This is the command mDiffExec that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
mDiffExec - Re-project and mosaic your images, with background rectification
mDiffExec [-p projdir] [-d] [-n(o-areas)] [-s statusfile] diffs.tbl template.hdr diffdir
Runs mDiff on all the pairs identified by mOverlaps.
Specifies path to the directory containing reprojected input images.
-d Turns on debugging.
-n No-area-images flag. Creates difference image without requiring _area FITS images
Output and errors are sent to statusfile instead of to stdout
Table generated by mOverlaps for the images in projdir.
FITS header template for output files.
Path to output files.
FITS images representing the differences for each pair of overlapping images. nimages is
the total number of images successfully processed, and nfailed is the number of images
that failed. The most likely cause of failure is that the FITS images overlapped, but
only in areas where they contained blank pixels (especially common in images with large
degree of rotation).
OK [struct stat="OK", count=nimages, failed=nfailed]
ERROR MPI initialization failed
ERROR Cannot open status file: statusfile
ERROR Cannot access diffdir
ERROR diffdir is not a directory
ERROR Invalid image metadata file: filename
ERROR Need columns: cntr1 cntr2 plus minus diff
ERROR mDiff error
First, diffs.tbl is generated using mOverlaps. Then mDiff can be run on reprojected
images, using this template.hdr.
$ mDiffExec -n -p projdir projdir/diffs.tbl template.hdr diffdir
[struct stat="OK", count=42, failed=0]
Use mDiffExec online using onworks.net services