Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: ASTEP South: An Antarctic Search for Transiting Planets around the
  celestial South pole   ASTEP South is the first phase of the ASTEP project that aims to determine
the quality of Dome C as a site for future photometric searches for transiting
exoplanets and discover extrasolar planets from the Concordia base in
Antarctica. ASTEP South consists of a front-illuminated 4k x 4k CCD camera, a
10 cm refractor, and a simple mount in a thermalized enclosure. A double-glass
window is used to reduce temperature variations and its accompanying turbulence
on the optical path. The telescope is fixed and observes a 4 x 4 square degrees
field of view centered on the celestial South pole. With this design, A STEP
South is very stable and observes with low and constant airmass, both being
important issues for photometric precision. We present the project, we show
that enough stars are present in our field of view to allow the detection of
one to a few transiting giant planets, and that the photometric precision of
the instrument should be a few mmag for stars brighter than magnitude 12 and
better than 10 mmag for stars of magnitude 14 or less.

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The categories of this paper are: physics
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The categories of this paper are: math
35
The categories of this paper are: mtrl-th
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The categories of this paper are: hep-th
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The categories of this paper are: solv-int
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The categories of this paper are: cond-mat
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The categories of this paper are: math-ph
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The categories of this paper are: nlin
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The categories of this paper are: hep-lat
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The categories of this paper are: cs
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The categories of this paper are: eess
34
The categories of this paper are: chem-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: plasm-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: atom-ph