Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Measurement of optical turbulence in free atmosphere above Mt.Maidanak
  in 2005-2007   Results of 2005-2007 campaign of measurement of the optical turbulence
vertical distribution above Mt. Maidanak are presented. Measurements are
performed with the MASS (Multi-Aperture Scintillation Sensor) device which is
widely used in similar studies during last years at several observatories
across the world. The data analysis shows that median seeing in free atmosphere
(at altitudes above 0.5km) is 0.46 arcsec and median isoplanatic angle is 2.47
arcsec. Given a rather long atmospheric coherence time (about 7 ms when the
seeing is good) such conditions are favorable for adaptive optics and
interferometry in the visible and near-IR.

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The categories of this paper are: math
32
The categories of this paper are: atom-ph
12
The categories of this paper are: nucl-th
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The categories of this paper are: funct-an
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The categories of this paper are: cond-mat
5
The categories of this paper are: gr-qc
25
The categories of this paper are: patt-sol
26
The categories of this paper are: bayes-an
33
The categories of this paper are: plasm-ph
10
The categories of this paper are: q-bio
15
The categories of this paper are: nucl-ex
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The categories of this paper are: chao-dyn
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The categories of this paper are: nlin
37
The categories of this paper are: supr-con
11
The categories of this paper are: hep-lat
1
The categories of this paper are: cs