.. _dark_selectors:

Reference Selection Keywords for DARK
+++++++++++++++++++++++++++++++++++++
CRDS selects appropriate DARK references based on the following keywords.
DARK is not applicable for instruments not in the table.

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Instrument Keywords                                                                                           
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FGS        INSTRUME, DETECTOR, READPATT, SUBARRAY, DATE-OBS, TIME-OBS                                         
MIRI       INSTRUME, DETECTOR, READPATT, SUBARRAY, DATE-OBS, TIME-OBS                                         
NIRCam     INSTRUME, DETECTOR, SUBARRAY, DATE-OBS, TIME-OBS                                                   
NIRISS     INSTRUME, DETECTOR, READPATT, SUBARRAY, DATE-OBS, TIME-OBS                                         
NIRSpec    INSTRUME, DETECTOR, READPATT, SUBARRAY, SUBSTRT1, SUBSTRT2, SUBSIZE1, SUBSIZE2, DATE-OBS, TIME-OBS 
========== ==================================================================================================

