All filters *should* represent total transmission: filter, detector, mirrors, atmosphere, etc...

IRAC filters (ch1,ch2,ch3,ch4) came from bruzual and charlot filters file
Sloan filters come from: http://www.sdss3.org/instruments/camera.php#Filters
ACS filters were generated by me from data in ACS handbook
WFC3 filters were generated by me from data in WFC3 handbook
WFPC2 filters were generated by me with synphot
WISE filters see Wright et al. 2010, received from Adam Stanford
I think I generated the j, h, and ks (2MASS) data from 2MASS data release documents, like:
http://www.ipac.caltech.edu/2mass/releases/second/doc/sec3_1b1.html
4star filters come from: http://obs.carnegiescience.edu/instrumentation/FourStar/OPTICS/filters.html
NEWFIRM filters were generated by me using just the filter + 3mm winter sky + ccd
UKIDSS filters come from http://svo.cab.inta-csic.es/theory/fps/index.php?id=UKIRT/UKIDSS.J&&mode=browse&gname=UKIRT&gname2=UKIDSS
GALEX filters come from http://adsabs.harvard.edu/abs/2005ApJ...619L...7M via http://www.astro.caltech.edu/~capak/cosmos/filters/
