CRIRES${}^{+}$ on sky at the ESO Very Large Telescope

R. J. Dorn, P. Bristow, J. V. Smoker +49

The CRyogenic InfraRed Echelle Spectrograph (CRIRES) Upgrade project CRIRES${}^{+}$ extended the capabilities of CRIRES. It transformed this VLT instrument into a cross-dispersed spe…