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NRAO Home > CASA > CASA Task Reference Manual |
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0.1.49 importfits
Requires:
Synopsis
Convert an image FITS file into a CASA image
Description
Convert an image FITS file into a CASA image
Keyword arguments: fitsimage – Name of input image FITS file default: none; example=’3C273XC1.fits’ imagename – Name of output CASA image default: none; example: imagename=’3C273XC1.image’ whichrep – If fits image has multiple coordinate reps, choose one. default: 0 means first; example: whichrep=1 whichhdu – If fits file contains multiple images, choose this one (0 == first) default=-1 use the first valid one; example: whichhdu=1 zeroblanks – Set blanked pixels to zero (not NaN) default=True; example: zeroblanks=True overwrite – Overwrite pre-existing imagename default=False; example: overwrite=True defaultaxes – Add the default 4D coordinate axes where they are missing; value True requires setting defaultaxesvalues default=False, example: defaultaxes=True defaultaxesvalues – List of values to assign to added degenerate axes when defaultaxes==True (ra,dec,freq,stokes) For existing axes, empty strings can be given as values. For the directions and spectral values, any valid angle/frequency expressions can be given. default = [], example: defaultaxesvalues=[’19h30m00’, ’-02d30m00’, ’88.5GHz’, ’Q’] beam – List of values to be used to define the synthesized beam [BMAJ,BMIN,BPA] (as in the FITS keywords) default = [] (i.e.take from FITS file), example: beam=[’0.35arcsec’, ’0.24arcsec’, ’25deg’]
Arguments
Inputs |
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fitsimage |
| Name of input image FITS file
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| allowed: | string |
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| Default: |
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imagename |
| Name of output CASA image
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| allowed: | string |
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| Default: |
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whichrep |
| If fits image has multiple coordinate reps, choose one.
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| allowed: | int | |
| Default: | 0 |
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whichhdu |
| If its file contains multiple images, choose one (0 = first
HDU, -1 = first valid image).
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| allowed: | int | |
| Default: | -1 |
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zeroblanks |
| Set blanked pixels to zero (not NaN)
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| allowed: | bool | |
| Default: | True |
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overwrite |
| Overwrite pre-existing imagename
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| allowed: | bool |
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| Default: | False |
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defaultaxes |
| Add the default 4D coordinate axes where they are
missing; value True requires setting defaultaxesvalues
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| allowed: | bool |
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| Default: | False |
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defaultaxesvalues |
| List of values to assign to added degenerate axes when
defaultaxes==True (ra,dec,freq,stokes)
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| allowed: | variant |
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| Default: | [] |
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beam |
| List of values to be used to define the synthesized beam
[BMAJ,BMIN,BPA] (as in the FITS keywords)
| |
| allowed: | variant |
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| Default: | [] |
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importfits(fitsimage=’ngc3256.fits’, imagename=’ngc3256.im’, overwrite=True)
More information about CASA may be found at the
CASA web page
Copyright © 2016 Associated Universities Inc., Washington, D.C.
This code is available under the terms of the GNU General Public Lincense
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