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Most Sensitive Astronomical Camera Developed

By R&D Editors | October 1, 2009

Most Sensitive Astronomical Camera Developed 

world's most sensitive astronomical camera
Electric signals used to pilot the imagery chip of the world’s most sensitive astronomical camera are 500 times more precise than those of a conventional controller.

A team of researchers has developed the world’s most sensitive astronomical camera. The camera is made up of a CCD controller for counting photons; a digital imagery device that amplifies photons observed by astronomical cameras or by other instruments used in situations of very low luminosity. The controller produces 25 gigabytes of data per second.

Electric signals used to pilot the imagery chip are 500 times more precise than those of a conventional controller. This increased precision helps reduce noise that interferes with the weak signals coming from astronomical objects in the night sky. The controller allows a substantial increase in the sensitivity of detectors, which can be compared to the mirror of the Mont-Mégantic telescope doubling its diameter.

“The first astronomical results are astounding and highlight the increased sensitivity acquired by the new controller,” says Université de Montréal physics Ph.D. student Olivier Daigle, who led the research. “The clarity of the images brings us so much closer to the stars that we are attempting to understand.”

Photon etc., a young Quebec research and development company that specializes in the manufacturing of photonic measurement and analysis instruments, developed a commercial version of the controller devised by Daigle and his team and integrated it in complete cameras. The Mont-Mégantic Observatory and NASA were the first to place an order for one of these cameras and were soon followed by a research group from the University of Sao Paulo, and by a European-Canadian consortium equipping a telescope in Chili. In addition, researchers in nuclear medicine, bioluminescence, Raman imaging and other fields requiring rapid imagery have expressed interest in purchasing the cameras.

“The sensitivity of the cameras developed by the Centre de recherche en astrophysique du Québec (CRAQ) and Photon etc. will not only help us better understand the depths of the universe but also better perceive weak optical signals coming from the human body. These signals can reveal the early signs of several diseases such as macular degeneration and certain types of cancer. An early diagnostic leads to early intervention, hopefully before the disease becomes more serious, thus saving lives and important costs,” says Sébastien Blais-Ouellette, president of Photon etc.

Scientific results for the camera were recently featured in the Publications of the Astronomical Society of the Pacific, an instrumentation journal.

The research was made possible thanks to the financial support of the Natural Sciences And Engineering Research Council of Canada, Photon etc., the Canada Foundation for Innovation, the Fonds québécois de la recherche sur la nature et les technologies.

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