<http://purl.org/dc/terms/description>
"The Atacama Cosmology Telescope is a six meter, off-axis Gregorian telescope for measuring the cosmic microwave background at arcminute resolutions. The Millimeter \nBolometer Array Camera (MBAC) is its current science instrument. Erected in the Atacama Desert of Chile in early 2007, it saw first light with the MBAC on 22 \nOctober 2007. In this paper we review its performance after one month of observing, focusing in particular on issues surrounding the alignment of the optical \nsystem that impact the sensitivity of the experiment. We discuss the telescope motion, pointing, and susceptibility to thermal distortions. We describe the \nmirror alignment procedure, which has yielded surface deviations of 31 \u03BCm rms on the primary and 10 \u03BCm rms on the secondary. Observations of planets show \nthat the optical performance is consistent with the telescope design parameters. Preliminary analysis measures a solid angle of about 215 nanosteradians \nwith a full width at half maximum of 1.44 arcminutes at 145 GHz.\n\nCopyright 2008 Society of Photo-Optical Instrumentation Engineers. \nOne print or electronic copy may be made for personal use only. Systematic reproduction and distribution, \nduplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited"@en
<https://open.library.ubc.ca/cIRcle/collections/facultyresearchandpublications/52383/items/1.0107587>