NGC1904 (M79) c?
 9 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)=    20.254 +-  0.136
 a(1)=     4.883 +-  0.231
 a(2)=     0.805 +-  0.135
Power-of-x coeffients a(0)+a(1)x+a(2)x^2+..., where x=1+(r/r_c)^2, r_c=1.00
 a(0)=     6.0486
 a(1)=     0.8887
 a(2)=     0.4605
log r(arcsec)   mu_V    mu_V(fitted)  residual   weight  data set