We have attempted to reproduce Mike Lampton's calculation
of filter bandpass reconstruction using 10 blackbodies with 1% flux errors. We parameterize
the rest frame B band filter function with three quantities: a shift in the central
wavelength, a change in the FWHM of the bandpass, and a normalization dependent on both the
central wavelength shift and the FWHM. Using a NAG based chi square fitter, we compute mean
parameter fits, error and covariance matrices over 25 runs for each of the nine redshifted SNAP filters. A repeat calculation was
also performed using 3 blackbodies as a reference.
Listed below are the two output files from our calculations:
10 blackbody model
3 blackbody model
Results
Future
- Input a larger set of blackbody temperatures
- Utilize color information in chi square
- Input transfer errors and get 9x9 covariance of the filter set