-oorder
SIP polynomial order to fit (default: 5)
-eext FITS HDU number to read WCS from (default 0 = primary)
-S Do NOT do the wcs_shift thing
-s Treat input as Scamp .head file
-t Override the CTYPE* cards in the WCS header, and assume they are TAN.
-v +verboseness
-Wint Set the IMAGEW in the output file
-Hint Set the IMAGEH in the output file
-xnum x-low (default: 1)
-ynum y-low (default: 1)
-Xnum x-high (default: image width)
-Ynum y-high (default: image width)
-asize
Set the pixel values used to compute the distortion polynomials with (default: closest to 100
yielding whole number of steps)