This image header has a world coordinate system fit using sources from the Digitized Sky Survey. The original RA, DEC, and EQUINOX keywords are renamed WRA, WDEC, and WEQUINOX, and a new center, equinox, and FITS WCS keywords are added at the end of the file, as well as an IMWCS character string giving the version of the program which was used to fit the WCS.
$ imhead i17hw.fit SIMPLE = T / FITS STANDARD BITPIX = -32 / FITS BITS/PIXEL NAXIS = 2 / NUMBER OF AXES NAXIS1 = 251 / NAXIS2 = 239 / ORIGIN = 'KPNO-IRAF' / DATE = '18-08-96' / IRAFNAME= 'i17h.imh' / NAME OF IRAF IMAGE FILE IRAF-MAX= 0.000000E0 / DATA MAX IRAF-MIN= 0.000000E0 / DATA MIN IRAF-BPX= 32 / DATA BITS/PIXEL IRAFTYPE= 'REAL ' / PIXEL TYPE WCSDIM = 2 LTM1_1 = 1. LTM2_2 = 1. WAT0_001= 'system=physical' WAT1_001= 'wtype=linear' WAT2_001= 'wtype=linear' LTV1 = -7. LTV2 = -7. NCOMBINE= 2 INT_S = 20. WDEC = -25:15:01.90 WRA = 5:47:56.50 PLTSCALE= 1.16 EPOCH = 2000. WEQUINOX= 2000. SECPIX = 1.16 HISTORY New copy of i17h[6:256,6:244] RA = ' 5:47:57.167' DEC = '-25:14:39.72' EQUINOX = 2000 CTYPE1 = 'RA---TAN' CRVAL1 = 86.988196879 CRPIX1 = 125.5000 CDELT1 = -0.000315830 CROTA1 = 0.000 CTYPE2 = 'DEC--TAN' CRVAL2 = -25.244366374 CRPIX2 = 119.5000 CDELT2 = 0.000315830 CROTA2 = 0.000 IMWCS = 'IMWCS 1.0, 1 September 1996, Doug Mink, SAO' END