Teledyne sensors launch on ESA’s Sentinel-3C and FLEX missions

Teledyne Space Imaging sensors launched aboard two European Space Agency Earth-observation missions on Sept. 16, 2026, extending climate and vegetation monitoring from orbit. The instruments will help track ocean colour, land use, plant health and carbon-cycle activity.

Why it matters: - The launches add new space-based data streams for climate monitoring, ocean forecasting, environmental assessment and vegetation research. - Sentinel-3C is expected to maintain continuity in long-term Earth-observation records as it eventually replaces Sentinel-3A. - FLEX is designed to give scientists a new way to measure photosynthesis and better understand how carbon moves between plants and the atmosphere.

What happened: - Teledyne Space Imaging technology launched aboard ESA’s Sentinel-3C and Fluorescence Explorer (FLEX) missions on Sept. 16, 2026. - The satellites lifted off together on a Vega C rocket from Europe’s Spaceport in French Guiana. - Sentinel-3C and FLEX are both Earth-observation missions focused on oceans, land surfaces and vegetation.

The details: - ESA designed Sentinel-3C, and EUMETSAT will operate the satellite. - Sentinel-3C is the third satellite in the Sentinel-3 series and part of Copernicus, the EU Space Programme’s Earth observation campaign. - Teledyne supplied five CCD55-20 detectors for Sentinel-3C’s Ocean and Land Colour Instrument, or OLCI. - The CCD55-20 detectors are back-illuminated, frame-transfer CCDs optimized for hyperspectral imaging. - The Sentinel-3C detectors observe visible and near-infrared wavelengths from 0.4 to 1.04 µm. - The OLCI sensors will help map ocean colour, vegetation cover and land use. - Sentinel-3A launched in 2016, and Sentinel-3B launched in 2018. - Once fully commissioned, Sentinel-3C is expected to take over from Sentinel-3A. - Teledyne supplied three CCD325 detectors for FLEX’s Fluorescence Imaging Spectrometer, or FLORIS. - The FLEX detectors image wavelengths from 0.5 to 0.78 µm. - The FLORIS sensors are engineered to measure the fluorescent signal released by plants during photosynthesis. - The fluorescence measurements will indicate photosynthetic efficiency, plant health and stress. - The signal strength also serves as a direct indicator of how much carbon dioxide is being pulled from the atmosphere during photosynthesis. - The FLEX data will help scientists study terrestrial vegetation and how plants interact with carbon and water cycles.

Between the lines: - The Sentinel-3C and FLEX launches show how Earth-observation missions increasingly depend on specialized imaging sensors to turn raw orbital data into usable climate and ecosystem measurements. - Teledyne’s role across both missions suggests demand for detectors that can support both broad environmental monitoring and more targeted biological measurements. - The FLEX mission is notable because it focuses on plant fluorescence, a less common but potentially valuable signal for understanding ecosystem health and agricultural conditions.

What's next: - Sentinel-3C will enter full commissioning before assuming Sentinel-3A’s role in the Sentinel-3 series. - FLEX will begin delivering data that scientists can use to study photosynthesis, ecosystem function and carbon movement. - Researchers are expected to use the new observations to support agricultural management and food security analysis.