I have a LUT table containing 256 luminance values for the corresponding pixels obtained through a spectroradiometer which I do not have access to now. I cannot seem to find the relative function to implement into the code for which I can use the corrected monitor. I do not know if I need the GammaCalculator or related functions but do not think so. Also I am going to be presenting gratings not pictures or images which change contrast.

As I already have 256 values, I am assuming I do not need to fit them into a Gamma function as they seem to be linear already. I do not know what to go off of. I am fairly new to coding in general. I have looked at the source code for the Monitor class within PsychoPy but nothing I have tried seem to make a difference.
P.S. I do not want achieve this through the Monitor Center by entering values one by one as the experiment may not be restricted to a single computer. However, if there is a way to move the calibration file obtained through the Monitor Center, that may work.