Dear colleagues,
here is a link to a preprint that discusses various (important) issues related to the interpretation of AIA data:
http://solar.physics.montana.edu/cgi-bin/eprint/index.pl?entry=15555
Those of you that were present at the excellent Mallorca meeting might recall the issues we raised there. The paper, which follows on from O'Dwyer et al., contains more.
I encourage all to follow the example in the Appendix to calculate your own AIA responses using CHIANTI. We will soon release v.7, but do not expect huge differences. We are working to try and improve the atomic data for AIA, more to come.
best wishes,