aXe-2.3 is part of STSDAS 3.14, which was released in August 2011. Within STSDAS, aXe resides in the sub-package 'analysis.slitless.axe'.

Along with the release of aXe v2.3 there is also an updated version of the aXe User Manual (pdf format). In addition, the most recent version of the aXe Cookbook (pdf format) may also be helpful when running the software.

Release notes