25 Jan
2017
25 Jan
'17
2 p.m.
Thanks ALL! Found it (SuM.exe). But it won't let me easily slide around in time.
So I just went back to my 20 year old copy of Instantrack, verified that it gives same result as SuM and now I'm good.
I used IT to see how many hours of sun a south facing solar array would be illuminated at what elevation angle.
For my latitude (39 degrees), I developed this table in about a minutes work: 7 Hrs over +/-49 deg AZ above 10 deg EL 6 hrs over +/- 43 deg AZ above 14 deg EL 5 Hrs over +/- 37 deg AZ above 18 deg EL 4 Hrs over +/- 31 deg AZ above 21 deg EL 3 Hrs over +/- 24 deg AZ above 24 deg EL
To figure out where to top off some trees.
Bob, WB4APR