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Sub-Pixel Response Measurement of Near-Infrared Sensors

N. Barron·M. Borysow·K. Beyerlein·M. Brown·C. Weaverdyck·W. Lorenzon·M. Schubnell·G. Tarle·A. Tomasch
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Abstract

Wide-field survey instruments are used to efficiently observe large regions of the sky. To achieve the necessary field of view, and to provide a higher signal-to-noise ratio for faint sources, many modern instruments are undersampled. However, precision photometry with undersampled imagers requires a detailed understanding of the sensitivity variations on a scale much smaller than a pixel. To address this, a near-infrared spot projection system has been developed to precisely characterize near-infrared focal plane arrays and to study the effect of sub-pixel non uniformity on precision photometry. Measurements of large format near-infrared detectors demonstrate the power of this system for understanding sub-pixel response.

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N. Barron, M. Borysow, K. Beyerlein, M. Brown, C. Weaverdyck, W. Lorenzon, M. Schubnell, G. Tarle, A. Tomasch. 2006-11-10. Sub-Pixel Response Measurement of Near-Infrared Sensors. https://doi.org/10.1086/517620

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