Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Microlensing Planet Finder: Completing the Census of Extrasolar
  Planets in the Milky Way   The Microlensing Planet Finder (MPF) is a proposed Discovery mission that
will complete the first census of extrasolar planets with sensitivity to
planets like those in our own solar system. MPF will employ a 1.1m aperture
telescope, which images a 1.3 sq. deg. field-of-view in the near-IR, in order
to detect extrasolar planets with the gravitational microlensing effect. MPF's
sensitivity extends down to planets of 0.1 Earth masses, and MPF can detect
Earth-like planets at all separations from 0.7AU to infinity. MPF's extrasolar
planet census will provide critical information needed to understand the
formation and frequency of extra solar planetary systems similar to our own.

25
The categories of this paper are: patt-sol
2
The categories of this paper are: math
33
The categories of this paper are: plasm-ph
17
The categories of this paper are: q-fin
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The categories of this paper are: acc-phys
18
The categories of this paper are: econ
36
The categories of this paper are: cmp-lg
12
The categories of this paper are: nucl-th
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The categories of this paper are: comp-gas
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The categories of this paper are: solv-int
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The categories of this paper are: bayes-an
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The categories of this paper are: q-alg
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The categories of this paper are: nucl-ex
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The categories of this paper are: mtrl-th
16
The categories of this paper are: stat
31
The categories of this paper are: ao-sci