LISA EDU Status

Abstract

LISA will be the first space-based gravitational wave observatory, enabling orders of magnitude greater sensitivity than the state-of-the-art LIGO facility. L3Harris is developing an engineering development unit (EDU) telescope in support of NASA, ESA and the LISA Consortium. The LISA EDU telescope validates a flight-like telescope design and reduces risks associated with stability, materials, assembly, integration, and testing. Mission requirements are unlike any other and require picometer-level stability across the entire telescope’s beam path, even in the presence of temperature variation and jitter. As a result, an all-glass telescope design was developed. The brittle structure represents a new state of the art for stable telescopes, but also introduces challenges with managing assembly, manufacturability, and survivability. From 2019-2024, the LISA EDU project has increased manufacturing readiness and technology readiness for the optical telescope element.