Anisoplanatism in adaptive optics systems due to pupil aberrations

Bauman, Brian

doi:10.1117/12.618231

Cited by 4 publications

(1 citation statement)

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“…Extension of MCAO to three-conjugate correction or more could theoretically improve field NGS sharpening, but this increases the complexity of MCAO system optical design. Maintaining small pupil aberrations while relaying a wide field of view is difficult, particularly for large aperture telescopes [12] . The inclusion of additional DM's in series also introduces additional transmission losses and complications in the MCAO control law.…”

Section: Introductionmentioning

confidence: 99%

Sharpening of natural guide stars for low-order wavefront sensing using patrolling laser guide stars

2008

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A laser guide star (LGS) adaptive optics (AO) system generally requires additional tip/tilt information derived using a natural guide star (NGS), while multi-LGS systems will benefit from measurement of additional low-order wavefront modes using one or more NGS's. If we use AO sharpened NGS's, we can improve both the measurement accuracy and accessible sky fraction while also minimizing the observational overhead of faint NGS acquisition. Multi-object adaptive optics (MOAO) sharpening of NGS is possible where a good estimate of the NGS wavefront can be made, for example where tomographic wavefront information is available. We describe a new approach for high Strehl ratio sharpening, based on additional patrolling laser beacons, to eliminate generalized anisoplanatism and minimize tomography error in the NGS direction.

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Section: Introductionmentioning

confidence: 99%

Sharpening of natural guide stars for low-order wavefront sensing using patrolling laser guide stars

2008

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Introduction to Aberrations in Optical Imaging Systems

Sasián

2012

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The competent and intelligent optical design of today's state-of-the-art products requires an understanding of optical aberrations. This accessible book provides an excellent introduction to the wave theory of aberrations and will be valuable to graduate students in optical engineering, as well as to researchers and technicians in academia and industry interested in optical imaging systems. Using a logical structure, uniform mathematical notation and high quality figures, the author helps readers to learn the theory of optical aberrations in a modern and efficient manner. In addition to essential topics such as the aberration function, wave aberrations, ray caustics and aberration coefficients, this text covers pupil aberrations, the irradiance function, aberration fields and polarization aberrations. It also provides a historical perspective by explaining the discovery of aberrations and two chapters provide insight into classical image formation; these topics of discussion are often missing in comparable books.

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Impact of Pupil Aberrations on Wavefront Manipulation

Nobis

2021

EPJ Web Conf.

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A systematic and quantitative analysis is given of the impact of pupil aberrations on the imaging performance in wavefront manipulation applications using adaptive optical elements. For the practical case of rotationally-symmetric types of wavefront corrections, such as defocus or spherical aberration, analytical expressions of the induced aberrations are derived including their pupil and field dependence. Each aberration is thereby related to the specific pupil aberration present at the adaptive element. The results can be used to specify the acceptable amount of pupil correction required for a specific magnitude and type of wavefront manipulation.

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Anisoplanatism in adaptive optics systems due to pupil aberrations

Cited by 4 publications

References 5 publications

Sharpening of natural guide stars for low-order wavefront sensing using patrolling laser guide stars

Sharpening of natural guide stars for low-order wavefront sensing using patrolling laser guide stars

Introduction to Aberrations in Optical Imaging Systems

Impact of Pupil Aberrations on Wavefront Manipulation

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