Hi Fernando, For specific data inputs of date, time and location, the following website calculates the solar ephemeris and gives you the altitude and azimuth for your location. http://arthemis.na.astro.it:6563/themis/owa/solar.coordinates
The Dialists Companion which you can download from the NASS website http://www.sundials.org does the same thing. I use it on a routine basis for such calculations. It is more convenient because you can install it on your computer. Both of these give specific numbers back for each data set that you enter. Neither of these will produce a table of all the data. Inputting 13 x 365 = 4745 data sets is tedious. What you need is a spreadsheet or program that takes inputs of your location, calculates the solar ephemeris (declination and hour angle) to the required accuracy, calculates the altitude and azimuth, and then prints the huge output table. It is not a difficult programming task. The mathematical algorithms are well known, but I do not know of anyone who has offered the table of outputs that I think you are looking for. Roger Bailey Walking Shadow Designs 51 N 115 W -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Fernando Cabral Sent: June 6, 2001 10:42 AM To: [email protected] Subject: Apparent solar altitude calculation Hello I'd like to be able to calculate the apparent solar altitude, day by day from January first to December 31 on a hourly base from 7 AM to 6 PM. Do you know if any of the calculators available on the Internet can provide this? Thank you - fernando -- Fernando Cabral Padrao iX Sistemas Abertos mailto:[EMAIL PROTECTED] http://www.pix.com.br Fone Direto: +55 61 329-0206 mailto:[EMAIL PROTECTED] PABX: +55 61 329-0202 Fax: +55 61 326-3082 15º 45' 04.9" S (23 L 0196446/8256520) 47º 49' 58.6" W 19º 37' 57.0" S (23 K 0469898/7829161) 45º 17' 13.6" W
