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Calibration frames (flats, darks, arcs) are fairly straightforward with IGRINS.

In the upper-right corner of the Data Taking Software you select the type, number, and exposure times.

The number of fowler-samples in the H and K exposure boxes will be the default for the calibration frames, so set these before you press 'Run Calibration Mode'.

The default calibration frame settings are still being tested, but we recommend:

 

Typeexposure time (s)numberNumber of Fowler Reads
Dark301016
Flat off301016

Flat

301016
ThAr303

16

Then in a second set, with a different fowler number:
ThAr1031

UNe

1.6331
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