Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: ELTs Adaptive Optics for Multi-Objects 3D Spectroscopy : Key Parameters
  and Design Rules   In the last few years, new Adaptive Optics [AO] techniques have emerged to
answer new astronomical challenges: Ground-Layer AO [GLAO] and Multi-Conjugate
AO [MCAO] to access a wider Field of View [FoV], Multi-Object AO [MOAO] for the
simultaneous observation of several faint galaxies, eXtreme AO [XAO] for the
detection of faint companions. In this paper, we focus our study to one of
these applications : high red-shift galaxy observations using MOAO techniques
in the framework of Extremely Large Telescopes [ELTs]. We present the
high-level specifications of a dedicated instrument. We choose to describe the
scientific requirements with the following criteria : 40% of Ensquared Energy
[EE] in H band (1.65um) and in an aperture size from 25 to 150 mas. Considering
these specifications we investigate different AO solutions thanks to Fourier
based simulations. Sky Coverage [SC] is computed for Natural and Laser Guide
Stars [NGS, LGS] systems. We show that specifications are met for NGS-based
systems at the cost of an extremely low SC. For the LGS approach, the option of
low order correction with a faint NGS is discussed. We demonstrate that, this
last solution allows the scientific requirements to be met together with a
quasi full SC.

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The categories of this paper are: cmp-lg
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The categories of this paper are: supr-con
8
The categories of this paper are: hep-ex
16
The categories of this paper are: stat
14
The categories of this paper are: math-ph
7
The categories of this paper are: hep-th
12
The categories of this paper are: nucl-th
5
The categories of this paper are: gr-qc
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The categories of this paper are: mtrl-th
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The categories of this paper are: chao-dyn
4
The categories of this paper are: cond-mat
20
The categories of this paper are: acc-phys
3
The categories of this paper are: physics
10
The categories of this paper are: q-bio
1
The categories of this paper are: cs
21
The categories of this paper are: adap-org