84" Coude spectrum of HR7306
About this image
Helmut Abt took test exposures of star HR7306 in September 1973 in order to assess the efficiency of the newly completed coude feed telescope relative to its `host', the 84-inch (now 2.1-meter) telescope. This unique combination of a dedicated telescope and a high-dispersion spectrograph has produced many scientific insights (and even papers) over nearly three decades. See the article in the NOAO March 2001 newsletter (PDF format only).
Minimum credit line: Helmut Abt/NOAO/AURA/NSF
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