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Proceedings Paper

CFHT-WIRCam: interlaced science and guiding readout with the Hawaii-2RG IR sensor
Author(s): Marc R. Baril; Jeff Ward; Douglas Teeple; Greg Barrick; Loic Albert; Martin Riopel; Shiang-Yu Wang
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Paper Abstract

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.

Paper Details

Date Published: 28 June 2006
PDF: 9 pages
Proc. SPIE 6269, Ground-based and Airborne Instrumentation for Astronomy, 62690Z (28 June 2006); doi: 10.1117/12.672113
Show Author Affiliations
Marc R. Baril, Canada-France-Hawaii Telescope (United States)
Jeff Ward, Canada-France-Hawaii Telescope (United States)
Douglas Teeple, Canada-France-Hawaii Telescope (United States)
Greg Barrick, Canada-France-Hawaii Telescope (United States)
Loic Albert, Canada-France-Hawaii Telescope (United States)
Martin Riopel, Univ. du Québec à Montréal (Canada)
Shiang-Yu Wang, Institute for Astronomy and Astrophysics, National Taiwan Univ. (Taiwan)


Published in SPIE Proceedings Vol. 6269:
Ground-based and Airborne Instrumentation for Astronomy
Ian S. McLean; Masanori Iye, Editor(s)

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