Fabrication and characterization of a high performance NIR 2kx2k MCT array at CEA and Lynred for astronomy applications

Event: SPIE Defense + Commercial Sensing, 2022, Orlando, Florida, United StatesInternational audienc

Flux reconstruction for the NIR camera CAGIRE at the focus of the Colibrí telescope

International audienceCAGIRE is the near infrared camera of the Colibrí robotic telescope, designed for the follow-up of SVOM alerts. It is based on the ALFA 2k x 2k detector, from the LYNRED French Company, operating in "Up the Ramp" mode. An observation consists in a series of short (1-2 minutes) exposures during which the pixels are read out every 1.3 second, while continuously accumulating charges proportionally to the received flux. We discuss here the preprocessing of CAGIRE data and a method that can be used to recover the flux received by each pixel from the slope of the ramp