Transmissions from Brad Tucker:
http://www.mso.anu.edu.au/~brad/filters.html

The first line of each filter is the zeropoint for that filter. 
If the filter is in the AB system, it is listed as 0.0 (or in otherwords -48.55). 
The others are for the zeropoint based on Vega. 
All wavelengths are in Angstroms and flux in F(ν)