These devices and missions may each be accessed on their own web pages. Palomar Testbed Interferometer, Keck Interferometer, Large Binocular Telescope, Space Infrared Telescope Facility, Space Interferometry Mission, DS-3 and the Next Generation Space Telescope.

Two main items require special additional development, interferometric nulling in space, and control of separate spacecraft and formation flying. Both of these items have development planned for precursor missions and ground observations. Both will also require some special development for TPF. NASA plans to fully support the development of TPF prior to full scale development.