Thanks to the experience acquired during the preparations for the SNAP / JDEM mission, the team of researchers and engineers at IP2I has been involved in the development of the infrared channel of the Euclid telescope since the project was born in 2011. It actively participates in Euclid flight detector tests and brings her expertise in the definition of the characterization test series and in the interpretation of the results.
Two cryostats located at IP2I made possible to acquire the first data on the reserve detectors and to study the fine effects present at the pixel level. This allowed to establish the algorithms used for the characterization of flight detectors as well as the methods for correcting detector effects adapted to the reduction of scientific data and to monitor the behavior of detectors in flight.
Thanks to the fully automated data quality acquisition and validation systems developed at IP2I, the characterization of the flight detectors was able to run without intervention for several days and to accumulate a remarkable quantity of data.
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France delivers NISP infrared spectrophotometer for European space mission Euclid
After more than 10 years of design, construction and testing, the Near InfraRed SpectroPhotometer (NISP) was delivered to ESA on Tuesday, May 19, 2020. It will be installed in the telescope of the European astrophysical mission Euclid. The Institute of Physics of 2 Infinites of Lyon has importantly participated in the characterization and verification of the performance of infrared detectors, as well as in the analysis of scientific performances.
With the largest infrared camera ever sent in space, NISP will provide valuable information for the search for dark matter and dark energy. This detector is the result of international cooperation, coordinated by France, including in particular Italy, Germany, Spain, Denmark, Norway, and the United States.
As its name suggests, the instrument has the distinction of being able to operate in two different modes: photometric and spectroscopic. Specifically developed to meet the scientific objectives of the mission, this technological combination will allow the distances of billions of galaxies to be measured very precisely, thus probing a large part of the history of the Universe. With these measurements, scientists will be able to draw 3D maps of the Universe over time, crucial elements for understanding the evolution of its large structures.
