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The development of spaceborne coronagraphic technology is of paramountimportance to the detection of habitable exoplanets in visible light. In space,coronagraphs are able to bypass the limitations imposed by the atmosphere toreach deeper contrasts and detect faint companions close to their host star. Toeffectively test this technology in a flight-like environment, a high-contrastimaging testbed must be designed for operation in a thermal vacuum (TVAC)chamber. A TVAC-compatible high-contrast imaging testbed is undergoingdevelopment at the University of Arizona inspired by a previous missionconcept: The Coronagraphic Debris and Exoplanet Exploring Payload (CDEEP). Thetestbed currently operates at visible wavelengths and features a BostonMicromachines Kilo-C DM for wavefront control. Both a vector vortex coronagraphand a knife-edge Lyot coronagraph operating mode are under test. The opticswill be mounted to a 1 x 2 meter pneumatically isolated optical bench designedto operate at 10^-8 torr and achieve raw contrasts of 10^-8 or better. Thevalidation of our optical surface quality, alignment procedure, and first lightresults are presented. We also report on the status of the testbed'sintegration in the vaccum chamber.

The Space Coronagraph Optical Bench (SCoOB): 1. Design and Assembly of a  Vacuum-compatible Coronagraph Testbed for Spaceborne High-Contrast Imaging  Technology