![The GLAMR integrating sphere mounted on the thermal vacuum chamber during Landsat 9 OLI-2 testing.](https://landsat.gsfc.nasa.gov/wp-content/uploads/2024/03/OLI2GLAMR_March2024nb.jpg)
Landsat 9’s Operational Land Imager 2: A Well-Known Instrument
Landsat 9’s OLI-2 instrument was characterized in unprecedented detail using a new laser-based method of in-band spectral response testing. A continuous relative spectral response dataset and pre-launch testing details have been published in a recent paper.