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Instrument descriptors

Properties of the instrument that are associated with the instrument as a whole, rather than with a particular filter or detector channel, belong in descriptors in the instrument table file. Most of these relate to the filter mechanisms. In addition, it is convenient to have a character*72 descriptor called INSTNAM that gives the name or designation of the particular instrument; and one to describe the condition of the telescope optics, which will be treated at the end of this section. The descriptors are summarized in Table gif.





Pascal Ballester
Tue Mar 28 16:52:29 MET DST 1995