How CTE Affects Extended Sources

Physics

Scientific paper

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Hubble Space Telescope, Hst, Space Telescope Science Institute, Wide Field Camera 2, Wfc2

Scientific paper

We investigate the effects of CTE on the shape and structure of extended sources. We subtracted pairs of images of individual galaxies observed near and far from the read-out amplifier. The average profile of the galaxy residuals is distinctly asymmetric and indicates that charge is primarily lost from the amplifier side of the galaxy image. The side of the galaxy away from the amplifier suffers little charge loss because charge traps are encountered have been filled and in addition, charge is detrapping. These results are by a simple model of the read-out process.

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