Dear List Members, I am writing to share a sun position spreadsheet I wrote that has been invaluable to me in helping design a solar oriented stone circle. In addition to the standard information you would expect from a sun position spreadsheet, it performs some convenient calculations that I could not find elsewhere. For example, you can specify the altitude or azimuth, and it will tell you the time(s) when the sun reaches those specifications. You can enter altitude as corrected for refraction, or not, and it readily converts between the two. It also displays both refracted and unrefracted altitude values on the main position page. It recognizes entry of degrees in either decimal form or dd:mm:ss form, and automatically converts the entry to display both formats.
I mentioned it briefly at the NASS conference last month, and have added some suggestions made by Larry McDavid. If you would like to try it, it is freely available at www.precisionsundials.com/software.htm . Scroll down to sun position calculator, and either save it, or double click and open it in Internet Explorer. Please note that you must enable macros, if Excel asks at startup. The instruction page (see yellow tabs at the bottom) gives enough info to get you started. I welcome any feedback. -Bill G --------------------------------------------------- https://lists.uni-koeln.de/mailman/listinfo/sundial
