This file summarizes several instrument specific items for the Gemini/Flamingos-2 spectrograph.
We recommend using sky OH line for the wavelength calibration. So you can ignore the default Gemini Arc calibrations when reducing your data with PypeIt.
It has been reported that the default
snr_thresh of 10
for Flamingos2 could detect some junk objects because the detector
is not quite clean. If you want to get rid of these junk objects, and
assuming your science object itself is bright,
snr_thresh = 20
You can use
pypeit_show_2dspec to visualize what was extracted from the
HK Grism and HK filter fluxing
There are second order contaminations when you use HK filter and HK Grism. Therefore, the flux at wavelength longer than 2.4 micron is not reliable.