June 2011


Mirrors for the LDCM Operational Land Imager (OLI) Telescope.
Jun 20, 2011LDCM Operational Land Imager (OLI) Telescope

Special Topics: LDCM and LDCM Components The OLI telescope uses a four-mirror compact design. The optics are positioned inside a lightweight, yet highly stable, carbon composite optical bench (i.e., a substrate on which the optics are mounted) [...]

LDCM Thermal Infrared Sensor (TIRS) Cryocooler
Jun 20, 2011The Cryocooler—Part of the LDCM Thermal Infrared Sensor (TIRS)

Special Topics: LDCM and LDCM Components The Cryocooler is like a big refrigerator, except that it cools to cryogenic temperatures (below −150°C, −238°F or 123K). It is responsible for cooling our detectors to 43K (-382F). This is very cold Read [...]

Engineer (in a "bunny suit") working on the Scene Select Mechanism of the Thermal Infrared Sensor (TIRS) that will fly on LDCM.
Jun 14, 2011Meet the “Scene Select Mechanism”—Part of the LDCM Thermal Infrared Sensor

Special Topics: LDCM and LDCM Components The Scene Select Mechanism is an apparatus that rotates the LDCM Thermal Infrared Sensor (TIRS) mirror among three scenes: the Earth view (“nadir;” when imaging the Earth), and two calibration views Read [...]