Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Simons Observatory: the Large Aperture Telescope (LAT)   The Simons Observatory (SO) is a Cosmic Microwave Background (CMB) experiment
to observe the microwave sky in six frequency bands from 30GHz to 290GHz. The
Observatory -- at $\sim$5200m altitude -- comprises three Small Aperture
Telescopes (SATs) and one Large Aperture Telescope (LAT) at the Atacama Desert,
Chile. This research note describes the design and current status of the LAT
along with its future timeline.

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The categories of this paper are: comp-gas
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The categories of this paper are: nucl-ex
31
The categories of this paper are: ao-sci
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The categories of this paper are: alg-geom
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The categories of this paper are: patt-sol
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The categories of this paper are: funct-an
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The categories of this paper are: solv-int
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The categories of this paper are: atom-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: chao-dyn
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The categories of this paper are: nlin
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The categories of this paper are: math-ph
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The categories of this paper are: q-bio
0
The categories of this paper are: hep-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: eess