I have made a DSM, and use the Hillshade too to show the shade from buildings and trees. We did this for 9 am, noon, and 3 pm during the winter and summer solstice. Our ultimate goal is to show shade cover on Auburn University's campus to see where more trees need to be planted. I guess my question is how is the best way to go about doing this. We did a model in ERDAs to show the median shadows. Any help or suggestions would be great.