N ASA/IPAC   E XTRAGALACTIC   D ATABASE

Help | Comment | NED Home


SIMPLE  =                    T /
BITPIX  =                  -32 /
NAXIS   =                    4 /
NAXIS1  =                  400 /
NAXIS2  =                  400 /
NAXIS3  =                    1 /
NAXIS4  =                    1 /
EXTEND  =                    T /Tables following main image
BLOCKED =                    T /Tape may be blocked
OBJECT  = '1557+708'
TELESCOP= 'VLA     '
INSTRUME= 'VLA     '
OBSERVER= 'AX1     '
DATE-OBS= '05/11/92'
DATE-MAP= '31/08/95'
BSCALE  =    1.00000000000E+00 /REAL = TAPE * BSCALE + BZERO
BZERO   =    0.00000000000E+00 /
BUNIT   = 'JY/BEAM '
EPOCH   =      1.950000000E+03 /EPOCH OF RA DEC
VELREF  =                    3 />256 RADIO, 1 LSR 2 HEL 3 OBS
ALTRPIX =      1.000000000E+00 /ALTENATE FREQ/VEL REF PIXEL
OBSRA   =    2.39404583333E+02 /ANTENNA POINTING RA
OBSDEC  =    7.08291666667E+01 /ANTENNA POINTING DEC
DATAMAX =      2.405970357E-02 /MAX PIXEL VALUE
DATAMIN =     -7.847824600E-04 /MIN PIXEL VALUE
CTYPE1  = 'RA---SIN'
CRVAL1  =    2.39404583333E+02 /
CDELT1  =     -8.333333972E-05 /
CRPIX1  =      2.000000000E+02 /
CROTA1  =      0.000000000E+00 /
CTYPE2  = 'DEC--SIN'
CRVAL2  =    7.08291666667E+01 /
CDELT2  =      8.333333972E-05 /
CRPIX2  =      2.000000000E+02 /
CROTA2  =      0.000000000E+00 /
CTYPE3  = 'FREQ    '
CRVAL3  =    1.41490000000E+09 /
CDELT3  =      5.000000000E+07 /
CRPIX3  =      1.000000000E+00 /
CROTA3  =      0.000000000E+00 /
CTYPE4  = 'STOKES  '
CRVAL4  =    1.00000000000E+00 /
CDELT4  =      1.000000000E+00 /
CRPIX4  =      1.000000000E+00 /
CROTA4  =      0.000000000E+00 /
HISTORY AIPS HEADER4  SHIFTYPE =           2      /AIPS Catalog Header Keyword
HISTORY ----------------------------------------------------------------------
HISTORY
HISTORY Image from: The First Caltech-Jodrell Bank VLBI Survey. III.
HISTORY VLBI and MERLIN observations at 5 GHz and VLA observations at 1.4 GHz.
HISTORY
HISTORY W. Xu, A. C. S. Readhead, T. J. Pearson, A. G. Polatidis, &
HISTORY P. N. Wilkinson 1995, ApJS, 99, 297, Figure 6.
HISTORY
HISTORY ----------------------------------------------------------------------
ORIGIN  = 'AIPSCALTECH              15JUL95'    /
DATE    = '31/08/95'                    / File written on dd/mm/yy
HISTORY AIPS   IMNAME='1557+708    ' IMCLASS='ICLN  ' IMSEQ=   2     /
HISTORY AIPS   USERNO=  735            /
HISTORY AIPS   CLEAN BMAJ=  4.1667E-04 BMIN=  4.1667E-04 BPA=   0.00
HISTORY AIPS   CLEAN NITER=     3000 PRODUCT=1   / NORMAL
END
XTENSION= 'BINTABLE'           / Extension type
BITPIX  =                    8 / Binary data
NAXIS   =                    2 / Table is a matrix
NAXIS1  =                   12 / Width of table in bytes
NAXIS2  =                 3000 / Number of entries in table
PCOUNT  =                    0 / Random parameter count
GCOUNT  =                    1 / Group count
TFIELDS =                    3 / Number of fields in each row
EXTNAME = 'AIPS CC '           / AIPS table file
EXTVER  =                    1 / Version number of table
TFORM1  = '1E      '           / FORTRAN format of field  1
TTYPE1  = 'FLUX            '   / Type (heading) of field  1
TUNIT1  = 'JY      '           / Physical units of field  1
TFORM2  = '1E      '           / FORTRAN format of field  2
TTYPE2  = 'DELTAX          '   / Type (heading) of field  2
TUNIT2  = 'DEGREES '           / Physical units of field  2
TFORM3  = '1E      '           / FORTRAN format of field  3
TTYPE3  = 'DELTAY          '   / Type (heading) of field  3
TUNIT3  = 'DEGREES '           / Physical units of field  3
ISORTORD=                -257
END

Back to NED Home