Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Deep 610-MHz GMRT observations of the Spitzer extragalactic First Look
  Survey field - I. Observations, data analysis and source catalogue   Observations of the Spitzer extragalactic First Look Survey field taken at
610 MHz with the Giant Metrewave Radio Telescope are presented. Seven
individual pointings were observed, covering an area of 4 square degrees with a
resolution of 5.8'' x 4.7'', PA 60 deg. The r.m.s. noise at the centre of the
pointings is between 27 and 30 microJy before correction for the GMRT primary
beam. The techniques used for data reduction and production of a mosaicked
image of the region are described, and the final mosaic, along with a catalogue
of 3944 sources detected above 5 sigma, are presented. The survey complements
existing radio and infrared data available for this region.

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The categories of this paper are: nucl-ex
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The categories of this paper are: gr-qc
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The categories of this paper are: hep-lat
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The categories of this paper are: hep-ex
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The categories of this paper are: eess
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The categories of this paper are: hep-th
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The categories of this paper are: quant-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: math
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The categories of this paper are: solv-int
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The categories of this paper are: alg-geom
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The categories of this paper are: nucl-th
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The categories of this paper are: adap-org
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The categories of this paper are: nlin
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The categories of this paper are: funct-an
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The categories of this paper are: bayes-an