Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Submillimetre Imaging Polarimeter at the James Clerk Maxwell Telescope   A polarimeter has been built for use with the Submillimetre Common-User
Bolometer Array (SCUBA), on the James Clerk Maxwell Telescope (JCMT) in Hawaii.
SCUBA is the first of a new generation of highly sensitive submillimetre
cameras, and the UK/Japan Polarimeter adds a polarimetric imaging/photometry
capability in the wavelength range 350 to 2000 microns. Early science results
range from measuring the synchrotron polarization of the black hole candidate
Sgr A* to mapping magnetic fields inferred from polarized dust emission in
Galactic star-forming clouds. We describe the instrument design, performance,
observing techniques and data reduction processes, along with an assessment of
the current and future scientific capability.

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The categories of this paper are: gr-qc
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The categories of this paper are: q-fin
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The categories of this paper are: math
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The categories of this paper are: hep-th
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The categories of this paper are: cond-mat
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The categories of this paper are: ao-sci
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The categories of this paper are: comp-gas
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The categories of this paper are: econ
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The categories of this paper are: atom-ph
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The categories of this paper are: plasm-ph
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The categories of this paper are: adap-org
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The categories of this paper are: eess
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The categories of this paper are: dg-ga
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The categories of this paper are: chao-dyn
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The categories of this paper are: solv-int
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The categories of this paper are: chem-ph