Solving the three cross-talk flavors on WIRCam and its HAWAII-2RG detectors

Loïc Albert; Marc Baril; Jeff Ward; Stéphane Arnouts; Daniel Devost

doi:10.1117/12.787670

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9 July 2008 Solving the three cross-talk flavors on WIRCam and its HAWAII-2RG detectors

Loïc Albert, Marc Baril, Jeff Ward, Stéphane Arnouts, Daniel Devost

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Proceedings Volume 7014, Ground-based and Airborne Instrumentation for Astronomy II; 70142K (2008) https://doi.org/10.1117/12.787670
Event: SPIE Astronomical Telescopes + Instrumentation, 2008, Marseille, France

Abstract

The Wide field Infrared Camera (WIRCam) is one of the 3 workhorse instruments in operation at CFHT. It's mosaic of four HAWAII-2RG is read using two SDSU-III controllers with 32-amplifiers in parallel per detector. First-light images showed that WIRCam suffered from three flavors of cross-talk: the "positive", "negative" and "edge" cross-talks. All have now been eliminated at the source and WIRCam is now cross-talk free. Two of these cross-talks originated from the controller electronic and one, the "edge" cross-talk, is intimately linked to the HAWAII-2RG detector and its description may be of a broader interest for other instruments using these detectors. We present the three cross-talk flavors and the hardware or software solutions implemented to eliminate them.

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Loïc Albert, Marc Baril, Jeff Ward, Stéphane Arnouts, and Daniel Devost "Solving the three cross-talk flavors on WIRCam and its HAWAII-2RG detectors", Proc. SPIE 7014, Ground-based and Airborne Instrumentation for Astronomy II, 70142K (9 July 2008); https://doi.org/10.1117/12.787670

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