Instrumentation for the CCAT Telescope

摘要

We present a first cut instrument design package for the proposed 25 meter Cornell-Caltech Atacama Telescope (CCAT). The primary science for CCAT can be achieved through wide field photometric imaging in the short submillimeler through millimeter (200 urn to 2 mm) telluric windows. We present strawman designs for two cameras: a 32,000 pixel short submillimeter (200 to 650 um) camera using transition edge sensed bare bolometer arrays that Nyquist samples (@ 350 urn) a 5'x5' field of view (FoV), and a 45,000 pixel long wavelength camera (850 urn to 2 mm) that uses slot dipole antennae coupled bolometer arrays with wavelength dependent sampling that covers up to a 20' square FoV. These are our first light instruments. We also anticipate "borrowed" instruments such as direct detection and heterodyne detection spectrometers will be available at, or nearly at first light.