Performance Of Laser Guide Star Adaptive Optics At Lick Observatory
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| Author | : N. Ageorges |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 362 |
| Release | : 2013-04-17 |
| Genre | : Science |
| ISBN | : 9401596247 |
Adaptive optics allows the theoretical limit of angular resolution to be achieved from a large telescope, despite the presence of turbulence. Thus an eight meter class telescope, such as one of the four in the Very Large Telescope operated by ESO in Chile, will in future be routinely capable of an angular resolution of almost 0.01 arcsec, compared tot he present resolution of about 0.5 arcsec for conventional imaging in good condition. All the world's major telescopes either have adaptive optics or are in the process of building AO systems. It turns out that a reasonable fraction of the sky can be observed using adaptive optics, with moderately good imaging quality, provided imaging in done in the near IR. To move out of the near IR, with its relatively poor angular resolution, astronomers need a laser guide star. There is a layer of Na atoms at approximately 90 km altitude that can be excited by a laser to produce such a source, or Rayleigh scattering can be employed lower in the atmosphere. But the production and use of laser guide stars is not trivial, and the key issues determining their successful implementation are discussed here, including the physics of the Na atom, the cone effect, tilt determination, sky coverage, and numerous potential astronomical applications.
| Author | : John W. Hardy |
| Publisher | : Oxford Optical and Imaging Sci |
| Total Pages | : 452 |
| Release | : 1998 |
| Genre | : Science |
| ISBN | : 9780195090192 |
This book by one of the leaders in adaptive optics covers the fundamental theory and then describes in detail how this technology can be applied to large ground-based telescopes to compensate for the effects of atmospheric turbulence. It includes information on basic adaptive optics components and technology, and has chapters devoted to atmospheric turbulence, optical image structure, laser beacons, and overall system design. The chapter on system design is particularly detailed and includes performance estimation and optimization. Combining a clear discussion of physical principles with numerous real-world examples, this book will be a valuable resource for all graduate students and researchers in astronomy and optics.
| Author | : Michael S. Tarov |
| Publisher | : Nova Publishers |
| Total Pages | : 136 |
| Release | : 2002 |
| Genre | : Science |
| ISBN | : 9781590334133 |
Adaptive optics is a field which is coming into its own with new discoveries occurring almost daily both in astronomy and in applications of AO in applied fields. In an adaptive optics system, the output from a wavefront sensor is used to calculate corrections that actively remove distortions from an image. The applications of adaptive optics in vision science have received considerable impetus from the knowledge developed by astronomers about how to correct images using AO technology. It is expected that developments in adaptive optics will radically change the face of astronomy in the 21st century. These systems will largely overcome the main limitation of ground-based telescopes, namely the severe reduction in image quality caused by turbulence in the Earth's atmosphere. Intended for use at near infrared wavelengths, adaptive optics allow imaging and spectroscopy at the limit of resolution imposed by optical diffraction an advance in astronomer's ability to view the heavens unparalleled since the invention of the telescope. AO is now also entering clinical medicine in the field of ophthalmology and other related fields. This new book presents several hundred current abstracts in the field, each fully indexed, for ease of access and contains a CD ROM for further research.
| Author | : François Roddier |
| Publisher | : Cambridge University Press |
| Total Pages | : 421 |
| Release | : 1999-06-17 |
| Genre | : Science |
| ISBN | : 052155375X |
Adaptive optics is set to revolutionise the future of astronomy; this is the first book on the subject and is set to become the standard reference.
| Author | : Robert Tyson |
| Publisher | : CRC Press |
| Total Pages | : 310 |
| Release | : 2010-09-14 |
| Genre | : Science |
| ISBN | : 1439808597 |
Since the publication of the second edition of Principles of Adaptive Optics, the developments and applications in this area have increased tremendously. Observatories are now producing outstanding science through adaptive optics technology; components, such as micromachined deformable mirrors and very low noise detectors, are revolutionizing the f
| Author | : |
| Publisher | : |
| Total Pages | : 548 |
| Release | : 1995 |
| Genre | : Aeronautics |
| ISBN | : |
| Author | : Robert K. Tyson |
| Publisher | : CRC Press |
| Total Pages | : 356 |
| Release | : 2022-02-28 |
| Genre | : Technology & Engineering |
| ISBN | : 1000531341 |
Principles of Adaptive Optics describes the foundations, principles, and applications of adaptive optics (AO) and its enabling technologies. This leading textbook addresses the fundamentals of AO at the core of astronomy, high-energy lasers, biomedical imaging, and optical communications. Key Features: Numerous examples to explain and support the underlying principles Hundreds of new references to support the topics that are addressed End-of-chapter questions and exercises A complete system design example threaded through each chapter as new material is introduced
| Author | : |
| Publisher | : |
| Total Pages | : 782 |
| Release | : 1995 |
| Genre | : Power resources |
| ISBN | : |
| Author | : Optical Society of America |
| Publisher | : |
| Total Pages | : 564 |
| Release | : 1996 |
| Genre | : Astronomical instruments |
| ISBN | : |
| Author | : Hamid Hemmati |
| Publisher | : John Wiley & Sons |
| Total Pages | : 683 |
| Release | : 2006-06-05 |
| Genre | : Technology & Engineering |
| ISBN | : 0470042400 |
A quarter century of research into deep space and near Earth optical communications This book captures a quarter century of research and development in deep space optical communications from the Jet Propulsion Laboratory (JPL). Additionally, it presents findings from other optical communications research groups from around the world for a full perspective. Readers are brought up to date with the latest developments in optical communications technology, as well as the state of the art in component and subsystem technologies, fundamental limitations, and approaches to develop and fully exploit new technologies. The book explores the unique requirements and technologies for deep space optical communications, including: * Technology overview; link and system design drivers * Atmospheric transmission, propagation, and reception issues * Flight and ground terminal architecture and subsystems * Future prospects and applications, including navigational tracking and light science This is the first book to specifically address deep space optical communications. With an increasing demand for data from planetary spacecraft and other sources, it is essential reading for all optical communications, telecommunications, and system engineers, as well as technical managers in the aerospace industry. It is also recommended for graduate students interested in deep space communications.
