This federal contract award from the National Aeronautics and Space Administration (NASA) Goddard Space Flight Center was made to North Carolina State University (NC State) to support the design, development, and fabrication of primary and siderostat mirrors for the Balloon Experimental Twin Telescope for Infrared Interferometry (BETTII) telescope project. The award has a ceiling value of $129,085.74 and was granted on June 4, 2015, with a scheduled completion date of October 31, 2016. The contract involves three phases: 1) the design of the mirror support structure and details of the mirror lightweighting ($14,929), 2) the design and fabrication of the mirror support structure and flat turning mirrors ($139,750), and 3) the diamond turning of the primary mirrors and design/fabrication of the siderostat mirrors. This contract does not have a set-aside designation.