= 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: [attachment:cal_timings.xlsx]


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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.