Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Photometry Using Kepler "Superstamps" of Open Clusters NGC 6791 & NGC
  6819   The Kepler space telescope has proven to be a gold mine for the study of
variable stars. Unfortunately, Kepler only returns a handful of pixels
surrounding each star on the target list, which omits a large number of stars
in the Kepler field. For the open clusters NGC 6791 and NGC 6819, Kepler also
reads out larger superstamps which contain complete images of the central
region of each cluster. These cluster images can potentially be used to study
additional stars in the open clusters. We present preliminary results from
using traditional photometric techniques to identify and analyze additional
variable stars from these images.

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The categories of this paper are: nlin
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The categories of this paper are: plasm-ph
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The categories of this paper are: physics
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The categories of this paper are: acc-phys
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The categories of this paper are: econ
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The categories of this paper are: q-alg
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The categories of this paper are: q-fin
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The categories of this paper are: alg-geom
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The categories of this paper are: hep-ex
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The categories of this paper are: atom-ph
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The categories of this paper are: hep-lat
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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: cs
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The categories of this paper are: nucl-th