LDCM satellite
Oct 4, 2012Electromagnetic Interference/Capability (EMI/EMC) testing and structural dynamics testing completed for LDCM

Orbital Sciences Corporation recently completed Electromagnetic Interference/Capability (EMI/EMC) testing and structural dynamics testing of the Landsat Data Continuity Mission (LDCM) satellite. Pictured above, engineers at Orbital’s Satellite Manufacturing Facility in Gilbert, Ariz. place the satellite on the vibration table to perform the side-to-side X-axis vibration test to ensure the spacecraft can survive its rocket ride […]

Aug 22, 2012Thermal Detector Technology Used on TIRS

Source: NASA GSFC @ YouTube Aug 22, 2012 •  All objects emit infrared radiation and the characteristics of the infrared radiation are primarily dependent on the temperature of the object. One of the unique features of the new Quantum Well Infrared Photodetector (QWIP) instrument technology is the ability to, what engineers call “band gap.” This means […]

TIRS being hoisted
Jul 16, 2012Landsat Data Continuity Mission Becomes an Observatory

Source: NASA Jul 16, 2012 • Engineers at Orbital Sciences Corporation, Gilbert, Ariz., have installed the Thermal Infrared Sensor (TIRS) instrument back onto to the Landsat Data Continuity Mission (LDCM) spacecraft. With both the Operational Land Imager (OLI) and TIRS instruments now on the spacecraft, LDCM is a complete observatory.After the TIRS instrument was shipped to […]

spacecraft at Orbital Science Corp.
Mar 8, 2012LDCM Family Portrait

Related Links: + Details on LDCM Spacecraft & Instruments + NASA LDCM website + Landsat Data Continuity Mission

TIRS instrument
Feb 14, 2012NASA Landsat’s Thermal Infrared Sensor Arrives at Orbital

Source: Rani Gran, NASA’s Goddard Space Flight Center, Greenbelt, Md. A new NASA satellite instrument that makes a quantum leap forward in detector technology has arrived at Orbital Sciences Corp. in Gilbert, Ariz. There it will be integrated into the next Landsat satellite, the Landsat Data Continuity Mission (LDCM). The Thermal Infrared Sensor (TIRS) will take […]

TIRS
Feb 7, 2012It’s a Wrap: LDCM’s Thermal Instrument Ships

Yesterday the Landsat Data Continuity Mission’s Thermal Infrared Sensor (TIRS) passed its pre-ship review. After being packed in a special container, TIRS was loaded onto a truck for shipment to the spacecraft contractor, Orbital Sciences, Corp., at 10 a.m. on Tuesday, Feb. 7. The truck is scheduled to leave NASA Goddard on Wednesday and arrive […]

TIRS flight instrument
Jan 19, 2012LDCM Thermal Instrument Completes Pre-Ship Testing

LDCM’s thermal instrument (TIRS) completed the last of its functional testing at NASA Goddard Space Flight Center yesterday. For the next two weeks the instrument will go through a series of closing inspections before being shipped to the LDCM spacecraft contractor, Orbital Sciences, Corp. A Pre-Ship Review will be held on Monday, February 6th. And […]

A technician surveys the TIRS instrument and the calibration equipment
Nov 1, 2011Landsat’s TIRS Instrument Comes Out of First Round of Thermal Vacuum Testing

Source: Ellen Gray The Thermal Infrared Sensor (TIRS) that will fly on the next Landsat satellite came out of its first round of thermal vacuum testing Tuesday, October 4 at NASA’s Goddard Space Flight Center, Greenbelt, Md. Video: • TIRS comes out of thermal vacuum The two-month test marked the first time engineers evaluated the fully-assembled instrument […]

Operational Land Imager
Oct 18, 2011LDCM’s Operational Land Imager is Integrated onto Spacecraft

Engineers at Orbital Sciences Corporation, Gilbert, AZ mechanically integrated the Operational Land Imager (OLI) onto the Landsat Data Continuity Mission (LDCM) spacecraft. The integration took 3 days. This top photo shows OLI wrapped in electrostatic discharge blankets that also provide a barrier to particulate contamination. The lifting frame in the photo was removed after integration. […]

LDCM's Operational Land Imager's VIS/IR Instrument
Jul 8, 2011LDCM Operational Land Imager (OLI)—VIS/IR Instrument

Special Topics: LDCM and LDCM Components The Operational Land Imager (OLI) is being built by the Ball Aerospace and Technologies Corporation. The Ball contract was awarded in July 2007. OLI improves on past Landsat sensors using a technical approach demonstrated by a sensor flown on NASA’s experimental EO-1 satellite. OLI is a push-broom sensor with […]

LDCM's Calibration Subsystem of the Operational Land Imager
Jul 1, 2011The Calibration Subsystem for LDCM’s Operational Land Imager

Special Topics: LDCM and LDCM Components The Calibration Subsystem for the Operational Land Imager (OLI) on LDCM uses both the sun and the absence of light to establish the light and dark end points, respectively, of a scale used to interpret the collected reflectance data. It does this with a solar diffuser panel that is […]

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) that has special features to control undesired stray light (stray light is any light entering the optics from […]

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 and the temperature at which we must maintain our detectors in order to get optimal thermal […]

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 (one of a warm blackbody carried onboard and the other of a deep-space cold view). The Earth view […]