Lindsey E. Davis (NOAO / IRAF)
A new interactive aperture photometry task for IRAF (GUIPHOT) is presented. The scientific capabilities of GUIPHOT include support for: automatically generating and saving object lists; annular or offset circular, elliptical, rectangular or polygonal sky apertures; multiple circular, elliptical, rectangular, or polygonal photometry apertures; simple shape and curve of growth analysis; and storing the results in a format compatible with other IRAF photometry software for further analysis. The graphical user interface contains facilities for: selecting and displaying image and object list data; creating, viewing and editing object lists; setting, reviewing, editing and saving parameter sets; selecting objects to measure either interactively or from the object list using the image display, image cursor, and region markers; displaying the results in both text table and graphical form; and interactively viewing help text. Although the focus of the task is on the interactive GUI facilities, GUIPHOT can be run non-interactively from a existing object list or from one generated at runtime. GUIPHOT is an enhanced version of an earlier prototype that was written to help develop the IRAF GUI facilities.