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- W4297939794 abstract "The ambitious science goals of the Large Synoptic Survey Telescope (LSST) have motivated a search for new and unexpected sources of systematic error in the LSST camera. Flat-field images are a rich source of data on sensor anomalies, although such effects are typically dwarfed by shot noise in a single flat field. After combining many ($sim 500$) such images into `ultraflats' to reduce the impact of shot noise, we perform photon transfer analysis on a pixel-by-pixel basis and observe no spatial structure in pixel linearity or gain at light levels of 100 ke$^-$ and below. At 125 ke$^-$, a columnar structure is observed in the gain map--we attribute this to a flux-dependent charge transfer inefficiency. We also probe small-scale variations in effective pixel size by analyzing pixel-neighbor correlations in ultraflat images, where we observe clear evidence of intrinsic variation in effective pixel size in an LSST prototype sensor near the $sim .3%$ level." @default.
- W4297939794 created "2022-10-01" @default.
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- W4297939794 date "2015-04-23" @default.
- W4297939794 modified "2023-09-23" @default.
- W4297939794 title "Intrinsic Pixel Size Variation in an LSST Prototype Sensor" @default.
- W4297939794 doi "https://doi.org/10.48550/arxiv.1504.06088" @default.
- W4297939794 hasPublicationYear "2015" @default.
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