Kavli Affiliate: Jeffrey McMahon | Summary:We present measurements of the spectral response of the four Advanced ACTPol (AdvACT) multichroic detector arrays, which observed in frequency bands centered near 30, 40, 90, 150, and 220 GHz. The passbands were measured with a Fourier transform spectrometer (FTS) combined with coupling optics that direct and match the output […]
Continue.. The Atacama Cosmology Telescope: Passband Measurements with an Analysis of Systematic Errors