comes in. Altitude ranges from 0 to 90 degrees, and
measures the angle between the horizon, you, and the object. An object with
0 degrees altitude is right on the horizon, while an object at 90 degrees
altitude is directly overhead.
http://curious.astro.cornell.edu/question.php?number=113
=============================================

http://www.sunlitdesign.com/infosearch/altitude.htm

mike




=========================================================
My 'GymBobism' collection...updated daily:
=========================================
**some '*' bracketed text added for clarification**




You sure spent a lot of time trying to convince me you don't knwo what I am
talking about...LOL

At 11.6 volts a 12v battery is about 50-70% charged still.

Polish solar panels are what americans called "flashlights"

Propane will disapate and freeze when it evaporates.

Gasoline is not nearly as volatile as hydrogen.

Many people have browsers that economize the download

Try to stay on topic and on thread too bean brain.

Perhaps try Outlook Express or another browser that knows how to thread
posts.

Let's say youre solar cell was trying to put out
14.3 volts DC and you stuck a 10 ohm meter in series with a charged 13.8
volt DC battery.

This is power grid induction through capacitive proximity

A thought I have is rain water from a roof on a three story home through a
micro-turbine.

Breakers are good for one time usage of one fault and then they need to be
replaced for any warrantied usage.

If the breaker interupts a fault, it should be replaced.No warranty will
honoured after that.

I don't have a link at this time

There are no hydrogen molecules in water and the oxygen in water isn't
flammable either.

Water is inert and contains no energy to be used. Get some basic chemistry
first.

Quite simply put, for some of the boneheads here.

NiCads and NiMh batterries are designed to take a current charge forever.

Did they have electricity back in 1994?

I have been around so long with this stuff I believe I invented the diode in
1941 but I am not familiar with the solar panel usage requirements of them.
(no P & N substrate explanations please. I wrote the GE manual...LOL)

NOTE: do not pass ground wires through metal holes or cable clamps with two
screws on a metal surface.

There is **NOT*** enough energy in a lightning bolt to power your house for
more than an hour...if that. Do the math.
The figures escape me but let's say it puts out a roughly MWatt of power for
100 nanoseconds?
100 x 10-9 x 1 x 106 / 3600 (sec/hr) = 0.0027 wH
oooops.... Wouldn't light your home for a 1/2 second.
OK..OK.. multiply the figures time 100 or 1000. Now it would light a 100W
bulb for 1 second.

The IEEE-232 standards were never followed or known by many.

Fossil fuels are still renewable and being cxreated as we speak.

Children are venerially created.

If you want to discuss this then fine, otherwise go **** yourself like your
mother did.

Can you let go of my dick before it explodes on ya, goofball?

Petroleum is not related to Natural gas.

I would rather work at my $100/hour job than at chopping wood for hours to
save $3/hour

I have no license, I wire and inspect other's wiring for a job and work for
a medium size electrical utility.

The majority prefers top posting.

Get your tear ducts flushed by a knowledgeable optometrist.

Not many materials have the huge exponential resistance/heat curve aluminum
does. Overload doesn't make it glow like copper...it flashes and explodes.

A bathroom fan motor would never push hot air down ten feet or cold up ten
feet.

Bathroom fans have a hard time pushing 55 cfm through a 3-4" pipe 20
horizontal feet. They are made to vent smells and humid air horizontally
only.

Why not spend the money on a contract with the grid company and get an
exclusive line to your house and never have brownouts.

Usenet rules dictate top posting for readability

Many cell modems are set up to filter bottom posts out.

Cell modems do not cut off anything.

What security flaws. **referring to Outlook Express**

Bottom posting was the was in the 70s and 80s before threading browsers were
available cheap like OE

What is a PMW?

10 pounds per gallon Imperial. That gallon is totally unique to the
US....ooops..I think all gallons are unique to the US now.

The standard Imperial gallon the whole world used weighs 10 pounds exactly.

The copper isn't worth more than 5 cents per pound. It is classed a mixed
copper and nobody wants it.

Hey moron! The copper is considered "mixed" copper and is worth about $0.02
per pound, if he seperates it all.

Just don't ever lose weight. Toxins are stored in your fat cells.

Did you know, **NO***, I repeat ***NO*** death has ever been related to
PCBs?

Insulated square copper wires from a dry transformer are not 99% copper and
take a lot of work to remove the insulation.

I have tonnes of insulated copper wire if you want it. I think you could
almost have for the picking it up. How many bins can you take per year

50 lbs? We have it by the bin full. Mostly #6 to 650 MCM. I beleive you
would have to leave a bin and then pick it up full later to compete with the
current scrapper.

Can't this tranformer be used by somebody to generate a second 120V from a
single phase 120V inverter? It sounds pretty beefy.

BTW: once you knock the wedge out of the coil form the laminations will be
easier to get out. This keeps them from buzzing until the varnish and other
impregnations go into it.

All you guys have a bad Christmas or Jewish and didn't see Santa or something?

Run each signal twisted with a ground for noise. RD twisted with gnd as a
pair, TD twisted around ground as a pair etc... This means signal/logic
ground not power ground or case ground, if they are different. Do not
connect the other ends of the ground conductors.

Tar pitch in a flourescent ballast does ***NOT*** contain PCBs and probably
never did.

Religion is not genetic or even herodigious

I believe the warmest part of the lake is just below the ice. As the water
frezes it rises to the top and joins the other ice formations.

Gel cell won't cut it when it comes to putting out 100A or more. They cook
in one spot and the rest of the electrolyte doesn't circulate fast enough.

There is nothing standard about USanian measurements. They changed their
sizes to avoid trading with the rest of the world. This worked for a few
centuries but the rest of the world moved on to the metric system to avert
the confusion the US caused.

Ever put your ohmmeter (do I need to explain an ohmmeter also?) across a
capacitor? It measures infinity after charging to the supply voltage because
the electrolyte is an insulator.

Electrolytes are not conductors of electricity in a capacitor.

If the electrolyte conducted it would be a resistor.

Sometimes it is an ego boost to have these so-called "professionals" come
and beg for information because they can't our toys do what the good guys
can but I would never hire them given a choice.

Do you measure altitude in degrees? Many aeronautical people would disagree
with you.
 
W

William P.N. Smith

Jan 1, 1970
0
Gymy Bob said:
Do you measure altitude in degrees? Many aeronautical people would disagree
with you.

Congrats, Gym-head. You're the only person so far to get a global
(across all newsgroups):

<Plonk>

Bye now. Where do they find these people?
 
G

Gymy Bob

Jan 1, 1970
0
45-65 degrees? Not altitude but elevation.

Duane C. Johnson said:
Hi Gymy;

Gymy said:
Do you measure altitude in degrees?

Yes they do!
lkj was specifically asking about the Sun's position.
This is based on astronomical calculations. In this
context the Sun's position is expressed in angular
units of Azimuth, AZ, and Altitude, ALT.
Many aeronautical people would disagree with you.

OK, what would you say the height of the Sun is? Hmmm?

Duane

--
Home of the $35 Solar Tracker Receiver
http://www.redrok.com/electron.htm#led3X [*]
Powered by \ \ \ //|
Thermonuclear Solar Energy from the Sun / |
Energy (the SUN) \ \ \ / / |
Red Rock Energy \ \ / / |
Duane C. Johnson Designer \ \ / \ / |
1825 Florence St Heliostat,Control,& Mounts |
White Bear Lake, Minnesota === \ / \ |
USA 55110-3364 === \ |
(651)426-4766 use Courier New Font \ |
[email protected] (my email: address) \ |
http://www.redrok.com (Web site) ===
 
G

Gymy Bob

Jan 1, 1970
0
Thanx for the third time again!

We need less morons like another clone of Moron II here.
 
G

George Ghio

Jan 1, 1970
0
<lkj> said:
Thank you for the links, which I'll look in a minute.
What I'm trying to do is to calculate/figure out the shape of the shadow of
a building as a function of date, time and location (and shape) of the
building.

For that you need a sun chart. Unless you can work out the angles your
best bet would be the Solar Pathfinder.

Search Solar Pathfinder.
 
D

daestrom

Jan 1, 1970
0
Gymy Bob said:
Do you measure altitude in degrees? Many aeronautical people would
disagree
with you.

A simple search in a dictionary is what's needed to clear this up.

http://www.m-w.com/cgi-bin/dictionary?book=Dictionary&va=altitude shows
there are two uses of the term 'altitude'. One is the 'angular elevation of
a celestial object above the horizon.' This is an angle and so is measured
in degrees or radians. Another definition is 'the vertical elevation of an
object above a surface of a planet.' This form is measured in units of
length such as feet or meters and is what is used by 'many aeronautical
people' to describe the distance a plane is flying above the ground.

Altitude (in degrees) and azimuth are one way of locating a celestial body,
right-ascension and declination being the other common coordinate system.
Since the OP was asking about the sun (a celestial body), the proper
measurement of its altitude is certainly in degrees.

daestrom
 
R

Ralph Bouwmeester

Jan 1, 1970
0
If you're still looking for help, I can provide you with tables for your
specific location. Contact me directly at [email protected] (delete
"hide" from the e-mail address).

Ralph
 
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