Thanks to Ross McCluney for bringing SUNPATH to our attention. I would like to mention another program, MICA (Multiyear Interactive Computer Almanac), which is an Interactive Astronomical Almanac developed by the US Naval Observatory. This program computes positions, the rising and setting times etc for celestial bodies including the sun with the same precision as the Astonomical Almanac. I am using it in the field to replace a solar altitude and azimuth prgram that I wrote. MICA has both a DOS based version (PB93-500163LGG) which runs fine in a DOS window under WIN95 and a MAC version (PB93-500155). The software is available from the NTIS, US Department of Commerce, Technology Administration, National Technical Information Service, Springfield, VA 22161. The cost was $55 plus $6 for domestic shipping. One may call NTIS at 703 487-4650.
Of course, the Dialist's Companion written by Frederic Sawyer and Robert Terwilliger for $15 is a very useful program which displays alt. & azi. as well as a lot of other useful information. I have compared the Azimuth and Altitude of the sun computed by MICA, the Dialist's Companion and my own program and find very good agreement. Michael E. Mickelson Professor of Physics Department of Physics and Astronomy Denison University Granville OH 43023 [EMAIL PROTECTED] Office: 614-587-6467 FAX: 614-587-6240
