H4RG characterization for high-resolution infrared spectroscopy

Étienne Artigau; Jonathan Saint-Antoine; Pierre-Luc Lévesque; Philippe Vallée; René Doyon; Olivier Hernandez; Claire Moutou

doi:10.1117/12.2314475

12 July 2018 H4RG characterization for high-resolution infrared spectroscopy

Étienne Artigau, Jonathan Saint-Antoine, Pierre-Luc Lévesque, Philippe Vallée, René Doyon, Olivier Hernandez, Claire Moutou

Author Affiliations +

Proceedings Volume 10709, High Energy, Optical, and Infrared Detectors for Astronomy VIII; 107091P (2018) https://doi.org/10.1117/12.2314475
Event: SPIE Astronomical Telescopes + Instrumentation, 2018, Austin, Texas, United States

Abstract

Large-format infrared arrays are enablers for a variety of astronomical applications, from wide-field imaging to very high-resolution spectroscopy over a wide range of wavelength. We present the optimization of the science-grade H4RG array used in the SPIRou high-resolution spectrograph designed for high-precision velocity measurements. In SPIRou nominal science operation, the array is used in a relatively low flux regime, well below the full-well of the arrays and, for some applications, the readout noise is a major contributor to the overall signal-to-noise budget. We describe the detector fine-tuning process as well as the derived properties and their impact on performances. We identify persistence as potentially problematic under certain circumstances for infrared m/s velocimetry.

Conference Presentation

Citation Download Citation

Étienne Artigau, Jonathan Saint-Antoine, Pierre-Luc Lévesque, Philippe Vallée, René Doyon, Olivier Hernandez, and Claire Moutou "H4RG characterization for high-resolution infrared spectroscopy", Proc. SPIE 10709, High Energy, Optical, and Infrared Detectors for Astronomy VIII, 107091P (12 July 2018); https://doi.org/10.1117/12.2314475

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