  ERIS is a diffraction limited thermal infrared imager and spectrograph for
the Very Large Telescope UT4. One of the science cases for ERIS is the
detection and characterization of circumstellar structures and exoplanets
around bright stars that are typically much fainter than the stellar
diffraction halo. Enhanced sensitivity is provided through the combination of
(i) suppression of the diffraction halo of the target star using coronagraphs,
and (ii) removal of any residual diffraction structure through focal plane
wavefront sensing and subsequent active correction. In this paper we present
the two coronagraphs used for diffraction suppression and enabling high
contrast imaging in ERIS.
