NGC5634
17 iterations.
Chebyshev coeffients a(0)T_0(u)+a(1)T_1(u)+..., where u is log (r/arcsec) mapped to [-1,1]
 a(0)=    21.906 +-  0.129
 a(1)=     5.446 +-  0.213
 a(2)=     0.719 +-  0.146
Power-of-x coeffients a(0)+a(1)x+a(2)x^2+..., where x=1+(r/r_c)^2, r_c=0.82
 a(0)=     6.2244
 a(1)=     1.2042
 a(2)=     0.3167
log r(arcsec)   mu_V    mu_V(fitted)  residual   weight  data set