  The differential refraction of light passing through the atmosphere can have
a severe impact on image quality if no atmospheric dispersion corrector (ADC)
is used. For the Extremely Large Telescope (ELT) this holds true well into the
infrared. MICADO, the near-infrared imaging camera for the ELT, will employ a
cryogenic ADC consisting of two counter-rotating Amici prisms with diameters of
125 mm. The mechanism will reduce the atmospheric dispersion to below 2.5 milli
arcseconds (mas), with a set goal of 1 mas. In this report, we provide an
overview of the current status of the ADC in development for MICADO. We
summarise the optomechanical design and discuss how the cryogenic environment
impacts the performance. We will also discuss our plan to use a diffraction
mask in the cold pupil to calibrate and validate the performance once the
instrument is fully integrated.
