Phase 2 Proposal Instructions for Cycle 10

5.13 Optional Parameters [Optional_Parameters]

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The Operating Modes of the instruments frequently have parameters that may be adjusted. The default parameter values that have been defined for the various Instrument Configurations and Operating Modes can be overridden by entries in Optional Parameters. See the instrument chapters in this document and the Instrument Handbooks for descriptions of the Optional Parameters.

If more than one Optional Parameter is entered, they can be separated by commas. The format that should be used is <parameter> = <value> (for example, BINAXIS1=1, BINAXIS2=1). If no entry is made, the default value will be used (e.g., BINAXIS1=1 would be used in STIS/CCD ACCUM Mode; see Mode = ACCUM Config = STIS/CCD).