There are a small number of changes to the xidl package that are required (or stronly recommended) for operation with FIREHOSE. We did not check in these changes ourselves to the xidl code base as this would make them out of sync with the publicly available tarball. You should make these changes by hand as part of the FIREHOSE installation process.
1. Inverse variance weighting bug:
In the procedure $XIDL_DIR/FIT/x_fitrej.pro, line 160:
change from:
upper=fitstr.hsig, $
to:
invvar=fit/fit, upper=fitstr.hsig, $
2. Fix memory leaks: add the following two lines:
in x_fndpeaks.pro, line 100:
if ptr_valid(fitstr.ffit) EQ 1 then ptr_free, fitstr.ffit
in x_fit.pro, line 211:
if ptr_valid(fitstr.ffit) EQ 1 then ptr_free, fitstr.ffit
3. Add FIRE as an instrument option:
in the file long_rdnoiseimg.pro, add at line 100:
ENDIF ELSE IF strcmp(instrument, 'FIRE') THEN BEGIN
rn_img = fltarr(nx,ny)
rn_img[*] = 10.0
[Note, this approximates the read noise for FIRE as 10e-, which is good enough for the purposes where this code is used. For a detailed calculation of the noise model we must find the noise as a function of Fowler or SUTR reads, which will be implemented soon]