I uses a simple exercise after a run of fits_review to make the figure below.

A view of an image we have fully processed with fits_review. % cdfp2reg.sh 20170903T095516.8_acm_sci.cdfp 5.0 red n n % cdfp2reg.sh 20170903T095516.8_acm_sci-usno.cdfp 3 cyan n n % ds9_open 900 900 % ds9_view 20170903T095516.8_acm_sci.fits zscale n 1 I manually displayed the region files named: 20170903T095516.8_acm_sci-usno.cdfp.reg 20170903T095516.8_acm_sci.cdfp.reg Since I had two cdfp files, I could easily cross-match the two sets by Ra,Dec using the routine cdfp2reg.sh, which in this case ran almost instantaneously. In the plot above, the RED circle indicate imgcat0 detections (5 sigma sky threshold) and the CYAN circles represnt sources from the USNO-B1.0 catalog (not down to a faint limit). Finally, the BLUE circles represent the targets that were positionally matched.Although a match radius of 5 arcsec was used, the rms scatter of the match residuals was in the range of a few thenths of an arcsec in both the Ra and Dec directions.

This file was originally: /home/sco/acm_play/20170903/red0/A5/S/README 

The runs are made in /home/sco/acm_play/20170903/red0/A5
to get the data:  ./S/GDAT 

For a single acm image, here is what I have after a complete fits_review run:
20170903T095516.8_acm_sci.fits           == image with a "rough" WCS installed
20170903T095516.8_acm_sci_detsig.fits
20170903T095516.8_acm_sci_bkg1.fits
20170903T095516.8_acm_sci_label0.fits
20170903T095516.8_acm_sci_sigma.fits
20170903T095516.8_acm_sci.cat0           == table file on imgcat0 run
20170903T095516.8_acm_sci.cdfp           == a cdfp version of above (using WCS)
20170903T095516.8_acm_sci-usno.cdfp      == the USNO catalog (cdfp) 

I made region files from the *.cdfp and viewed them on the image using:
 % cdfp2reg.sh 20170903T095516.8_acm_sci.cdfp 5.0 red n n 
 % cdfp2reg.sh 20170903T095516.8_acm_sci-usno.cdfp 3 cyan n n 
 % ds9_open 900 900  
 % ds9_view 20170903T095516.8_acm_sci.fits zscale n 1 

The region files were named:
20170903T095516.8_acm_sci-usno.cdfp.reg
20170903T095516.8_acm_sci.cdfp.reg         a cdfp version of above (using WCS) 

To get cross-match and view the results:
 % cdfpmatI.sh 20170903T095516.8_acm_sci.cdfp 20170903T095516.8_acm_sci-usno.cdfp 5.0 
 % cdfp2reg.sh cdfpmatI.cdfp 2 blue n n 

Finally, I zoomed to an interesting part of the image and made:   Fig1.png