This is a bash script that uses a lot of other tasks. I use it mark the presumed IHMP center in an acam image. I frequntly use this with wcs_outline (which draws the acam outline).
% acam_ihmp_mark acam_dss.fits dss.fits 178.0 391.0 Usage: acam_ihmp_mark acam_dss.fits dss.fits 178.0 391.0 arg1 - name of input FITS image with WCS arg2 - name of input FITS image for display arg3 - X_acam of IHMP center arg4 - Y_acam of IHMP centerRecall that I can use a tool like "acam_fake" to build the dss.fits and acam_dss.fits images. In this case the image named acam_dss.fits is a simulated ACAM image that has WCS in the header. The pixel values used to render acam_dss.fits are taken from the DSS image (dss.fits).