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Andrew Dolphin Raytheon Company |
Phone: (520)665-5989 E-mail: adolphin -at- raytheon.com |
HSTphot is a photometry package specifically designed for use with HST WFPC2 data. It uses a library of Tiny Tim PSFs for different locations of the star on the camera, as well as locations of the star's center within the pixel, to center the star and to correct an aperture magnitude. HSTphot is optimized for running in undersampled conditions (like WFPC2), and could certainly be modified, given some effort, to other instruments if undersampled conditions are present. It would not be worth the effort, however, to modify HSTphot for use in non-undersampled conditions, as it would run very inefficiently.
A number of utility programs are also included with the HSTphot distribution. These utilities provide basic aligning, aperture correction, and combination features, as well as artificial star tests and analysis, radial profiles, and other uses.
HSTphot now comes with a "multiphot" program, which runs the photometry solution simultaneously on multiple images.