[Last Change: 18 May 2012 (rev 5) — Page History]

SAOTrace Release Notes

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2.0.2

Enhancements

• SAOTrace can now read MARX generated aspect solution files

Bug Fixes

• specifying limits as densities sometimes caused the ray generator to infinitely loop.
• some Chandra dither files were rejected because timestamp validation tolerances were too high
• Chandra and MARX dither files are now assumed to be FITS formatted (previously the filename extensions were used to determine this).

Other

• SAOTrace now compiles on Red Hat Enterprise Linux 6

Upgrade Instructions

When upgrading from a previous version using the standard upgrade instructions, after following all of those instructions, rerun the build-saotrace command adding the following arguments to the command line:

-m -force -m -only -m scatter

For example,

$SRCDIR/build-saotrace -s $SRCDIR -d $INSTALLDIR -m -force -m -only -m scatter

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2.0.1

This release addresses inconsistencies in how SAOTrace interacts with Chandra aspect solution files when generating dithered observations.

Enhancements

• raygen, trace-shell and trace-nest now take a tstart parameter indicating the start time of the simulation.
• raygen: simulation start and durations are no longer obtained from the dither file.

API Changes

• The Chandra dither_asol() function no longer returns the pointing information from the Chandra asol file, as that information has been reported to be incorrect. The user should use the _PNT header keywords from the event file.

Build Fixes

• Builds should now succeed on Mac OS X case-insensitive file systems
• Builds should now work on platforms which symlink gfortran as f77
• Slackware 13.37.0 64bit is now supported

Known Build Issues

• On some platforms gmp and gsl will fail some of their tests. It's not always apparent that these failures are significant. In some cases the versions available from the OS vendor fail identically, but it's not known if the OS vendor evaluated the failures.