Keck adaptive optics: control subsystem

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Adaptive optics on the Keck 10 meter telescope will provide an unprecedented level of capability in high resolution ground based astronomical imaging. The system is designed to provide near diffraction limited imaging performance with Strehl {gt} 0.3 n median Keck seeing of r0 = 25 cm, T =10 msec at 500 nm wavelength. The system will be equipped with a 20 watt sodium laser guide star to provide nearly full sky coverage. The wavefront control subsystem is responsible for wavefront sensing and the control of the tip-tilt and deformable mirrors which actively correct atmospheric turbulence. The spatial sampling interval for ... continued below

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6 p.

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Brase, J.M.; An, J. & Avicola, K. March 8, 1996.

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Description

Adaptive optics on the Keck 10 meter telescope will provide an unprecedented level of capability in high resolution ground based astronomical imaging. The system is designed to provide near diffraction limited imaging performance with Strehl {gt} 0.3 n median Keck seeing of r0 = 25 cm, T =10 msec at 500 nm wavelength. The system will be equipped with a 20 watt sodium laser guide star to provide nearly full sky coverage. The wavefront control subsystem is responsible for wavefront sensing and the control of the tip-tilt and deformable mirrors which actively correct atmospheric turbulence. The spatial sampling interval for the wavefront sensor and deformable mirror is de=0.56 m which gives us 349 actuators and 244 subapertures. This paper summarizes the wavefront control system and discusses particular issues in designing a wavefront controller for the Keck telescope.

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6 p.

Notes

OSTI as DE96010828

Source

  • Society of Photo-Optical Instrumentation Engineer (SPIE) summer topical meeting on adaptive optics, Maui, HI (United States), 8-12 Jul 1996

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  • Other: DE96010828
  • Report No.: UCRL-JC--123778
  • Report No.: CONF-9607112--4
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 243351
  • Archival Resource Key: ark:/67531/metadc668905

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • March 8, 1996

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  • June 29, 2015, 9:42 p.m.

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  • June 24, 2016, 6:21 p.m.

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Brase, J.M.; An, J. & Avicola, K. Keck adaptive optics: control subsystem, article, March 8, 1996; California. (digital.library.unt.edu/ark:/67531/metadc668905/: accessed November 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.