Linear limb darkening coeeficients are taken from tables published by
Van Hamme (1993, AJ 106, 2096).
Function. Return linear limb darkening coefficient integrated over specified bandpass. Example: print, limbfilter(5500, 0.5, 'R').limbband(teff_real,log(g)_real,center_real, width_real)
Function. Return linear limb darkening coefficient integrated over band pass with specified center and full width (in nm). Example: print, limbband(5000, 0.5, 700, 25).limbfactor(coeff_real)
Function. Return factor to multiply the uniform disk diameter with in order to get a limb darkened diameter using the specified linear limb darkening coefficient. Based on the squared visibility matching at 0.3 and a formula derived by Hanbury Brown (1974, MNRAS 167, 475).