Flux reconstruction for the NIR camera CAGIRE at the focus of the Colibr\'i telescope

Authors :: de la Flèche, Alix Nouvel
Atteia, Jean-Luc
Valentin, Hervé
Larrieu, Marie
Boy, Jérémie
Gravrand, Olivier
Boulade, Olivier
Clemens, Jean-Claude
Secroun, Aurélia
Kajfasz, Eric
Llido, Olivier
Basa, Stéphane
Dolon, François
Floriot, Johan
Lombardo, Simona
Lamoure, Adrien
Rubaldo, Laurent
Fieque, Bruno
Roumegoux, Julien
Geoffray, Hervé
Watson, Alan M.
Lee, William H.
Butler, Nathaniel
Source :: Proc. SPIE 12191, X-Ray, Optical, and Infrared Detectors for Astronomy X, 121910Q (29 August 2022)
Publication Year :: 2022
Abstract: CAGIRE is the near infrared camera of the Colibr\'i 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.<br />Comment: 19 pages, 13 figures, \c{opyright} (2022) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE)

Database :: arXiv
Journal :: Proc. SPIE 12191, X-Ray, Optical, and Infrared Detectors for Astronomy X, 121910Q (29 August 2022)
Publication Type :: Report
Accession number :: edsarx.2209.00386
Document Type :: Working Paper
Full Text :: https://doi.org/10.1117/12.2627826

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