Aperture Photometry Tool, v. 2.6.0, is now available:
There are enhancements and a bug fix in this release.
Added a new tool that computes the angular distance between two points on the sky, which is now available as the “Angular Distance Calculator” via the menu bar under the “Tools” menu.
Made source-code and tool-panel-layout improvements.
Bug fix: Modified the software to wrap around the negative values in the positive range when reading in FITS images with BITPIX=8. Thanks to Richard Kron for reporting this problem.