Convolving new filters

Hey,

I’m trying to convolve some more filters without much success at least in case of WISE/ALLWISE. For IPHAS data I just pulled the throughput of the filters from
http://catserver.ing.iac.es/filter/list.php?instrument=WFC&filtersystem=BroadAndNarrowBand&availability=Yes
This appeared to have worked fine, assuming the idea of using them was correct. For WISE I only found the relative spectral response according to section v. of:
http://wise2.ipac.caltech.edu/docs/release/prelim/expsup/sec4_3g.html

If I plug them into
f = Filter()
f.name = ...
f.central_wavelength = ...
f.nu = ...
f.response = ...

The result of the convolution is a fits containing 0’s. I don’t know how to fix that problem so I’d appreciate a little hint or help.
Thank you
Heim

Start by reproducing the convolution with the Filter fields shown in the issue, using the IPHAS throughput and WISE/ALLWISE response data. Inspect why the resulting FITS contains only zeros and compare the filter inputs and convolution output. Done means identifying the cause and producing a nonzero, valid convolution for the affected filters.

Written by the indexing model from the issue text.