If you need tabulated values, you may evaluate "Sun Ephemeris" http://www.sundials.eu/download/SunEphemeris_enu.html
It provides results at whichever desired time step. Data can be easily exported to other software. Accuracy is the same as "Sol Et Umbra" (see the document http://www.sundials.eu/download/Comparison%20of%20sun%20ephemeris.pdf). Gian Casalegno <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> Mail priva di virus. www.avast.com <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> 2017-10-15 19:29 GMT+02:00 Steve Lelievre <steve.lelievre.can...@gmail.com>: > > Thanks to everyone who responded, on and off-list, to my inquiry about > Great Circle Studio's web site. I used that web site because it had a > facility for getting solar position data in a tabulated layout, at a chosen > interval over a chosen date range (such as daily values over a year). It > was easy to move the table of data to other software for further processing. > > Unfortunately, the clone of the Great Circle Studio webpage, as found by > Googling, is not functional. It seems that someone ripped the original > webpage but did not realize (and did not test) that the page is just a web > form that has to be submitted to a server in order to generate the result > data. > > The alternative tools that respondents suggested are all very good, but > the one that seems best suited to my specific purpose is the SPA [Solar > Position Algorithm] Calculator hosted by the US National Renewable Energy > Laboratory at http://midcdmz.nrel.gov/solpos/spa.html. It is very > powerful, but has a small deficiency - the maximum interval allowed is 60 > minutes, so if you want daily (noon) figures you must generate a year of > hourly data and then discard most rows from the table of results. > > Thanks again, all. > > Steve > --------------------------------------------------- > https://lists.uni-koeln.de/mailman/listinfo/sundial > >
--------------------------------------------------- https://lists.uni-koeln.de/mailman/listinfo/sundial
