Mexico-UK Submillimeter Camera for AsTronomy focal plane performance at the Large Millimeter Telescope

Tapia, Marcial Becerril, Ade, Peter A. R. ORCID: https://orcid.org/0000-0002-5127-0401, Aguilar Pérez, Emmaly, Barry, Peter S., Brien, Thomas L. R., Castillo-Domínguez, Edgar, Dodd, Christopher, Dunscombe, Christopher, Eales, Stephen ORCID: https://orcid.org/0000-0002-7394-426X, Ferrusca, Daniel, Gómez-Rivera, Víctor, Hargrave, Peter ORCID: https://orcid.org/0000-0002-3109-6629, Hérnandez-Rebollar, José Luis, Hornsby, Amber, House, Julian, Hughes, David, Luna, Abraham, Jáuregui-García, José Miguel, Mauskopf, Philip, Murias, Dulce, Papageorgiou, Andreas, Pascale, Enzo, Peretto, Nicolas ORCID: https://orcid.org/0000-0002-6893-602X, Pérez, Abel, Rowe, Samuel, Rodríguez, Iván, Sánchez-Argüelles, David, Smith, Matthew W. L. ORCID: https://orcid.org/0000-0002-3532-6970, Souccar, Kamal, Sudiwala, Rashmikant ORCID: https://orcid.org/0000-0003-3240-5304, Torres-Campos, Ana, Tucker, Carole ORCID: https://orcid.org/0000-0002-1851-3918, Velázquez, Miguel, Ventura-González, Salvador, Walker, Ian and Doyle, Simon ORCID: https://orcid.org/0000-0002-9054-986X 2024. Mexico-UK Submillimeter Camera for AsTronomy focal plane performance at the Large Millimeter Telescope. Journal of Astronomical Telescopes, Instruments, and Systems 10 (4) , 045003. 10.1117/1.JATIS.10.4.045003

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Abstract

The Mexico-UK Submillimeter Camera for AsTronomy (MUSCAT) is a continuum camera in the 1.1-mm band for the Large Millimeter Telescope (LMT), with 1458 lumped-element kinetic inductance detectors distributed across six arrays. Installed on the telescope at the end of 2021, we present the characterization of the detector beams of four of the six arrays based on the beam map observations of bright point sources developed during the first commissioning campaign between February and June 2022. With all the observations, we estimate the average positions of each detector with an average error in azimuth of less than 0.70 arcsec and less than 1.05 arcsec in elevation. From the positions, we created the coadded maps of all the detectors, from which we selected only eight observations to calculate the mean beam width of MUSCAT-LMT, of 6.32 ± 0.36 arcsec × 5.78 ± 0.19 arcsec . By stacking the maps, we identify the sidelobes with three main structures whose amplitudes are ∼ 3 % with respect to the main beam.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Publisher:	Society of Photo-optical Instrumentation Engineers
ISSN:	2329-4124
Date of First Compliant Deposit:	28 October 2024
Date of Acceptance:	11 September 2024
Last Modified:	29 Oct 2024 12:45
URI:	https://orca.cardiff.ac.uk/id/eprint/173482

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