  We introduce GALFIT-CORSAIR: a publicly available, fully retro-compatible
modification of the 2D fitting software GALFIT (v.3) which adds an
implementation of the core-Sersic model.
  We demonstrate the software by fitting the images of NGC 5557 and NGC 5813,
which have been previously identified as core-Sersic galaxies by their 1D
radial light profiles. These two examples are representative of different dust
obscuration conditions, and of bulge/disk decomposition. To perform the
analysis, we obtained deep Hubble Legacy Archive (HLA) mosaics in the F555W
filter (~V-band). We successfully reproduce the results of the previous 1D
analysis, modulo the intrinsic differences between the 1D and the 2D fitting
procedures.
  The code and the analysis procedure described here have been developed for
the first coherent 2D analysis of a sample of core-Sersic galaxies, which will
be presented in a forth-coming paper. As the 2D analysis provides better
constraining on multi-component fitting, and is fully seeing-corrected, it will
yield complementary constraints on the missing mass in depleted galaxy cores.
