MIT Henge 3rd floor viewing angles The angular size of the sun and moon are about .5 degree. The railing is 45" high. And about 12.5 feet in front of the doorway. The 3rd floor doorway is 54" wide and 106.5" high. From 6" high and 100' back from the doorway. (1200) Top of railing is 39 / 1350 = 1.65 degrees Top of door is 100.5 / 1200 = 4.79 degrees Width of door is 54 / 1200 = 2.58 degrees From 6" high and 200' back from the doorway. (2400) Top of railing is 39 / 2550 = .88 degrees Top of door is 100.5 / 2400 = 2.40 degrees Width of door is 54 / 2400 = 1.29 degrees From 6" high and 400' back from the doorway. (4800) Top of railing is 39 / 4950 = .45 degrees Top of door is 100.5 / 4800 = 1.20degrees Width of door is 54 / 4800 = .64 degrees From 6" high and 600' back from the doorway. (7200) Top of railing is 39 / 7350 = .30 degrees Top of door is 100.5 / 7200 = .80 degrees Width of door is 54 / 7200 = .43 degrees From 6" high and 800' back from the doorway. (9600) Top of railing is 39 / 9750 = .23 degrees Top of door is 100.5 / 9600 = .60 degrees Width of door is 54 / 9600 = .32 degrees