Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Focal Plane Alignment and Detector Characterization for the Subaru Prime
  Focus Spectrograph   We describe the infrastructure being developed to align and characterize the
detectors for the Subaru Measurement of Images and Redshifts (SuMIRe) Prime
Focus Spectrograph (PFS). PFS will employ four three-channel spectrographs with
an operating wavelength range of 3800 $\AA$ to 12600 $\AA$. Each spectrograph
will be comprised of two visible channels and one near infrared (NIR) channel,
where each channel will use a separate Schmidt camera to image the captured
spectra onto their respective detectors. In the visible channels, Hamamatsu 2k
x 4k CCDs will be mounted in pairs to create a single 4k x 4k detector, while
the NIR channel will use a single Teledyne 4k x 4k H4RG HgCdTe device.

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The categories of this paper are: econ
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The categories of this paper are: dg-ga
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The categories of this paper are: alg-geom
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The categories of this paper are: funct-an
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The categories of this paper are: hep-ex
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The categories of this paper are: adap-org
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The categories of this paper are: supr-con
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The categories of this paper are: hep-ph
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The categories of this paper are: math-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
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The categories of this paper are: q-alg
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The categories of this paper are: mtrl-th
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The categories of this paper are: plasm-ph
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The categories of this paper are: math
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The categories of this paper are: nucl-th