I'm designing a small veterans memorial chapel so that the rising (or setting, haven't decided) sun will highlight a list of casualties killed on that date.
I have the sun altitude and azimuth for every day of the year at our lat/long from the Naval Observatory.
My question is: what are some ways to direct the sunlight through the east or west wall. I've thought of a very thick wall with fixed vertical slits. That would illuminate a long list. The angle of the different slits would 'move' the light across the wall each day.
Some type of projection lens would work but 365 would get expensive. Perhaps a motorized slat arrangement. We want to keep it passive if possible. Our projection distance may be too short for daily and we have go to weekly lists. Or simply timed spot lights.
Suggestions?