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A magnum opus on the Chajnantor plateau

CONCERTO, installed in April 2021 on the Atacama Pathfinder EXperiment (APEX) 12-meters telescope and covering the frequency range 100-300 GHz, inaugurates a class of instruments. The new born on the Chajnantor plateau combines the largest instantaneous field-of-view, diffraction-limited angular resolution and moderate spectral capabilities. In order to achieve this “triple jump”, without sacrificing the optimal sensitivity, a 4.300 pixels cryogenic camera has been coupled to a sophisticated optics system including a Martin-Puplett interferometer (MPI). A fast-moving (2.5 Hz) mirror allows to separate the spectral components of the incoming radiation in the Fourier domain for each individual pixel of the camera

Alessandro Monfardini, Guilaine Lagache

Nature Astronomy 5, 970 (2021)  (“Invited” publication)

DOI : 10.1038/s41550-021-01482-1

Journal here