The Palomar Testbed Interferometer (PTI) was a near-infrared, long-baseline stellar interferometer located at Palomar Observatory in California. First fringes were obtained in July 1995 and it was operational until December 2008.
PTI's development and early operations were carried out by the Jet Propulsion Laboratory (JPL) with funding from NASA under its TOPS, ASEPS, and Origins programs, with additional funding from the JPL Director's Discretionary Fund and the JPL Director's Research and Development Fund. Subsequent science operations were carried out by the NASA Exoplanet Science Institute (NExScI) with funding from NASA, the PHASES project, and the Infrared Processing and Analysis Center (IPAC).
PTI Instrument Description:
General interferometry information:
Data Product Definition
Observation Planning Support
During PTI operations, NExScI provided observation planning support through the getCal planning package, a suite of tools for meshing information on stars, selecting calibrators, and computing temporal accessibility and u-v coverage.
If you have any questions on PTI data please visit the the help desk page.