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14 July 2010 'Imaka: a one-degree high-resolution imager for the Canada-France-Hawaii Telescope
Mark R. Chun, Raymond G. Carlberg, Harvey B. Richer, Yannick Mellier, Pierre Astier, Olivier Lai, Derrick A. Salmon, Jean-Charles Cuillandre, David Andersen, John Pazder, Jean-Pierre Véran, Gregory A. Barrick, Steven Bauman, Kevin K. Ho, Remy Avila, Richard W. Wilson, Timothy Butterley
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Proceedings Volume 7735, Ground-based and Airborne Instrumentation for Astronomy III; 77350I (2010) https://doi.org/10.1117/12.857570
Event: SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, California, United States
Abstract
The 'Imaka project is a high-resolution wide-field imager proposed for the Canada-France-Hawaii telescope (CFHT) on Mauna Kea. 'Imaka takes advantage of two features of the optical turbulence above Mauna Kea: weak optical turbulence in the free-atmosphere and boundary layer turbulence which is highly confined within a surface layer tens of meters thick and or the telescope enclosures. The combination of the two allows a groundlayer adaptive optics system (GLAO) to routinely deliver an extremely-wide corrected field of view of one-degree at an excellent free-atmosphere seeing limit at visible wavelengths. In addition, populating the focal-plane with orthogonal-transfer CCDs provides a second level of image improvement on the free-atmosphere seeing and the residual GLAO correction. The impact of such an instrument covers a broad range of science and is a natural progression of CFHT's wide-field expertise.
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Mark R. Chun, Raymond G. Carlberg, Harvey B. Richer, Yannick Mellier, Pierre Astier, Olivier Lai, Derrick A. Salmon, Jean-Charles Cuillandre, David Andersen, John Pazder, Jean-Pierre Véran, Gregory A. Barrick, Steven Bauman, Kevin K. Ho, Remy Avila, Richard W. Wilson, and Timothy Butterley "'Imaka: a one-degree high-resolution imager for the Canada-France-Hawaii Telescope", Proc. SPIE 7735, Ground-based and Airborne Instrumentation for Astronomy III, 77350I (14 July 2010); https://doi.org/10.1117/12.857570
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KEYWORDS
Stars
Telescopes
Galactic astronomy
Image quality
Mirrors
Optical turbulence
Optical design
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