convert Nobeyama Image FITS to CASA
download python script (click with right mouse button and save): fixnrofits.tar.gz
then, unzip it by a command like tar -zxvf fixnrofits.tar.gz
usage: python3 fixnrofits.py [-h] [-f RESTFREQ] [-v VRAD] fitsname [outfitsname]
Fix FITS header to import NRO Image FITS into CASA.
positional arguments:
fitsname Input Image FITS name
outfitsname Output Image FITS name (optional). If not specified, overwrite input Image FITS.
optional arguments:
-h, --help show this help message and exit
-f RESTFREQ, --restfreq RESTFREQ
Rest frequency in GHz
-v VRAD, --velocity-type VRAD
if velocity is in the radio definition (default)
-v VOPT, --velocity-type VOPT
if velocity is in the optical definition
We have noticed that some of Nobeyama Image FITSs cannot be converted to
feed into CASA with this script successfully, probably due to incomplete
FITS header information. Note that we release this script with such
limitation.
If you encounter a problem with the following error
"SEVERE??????importfits::::casa??????Exception Reported:
Error in importfits: wcs wcsset_error: Ill-conditioned coordinate transformation parameter"
in importfits in CASA,
please download the current version of this software or please try
"sed -i -e 's/GLS/SFL/g' fitsname.fits"
on your UNIX/LINUX environment and do importfits.
2024-06-04 nro45mrt @ NRO
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convert Nobeyama Image FITS to CASA