NGC5272 (M3) 11 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)= 21.940 +- 0.137 a(1)= 6.646 +- 0.242 a(2)= 0.883 +- 0.214 a(3)= -0.218 +- 0.198 Power-of-x coeffients a(0)+a(1)x+a(2)x^2+..., where x=1+(r/r_c)^2, r_c=1.50 a(0)= 5.4106 a(1)= 0.5151 a(2)= 1.0794 a(3)= -0.1054 log r(arcsec) mu_V mu_V(fitted) residual weight data set