EQUINOX / Standard FK5 (years)
RADECSYS/ The equatorial coordinate system 
WCS-ORIG/ Origin of the WCS value
CRPIX1  / Reference pixel in X (pixel)
CRPIX2  / Reference pixel in Y (pixel)
CRVAL1  / Physical value of the reference pixel X
CRVAL2  / Physical value of the reference pixel Y
CDELT1  / X Scale projected on detector (#/pix)
CDELT2  / Y Scale projected on detector (#/pix)
CTYPE1  / Pixel coordinate system
CTYPE2  / Pixel coordinate system
CUNIT1  / Units used in both CRVAL1 and CDELT1
CUNIT2  / Units used in both CRVAL2 and CDELT2
LONGPOLE/ The North Pole of standard system (deg)
PC001001/ Pixel Coordinate translation matrix
PC001002/ Pixel Coordinate translation matrix
PC002001/ Pixel Coordinate translation matrix
PC002002/ Pixel Coordinate translation matrix
CD1_1   / Pixel Coordinate translation matrix
CD1_2   / Pixel Coordinate translation matrix
CD2_1   / Pixel Coordinate translation matrix
CD2_2   / Pixel Coordinate translation matrix
C2PIX1  / Reference pixel in X on detector (pixel)
C2PIX2  / Reference pixel in Y on detector (pixel)
C2VAL1  / Physical value of the ref. pixel X (degree)
C2VAL2  / Physical value of the ref. pixel Y (degree)
C2ELT1  / X Scale projected on detector (#/pix)
C2ELT2  / Y Scale projected on detector (#/pix)
C2YPE1  / Pixel coordinate system
C2YPE2  / Pixel coordinate system
C2NIT1  / Units used in both C2VAL1 and C2ELT1
C2NIT2  / Units used in both C2VAL2 and C2ELT2
P2001001/ Pixel Coordinate translation matrix
P2001002/ Pixel Coordinate translation matrix
P2002001/ Pixel Coordinate translation matrix
P2002002/ Pixel Coordinate translation matrix
