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- W165291225 abstract "The charge-transfer efficiency (CTE) of the STIS CCD—the ability of the detector to move charge between adjacent pixels during readout—continues to decline. In this ISR, we explore the scientific impact of CTE effects on Cycle 18 observations. In corona-graphic imaging, CTE trails degrade the photometry and astrometry of objects beyond the brightest regions of the stellar PSF. In spectroscopy, CTE trails remove flux from the target spectrum. In both cases, trails from cosmic rays and hot pixels impart considerable noise to observations of faint targets. Tools to correct the photometry and astrometry of point sources are available, but they are not applicable to extended sources and do not reduce the noise imparted by CTE trails. A pixel-based CTE correction would address all of these concerns, but is not yet available for STIS." @default.
- W165291225 created "2016-06-24" @default.
- W165291225 creator A5029432454 @default.
- W165291225 date "2011-05-01" @default.
- W165291225 modified "2023-09-24" @default.
- W165291225 title "Effects of CTE Degradation on Cycle 18 Observations with the STIS CCD" @default.
- W165291225 hasPublicationYear "2011" @default.
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