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Close the SCP and DTP if you have not already done so. If one or both are frozen, use the ICS Hub → Kill Processes to close them.
Open a terminal
cd ~/igrins_admin
source run_det_restart.sh
Put in the igrins password used to log into the Instrument Control Computer.
Wait a minute while it runs.
If you see nothing but a bunch of zeros scrolling by for a few minutes, the script did not work and you will need to press control c to kill the script and then proceed to the instructions for power cycling the detector controllers below.
If the script works, when it is finished reopen the SCP and DTP.
Take a single + test exposures to confirm all three detectors read out.
Note: Resetting the H-band detector can leave a strong electronic signal on the detector that looks like a bright column. It will slowly fades away over time. Take a 30 second test exposure to see if it is there. You might want to wait 10-20 minutes before continuing observations to allow time for most of the signal to fade away.
If this does not resolve the issue, you will need to power cycle the detector readout electronics controllers. Do the following:
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Hopefully this will get everything running correctly and you can proceed with your observations. If not, try contacting an IGRINS Team Member for help.
Be Note: Again be aware that restarting the H band detector leaves can leave a bright column of signal. This , that will eventually slowly fade away, and for the most part subtracts . Consider waiting 10-20 minutes before (re)starting observations to allow time for it to fade. After that, any residual signal should be weak enough to subtract out during the data reduction process.
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