RST Optical Telescope Build Progress

The Nancy Grace Roman Space Telescope (RST) is a Hubble-size telescope with a large field of view for large surveys of the sky, cold temperatures for enabling near infrared imaging, and controlled temperature stability for long exposures and coronagraphy. The OTA includes the primary mirror, secondary mirror, and aft optics for inserting light into the Wide Field Instrument and the Coronagraph Instrument. The testing of the optical assemblies and structures are nearly complete and ready for telescope integration. Pictures and descriptions of the assemblies will be provided, followed by performance results achieved at these level of assemblies.