# Palomar Testbed Interferometer

> long-baseline interferometer at the American Palomar Observatory in San Diego County, California, US

**Wikidata**: [Q14683604](https://www.wikidata.org/wiki/Q14683604)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Palomar_Testbed_Interferometer)  
**Source**: https://4ort.xyz/entity/palomar-testbed-interferometer