NOTE: The sparcstation compilation option has been changed to solaris
(make solaris)
The current version is v6.3, which was released on June 15, 2004
Go to the download page to get this latest release.
Tiny Tim is a program which generates simulated Hubble Space Telescope point spread functions (PSFs). It is written in C and distributed as source code and runs on a wide variety of UNIX and VMS systems. Tiny Tim was written by John Krist. Early NICMOS support was provided by Richard Hook (ST-ECF/ESO).
Tiny Tim includes mirror zonal errors, time dependent aberrations (for the pre-repair instruments), field dependent obscuration patterns (for WF/PC-1 and WFPC2), and filter passband effects. It can produce a normally sampled or subsampled PSF. Output is a FITS image file.
Some examples of the use of Tiny Tim model PSFs are given below, along with some links to related on-line documents. As one can see, most of my projects deal with WFPC2.
Subtracting unsaturated WFPC2 PSFs
Convolving models with model PSFs
Deconvolving WFPC2 images
Also check out XZ Tauri for an example of subtracting
models from saturated WFPC2 PSFs
For an overview of the difficulties dealing with the field dependence and large angle scattering in WFPC2, take a look at my conference proceeding "WFPC2 Ghosts, Scatter, and PSF Field Dependence" from the "Calibrating Hubble Space Telescope: Post Servicing Mission" Workshop, May 15 - 17, 1995. 5.5MB Postscript file.
The WFPC2 Calibration group at STScI also has a WFPC2 PSF Subtraction Page.