README
1Rayleigh scattering is implented using lookup tables. Tables are
2calculated for fixed phase angles (the observer - point - sun angle).
3For lines of sight intersecting the disk, the tables are a 2D array of
4scattering intensities tabulated as a function of incidence (the
5zenith angle of the sun seen from the point of interest) and emission
6(the zenith angle of the observer seen from the point of interest)
7angles.
8
9The lookup tables can be calculated using the sample scattering file
10in the xplanet distribution:
11
12xplanet -create_scattering_tables earthRayleigh -verbosity 1
13
14The comments in the scattering file describe its format. Once the
15tables have been created, place them in the xplanet/scattering
16directory.
17