RGB <-> Gaia G, R_P, B_P conversion formulae.

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    Paul Leyland
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    Folk here might be interested in https://arxiv.org/pdf/2107.08734.pdf which I discovered only this morning.

    Lots of amateurs do not have any filters other than those built into their DSLR or OSC CMOS Bayer layers.

    This paper uses Gaia EDR3 G, B_P and R_P data to calibrate the RGB spectral response of an average of 28 common cameras.

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