  We present the hybrid opacity code SCO-RCG which combines statistical
approaches with fine-structure calculations. Radial integrals needed for the
computation of detailed transition arrays are calculated by the code SCO
(Super-configuration Code for Opacity), which calculates atomic structure at
finite temperature and density, taking into account plasma effects on the
wave-functions. Levels and spectral lines are then computed by an adapted RCG
routine of R. D. Cowan. SCO-RCG now includes the Partially Resolved Transition
Array model, which allows one to replace a complex transition array by a
small-scale detailed calculation preserving energy and variance of the genuine
transition array and yielding improved high-order moments. An approximate
method for studying the impact of strong magnetic field on opacity and
emissivity was also recently implemented.
