Keck adaptive optics: control subsystem
- Lawrence Livermore National Lab., CA (United States); and others
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.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States); Keck Foundation (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 243351
- Report Number(s):
- UCRL-JC-123778; CONF-9607112-4; ON: DE96010828
- Resource Relation:
- Conference: Society of Photo-Optical Instrumentation Engineer (SPIE) summer topical meeting on adaptive optics, Maui, HI (United States), 8-12 Jul 1996; Other Information: PBD: 8 Mar 1996
- Country of Publication:
- United States
- Language:
- English
Similar Records
Issues in the design and optimization of adaptive optics and laser guide stars for the Keck Telescopes
Wavefront control system for the Keck telescope