FITS Image Import (importfits)

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6.16.2 FITS Image Import (importfits)

You can also use the importfits task to import a FITS image into CASA image table format. Note, the CASA viewer can read fits images so you don’t need to do this if you just want to look a the image. The inputs for importfits are:

#  importfits :: Convert an image FITS file into a CASA image:

fitsimage    =         ’’   #   Name of input image FITS file
imagename    =         ’’   #   Name of output CASA image
whichrep     =          0   #   Which coordinate representation (if multiple)
whichhdu     =          0   #   Which image (if multiple)
zeroblanks   =       True   #   If blanked fill with zeros (not NaNs)
overwrite    =      False   #   Overwrite pre-existing imagename
async        =      False   #   if True run in the background, prompt is freed

For example, we can read the above image back in

importfits(’ngc5921.demo.cleanimg.image.fits’,’ngc5921.demo.cleanimage’)

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