临边昏暗[Limb Darkening] - 达人(其实～我是卧底，来自外星)

2004/11/10 | 临边昏暗[Limb Darkening]
类别(¤〖天文〗) | 评论(0) | 阅读(31) | 发表于 12:32: If the normal optical thickness and ground albedo are small, light scattering by both the ground and atmosphere can be ignored. Ignoring polarization and assuming a Rayleigh phase function

where is the phase angle,then gives

where F is the solar flux, K is the ratio of the surface brightness to that of a Lambert surface normal to the sun's rays, and AM is the airmass (Pollack 1967).; 0