We have only had three nights this season to determine transformation coefficients, and the scatter is too large to report right now. However, we did quite a bit of calibration work earlier in the year with SRO50, and those transformation coefficients look very similar to the newer determinations. Until I've had a couple more nights to get a good mean for this season, use last season's numbers:
Tv = -0.016 +/- 0.010
Tbv = 0.950 +/- 0.007
Tvr = 1.058 +/- 0.033
Tri = 0.935 +/- 0.022
Tvi = 1.004 +/- 0.009
kv = 0.174 +/- 0.030
kbv = 0.126 +/- 0.016
kvr = 0.039 +/- 0.014
kri = 0.052 +/- 0.017
kvi = 0.091 +/- 0.013
Arne
Links:
[1] http://www.aavso.org/forums/variable-star-observing/aavsonet
[2] http://www.aavso.org/category/tags/aavsonet
[3] http://www.aavso.org/category/tags/sro50