[Aavso-photometry] Software for combining time series data taken with different filters to calculate transformed magnitudes

[Lionel Catalan]

I have times series data for B,V, and I filters that I would like to combine
to calculate transformed magnitudes using transformation equations. I use a
filter wheel to change filters between images, so I have sequences of images
such as bvibvibvibvi etc.  Some images have to be rejected from time to time
due to wind or clouds, so the sequences are not exactly regular. I already
have determined the transformation coefficients for my system. Essentially,
I think that I need a program (or perhaps an excel macro) that can
interpolate instrumental magnitudes for each filter to common times so that
consistent values of b-v and v-i can be calculated.  I would appreciate any
suggestion.
 
Lionel CTE