Solar Limb Darkening

Solar Limb Darkening: a Comparison of Observational Data and the Eddington Model
cos θ	r/R = sin θ	Relativity Intensity: I(θ) / I(0°)		**I_model/I_obs**
cos θ	r/R = sin θ	Observed Relative Intensity	Eddington Model: Predicted Relative Intensity, I(θ) = H(2+3 cos θ)	**I_model/I_obs**
1.00 (center)	0.00	1.000	1.000	1.000
0.90	0.44	0.944	0.940	0.996
0.80	0.60	0.898	0.880	0.980
0.70	0.71	0.842	0.820	0.974
0.60	0.80	0.788	0.760	0.964
0.50	0.87	0.750	0.700	0.933
0.40	0.92	0.670	0.640	0.955
0.30	0.95	0.602	0.580	0.963
0.20	0.980	0.522	0.520	0.996
0.10	0.995	0.450	0.460	1.022
0.00 (limb)	1.00	(not well-defined)	0.400	-