## Changes Introduced in V9.1.2

The following describes the most significant changes which occurred in the AST library between versions V9.1.0 and V9.1.2:

1. A bug in the way in which the FitsChanFitsChan class reads FITS-WCS headers that have more WCS axes than pixel axes has been fixed (i.e. axes for which there is no CRPIX value). Previously, the missing pixel axes were assigned a constant value 1.0. However, the default value for CRPIX specified by FITS-WCS Paper I is 0.0, not 1.0. So now the missing pixel axes are assigned the value 0.0.