Re: stop the earth: TI 59 PPX; No No Nooooooo!

[Bill Gottesman]

Roger, Roger, Roger,

Say it isn't so.  I had you figured as an HP 65 or HP 67 kind of guy.

-Bill

On 12/11/2010 1:53 PM, Roger Bailey wrote:

Hi Brent,

I found my old TI 59 PPX program to calculate the look up angle. To 
have a look at the math and the program steps go to this personal 
website folder. http://www3.telus.net/public/rtbailey/SML/ . There are 
two pdf files in this folder, 47 kb and 153 kb, too big to attach to 
this letter.


LookUpAmgle1 is three pages with diagrams and the mathematical steps. 
The diagrams help explain the mathematical steps.


LookUpAnglePPX is seven pages and includes the program steps and a 
couple examples. If anyone is really interested and still has a 
functioning TI 59, I will mail the little magnetic strip with the 
program on request.


Although this programmable calculator program was written 30 years 
ago, the math outlined is still valid. This could be rewritten to 
solve for your longitude and reprogrammed for modern use. I expect 
there are many examples available on the web.


Regards,
Roger Bailey
Walking Shadow Designs

--
From: Brent bren...@verizon.net
Sent: Friday, December 10, 2010 6:22 PM
To: Sundial List sund...@rrz.uni-koeln.de
Subject: re: stop the earth


I was playing with satellite look angle calculator today.

http://www.intelsat.com/resources/satellitedata-pas/calc-look-angle.asp

You chose the satellite you want to work with and then plug in your 
latitude and longitude and it will calculate the azimuth and 
elevation for you.


I think the math behind this program would work for my navigation if 
we could run it backwards.
Input the satellite I was looking at, input the azimuth and the 
elevation at the location and then the calculator would return with 
latitude and longitude.


Do you think this would work?

Does anyone know the math behind these calculators?

Thanks again;
brent

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antikythera mechanism

[PATRICK O'HEARN]

For those who are familiar with the Antikythera mechanism, here is a link to a 
you tube clip of a working modelmade out of legos...truly an amazing 
construction.  Now, for a lego 
sundial?http://blog.makezine.com/archive/2010/12/lego_antikythera_mechanism.html
EnjoyPat O'HearnWashington, USA   ---
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Merry Christmas in all the languages

[Steve]

Confrere:

  Like most, sometimes I just sit and other times I sit and 
think.  Perhaps with the holidays approaching and the turmoil in the 
world, I was thinking that the whole world should have a list like 
ours.  You look at the names, people from all over the world and both 
genders.  You read the emails, different ideas, different methods and 
all well received with respect and admiration.  Everyone freely 
giving and responding to any quest for knowledge or help.  Sometime 
just sharing an experience.  All, as interesting to read as anything 
in a library.  I could not in my worst nightmare think badly of 
anyone on the list, and so that is my Christmas gift to myself.


Merry Christmas to all.

Steve

Yorktown, VA

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