Transformation coefficients have been added for SRO50, BSM, W28 and W30, which allows you to transform B and V images using one of the two methods available in VPHOT.
Geir
Links:
[1] http://www.aavso.org/forums/variable-star-observing/vphot
[2] http://www.aavso.org/category/tags/transformation-coefficients