STScI Tiny Tim is a stand-alone program for generating model PSFs for the Hubble Space Telescope imaging cameras. Written in standard C, it can be used on a wide variety of systems.
Emphasis is placed on ease of use.
Subsampling, Gaussian jitter modeling, and filter response characteristics are also included. Recent improvements to the latest version, 4.0, include mirror zonal error maps derived from on-orbit phase retrieval studies, which significantly improve the model accuracy compared to earlier versions.