I see that VPhot already has values for Tv, Tbv, Tvr, Tri and Tvi for the BSM New Mexico.
Is Ti available by any chance?
I haven't calculated Ti, but will do so today or tomorrow.
The transformation coefficient for Ic for BSM NM, based on 4 recent nights of calibration photometry:
Ti(vi) = 0.002 +/- 0.021
where Ti(vi) means the coefficient for Ic, using the (V-Ic) color index.
Thanks for that.