Data on how long each calibration dataset requires

These numbers were last measured on a selection of dates in July-September of 2021, using the attached spreadsheet: cal_timings.xlsx​

The latest estimates calculated on 20 Sep 2021 are:

Instrument	Cal	minutes
HPF	evening A	43
HPF	evening C	45
HPF	morning A	72
HPF	morning C	45
LRS2	lamps	26
VIRUS	lamps	19
LRS2/VIRUS	biases	11
LRS2/VIRUS	darks	22

note that the morning cals' "dark dome" time finishes after about 52 minutes, since the internal LFC and Etalon cals can be acquired with dome lights on as long as the PFIP shutter is not opened.