Good evening, dear observers. GAIA G magnitudes are currently very popular for faint objects, as this mapping extends very deep. However, for magnitudes in the G channels of DSLR cameras, wouldn’t it be more appropriate to use BP GAIA magnitudes? In the attached curves, you can see how the transmission of the GAIA G band corresponds more closely to the EQ of a CCD, which spans from 400 nm to 1100 nm. The BP GAIA magnitude, on the other hand, restricts the transmission of its band to something closer to the DSLR G channels, or even V Johnson. I’m referring to the magnitudes of faint objects, as I already mentioned.
I have found a transformation relationship from GAIA magnitudes to V Johnson, a bit cumbersome to have to do these transformations every time, but it is what is at hand, if several comparison stars are used the errors are minimized.
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I think I would have filtered the G(bp)-G(rp)[mag] point at around +3.5! 