Valentina Tardugno (NYU) and I are looking at the NASA TESS housekeeping data: What parts of it are relevant to understanding the light curves? The weird thing is: We are asking this by asking: What housekeeping data can be reliably predicted using the light curves? Why this way? Because the light curves are higher in signal-to-noise (in general) than most channels of the housekeeping data. Today we went through all the relevant linear algebra for big linear models (which is where we are starting, of course!).
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