Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The concept of a stare-mode astrometric space mission   The concept of a stare-mode astrometric space mission is introduced. The
traditionally accepted mode of operation for a mapping astrometric space
mission is that of a continuously scanning satellite, like the successful
Hipparcos and planned Gaia missions. With the advent of astrometry missions
mapping out stars to 20th magnitude, the stare-mode becomes competitive. A
stare-mode of operation has several advantages over a scanning missions if
absolute parallax and throughput issues can be successfully addressed.
Requirements for a stare-mode operation are outlined. The mission precision for
a stare-mode astrometric mission is derived as a function of instrumental
parameters with examples given. The stare-mode concept has been accepted as
baseline for the NASA roadmap study of the Origins Billions Star Survey (OBSS)
mission and the Milli-arcsecond Pathfinder Survey (MAPS) micro-satellite
proposed project.

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The categories of this paper are: chem-ph
7
The categories of this paper are: hep-th
0
The categories of this paper are: hep-ph
2
The categories of this paper are: math
4
The categories of this paper are: cond-mat
18
The categories of this paper are: econ
11
The categories of this paper are: hep-lat
9
The categories of this paper are: nlin
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The categories of this paper are: supr-con
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The categories of this paper are: dg-ga
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The categories of this paper are: alg-geom
14
The categories of this paper are: math-ph
29
The categories of this paper are: funct-an
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The categories of this paper are: atom-ph
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The categories of this paper are: eess
15
The categories of this paper are: nucl-ex