... systems[*]
Based on observations collected at Cerro Tololo Inter-American Observatory and the European Southern Observatory, La Silla, under project 66.C-0119(B).
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... Facility[*]
IRAF is distributed by the National Optical Astronomy Observatories, which is operated by the Association of Universities for Research in Astronomy, Inc. (AURA) under cooperative agreement with the National Science Foundation.
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Copyright ESO 2004