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  • Position: ra,dec of image center
  • Size: NAXIS1, NAXIS2 in pixels, from FITS file
  • Resolution: sqrt(BMAJ*BMIN), beam axial ratio BMAJ/BMIN of the lowest frequency plane (resolution varies with frequency, most users will convolve to the lowest resolution)
  • start time: DATE-OBS from FITS file
  • end time: DATE-END from  FITS file
  • minimum frequency 
  • maximum frequency 
  • spectral resolution (spectral channel width (Hz); CRDELT3 CDELT3 in the FITS header)
  • project 
  • polarization types: I 

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