Use the source boxes derived with a run of image_catalogs to create a "packed" sky images and derive a robust estimate of the sky statistics. A final normalized image (skymap2.fits) is created and the basic sky statistics are written to a local file named skymap2.out. Thie routine is now used in phot2 to establish the mean sky level.

 

% skymap2.sh --help  

% skymap2.sh 20191022T025524.2_acm_sci.fits  

% cat skymap2.out 
     58.4044       0.0151       7.6592    (skymean,m.e.,sigma)