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28 June 2006 CFHT-WIRCam: interlaced science and guiding readout with the Hawaii-2RG IR sensor
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CFHTs experience with interlacing science and guide pixel readout using the Hawaii-2RG infrared sensors on WIRCam has been problematic due to timing limitations inherent to this approach as well as unexpected behaviour in the sensors themselves. These problems have been overcome by implementing high-speed readout (1.4 s per read) for WIRCam's array of four Hawaii-2RG sensors, obviating the need for interlaced readout. The effect of the reset anomaly on the science and guide frames has been minimized by introducing suitable delays and a clocking scheme that does not significantly impact the minimum exposure time of the camera.
© (2006) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Marc R. Baril, Jeff Ward, Douglas Teeple, Greg Barrick, Loic Albert, Martin Riopel, and Shiang-Yu Wang "CFHT-WIRCam: interlaced science and guiding readout with the Hawaii-2RG IR sensor", Proc. SPIE 6269, Ground-based and Airborne Instrumentation for Astronomy, 62690Z (28 June 2006);


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