During the METIS study we carried out detailed modelling of the instrument, to predict what performance it will be capable of delivering at the telescope. This modelling exercise is vitally important for ensuring that the chosen design can indeed deliver the desired data. The figure below shows how METIS will compare with other current and future facilities that cover the same wavelengths. The sensitivities are calculated for point sources detected at 10-sigma in 1 hour, assuming a 20% overhead. Line sensitivities assume an unresolved spectral line. Note that the spectroscopic sensitivities for the various instruments cover a range of resolving powers.

comparative sensitivities

Image: S. Kendrew