> > So: at a 90deg angle, the percentage is 50%; at 180deg, 0%; at 270 > degrees 50%; at at 0/360 deg, 100%. > > If that is correct, then I see a mathematical pattern: it behaves like > the trig function cosine. Except that it goes from 0 to 1 in 90deg, ... If the satellite is spherical, the illuminated fraction of the total visible disk is (1 + cos v)/2 As others have noted, this is NOT the relative brightness, since this also depends on texture, polarization ... ----------------------------------------------------------------- Unsubscribe from SeeSat-L by sending a message with 'unsubscribe' in the SUBJECT to SeeSat-L-request@lists.satellite.eu.org http://www2.satellite.eu.org/seesat/seesatindex.html
This archive was generated by hypermail 2b29 : Mon Apr 23 2001 - 14:25:02 PDT