How to take PSF stars, i.e. How to work with the AO operator and TO to reduce overheads in order to quickly acquire a PSF star (only works when the target star is a similar brightness and in a similar part of the sky)
Non-linearity/Saturation: Pixels above 27000 DN are non-linear and must be corrected. Conservatively, pixels above ~45000 should be considered saturated because they can not be corrected to high precision. (See more at Calibration Data)