Allow lightkurve's psf fitting priors to be input in image coordinates and/or RA, Dec about lightkurve HOT 4 CLOSED

Currently working on this now with AMC!

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This is really cool! Which branch are you both working on?

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We are discussing the possibility of adding an option to apply pos_corr offsets directly inside the phot.fit(). Currently the sole argument of phot.fit() is tpf_flux. AMC and I suggest the following change:
Instead of taking tpf.flux as an argument, make it take in tpf. This way, the fitting code will have access to tpf.poss_corr1 (and 2).

poss_corr would be used to shift the priors left-right and up-down, to maintain the desired prior window in the face of spacecraft-induced motion. This feature can either be the default, or an opt-in keyword-arg.

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Closing this issue because we do not currently have resources to develop PRF photometry features, unfortunately!

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