CCD Cross Talk

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Scientific paper

This program aims to verify the amount of cross talk in the ACS WFC detectors in the post SM4 era. Before the failure of ACS the cross talk was very low at gain=1 e-/DN and almost not existent at gain=2 e-/DN. We plan to verify if the cross talk with the new electronics is still at levels that do not represent concerns for science. Both gain=1 and gain=2 will be tested. A bright extended source and several bright {likely saturated} stars will be used for the test. The sources will be positioned in different quadrants to verify if any specific amplifier is more affected to cross talks than others. The program consists of two visits two orbits each. The visits are identical. The first one should be executed with the default correlated double sampling {CDS} {likely dual slope integrator}, the secon visit should be executed with the alternative CDS {clamps and sample}.;

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