...
Observatory1
http://kanatatmp.g.hatena.ne.jp/kanataobslog/20111011/p1
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Archive2
http://people.physics.tamu.edu/pbrown/SwiftSN/
swiftsn.html
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... IRAF3
IRAF
is distributed by the National Optical Astronomy Observatory,
which is operated by AURA under cooperative agreement with the
National Science Foundation
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astronomers4
http://www.rochesterastronomy.org/sn2011/sn2011df.html
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database5
http://ned.ipac.caltech.edu/
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