Short answers, pulled from the story.
The POLDER instrument weighed approximately 100 kilograms and consumed 77 watts during imaging mode operations. It utilized a telecentric lens paired with a charge-coupled device matrix holding a resolution of 242 by 548 pixels.
POLDER first launched as a passenger instrument aboard ADEOS I on the 17th of August 1996. The mission ended prematurely after less than one year of operation following communication failure on the 30th of June 1997.
A second generation instrument named POLDER 2 launched in December 2002 aboard ADEOS II but operated for only 10 months. Engineers could not restore power to the system once the satellite's solar panel malfunctioned.
Operators permanently shut down the third generation instrument on board the French PARASOL microsatellite on the 18th of December 2013. This event marked the end of active POLDER operations for over two decades.
Scientists utilized specific wavelength ranges between 443 and 910 nanometers for distinct measurements. Shorter wavelengths spanning 443 to 565 nanometers measured ocean color properties while longer wavelengths covering 670 to 910 nanometers studied vegetation health.