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Communication Dans Un Congrès Année : 2010

'Imaka: a one-degree high-resolution imager for the Canada-France-Hawaii Telescope

Résumé

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.

Dates et versions

hal-03724471 , version 1 (15-07-2022)

Identifiants

Citer

Mark R. Chun, Ray G. Carlberg, Harvey B. Richer, Yannick Mellier, Pierre-Luc Astier, et al.. 'Imaka: a one-degree high-resolution imager for the Canada-France-Hawaii Telescope. Ground-based and Airborne Instrumentation for Astronomy III, Jun 2010, San Diego, California, United States. ⟨10.1117/12.857570⟩. ⟨hal-03724471⟩
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