Date: Tue, 09 Mar 1999 14:58:16 -0800 (PST) From: Tim Mickleburgh <[EMAIL PROTECTED]> Does anyone know the brightness of direct sunlight at an altitude of 90km, or direct me to a suitible resource? Any thoughts on contrast at that altitude would be helpful also - I am assuming that the only "fill" for shadows is going to be reflectance from the surface of the Earth. Thanks, Tim Mickleburgh, Primex Aerospace
