WASHINGTON — The Laboratory for Atmospheric and Space Physics (LASP) in Boulder, Colorado, finished an ultraviolet sensor slated to fly on a U.S. geostationary weather satellite launching in 2017, NASA said in a Nov. 13 press release.

The Extreme Ultraviolet and X-ray Irradiance Sensors (EXIS) instrument will fly on the National Oceanic and Atmospheric Administration’s Geostationary Operational Environmental Satellite (GOES)-S satellite, the second in the GOES-R series slated to begin launching in 2016. NASA is managing procurement of the four GOES-R-series spacecraft, which are being assembled by Lockheed Martin Space Systems of Denver under a prime contract worth about $1.4 billion.

LASP is building four EXIS instruments. The third, for GOES-T, is now undergoing post-environmental testing calibration, NASA said in its press release.

Dan Leone is a SpaceNews staff writer, covering NASA, NOAA and a growing number of entrepreneurial space companies. He earned a bachelor’s degree in public communications from the American University in Washington.