Dr. Mats Löfdahl Profile

Dr. Mats Löfdahl

Researcher at Stockholm Univ

SPIE Involvement:

Author

Publications (12)

Proceedings Article | 28 July 2010 Paper

Wavefront sensing and wavefront reconstruction for the 4m European Solar Telescope EST

Thomas Berkefeld, Dirk Soltau, Dario del Moro, Mats Löfdahl

Proceedings Volume 7736, 77362J (2010) https://doi.org/10.1117/12.857580

KEYWORDS: Adaptive optics, Turbulence, Stars, Actuators, Wavefront reconstruction, Wavefront sensors, Solar telescopes, Space telescopes, Telescopes, Computer simulations

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Proceedings Article | 28 July 2010 Paper

Adaptive optics and MCAO for the 4-m European Solar Telescope EST

D. Soltau, T. Berkefeld, J. Sánchez Capuchino, M. Collados Vera, D. Del Moro, M. Löfdahl, G. Scharmer

Proceedings Volume 7736, 77360U (2010) https://doi.org/10.1117/12.856851

KEYWORDS: Mirrors, Adaptive optics, Telescopes, Solar telescopes, Actuators, Deformable mirrors, Optical instrument design, Wavefront sensors, Control systems, Atmospheric optics

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Proceedings Article | 11 February 2003 Paper

Adaptive optics system for the new Swedish solar telescope

Goran Scharmer, Peter Dettori, Mats Lofdahl, Mark Shand

Proceedings Volume 4853, (2003) https://doi.org/10.1117/12.460387

KEYWORDS: Mirrors, Adaptive optics, Electrodes, Charge-coupled devices, Solar telescopes, Wavefront sensors, Digital signal processing, Telescopes, Wavefronts, Computing systems

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Proceedings Article | 11 February 2003 Paper

Diverse-phase speckle inversion applied to data from the Swedish 1-meter solar telescope

Mats Lofdahl, Goran Scharmer

Proceedings Volume 4853, (2003) https://doi.org/10.1117/12.460285

KEYWORDS: Wavefronts, Adaptive optics, Speckle, Solar telescopes, Image restoration, Telescopes, Signal to noise ratio, Lanthanum, Wavefront sensors, Point spread functions

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Proceedings Article | 23 December 2002 Paper

Multiframe blind deconvolution with linear equality constraints

Mats Lofdahl

Proceedings Volume 4792, (2002) https://doi.org/10.1117/12.451791

KEYWORDS: Wavefronts, Data modeling, Deconvolution, Matrices, Point spread functions, Wavefront sensors, Image processing, Sensors, Speckle, Polarization

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SPIE Journal Paper | 1 June 2001

Algorithm for resolving 2pi ambiguities in interferometric measurements by use of multiple wavelengths

Mats Lofdahl, Henrik Eriksson

OE, Vol. 40, Issue 06, (June 2001) https://doi.org/10.1117/12.10.1117/1.1365936

KEYWORDS: Interferometry, Chemical elements, Telescopes, Optical engineering, Wavefront sensors, Space telescopes, Mirrors, Error analysis, Wavefronts, Optical filters

Proceedings Article | 28 July 2000 Paper

Resolving piston ambiguities when phasing a segmented mirror

Mats Lofdahl, Henrik Eriksson

Proceedings Volume 4013, (2000) https://doi.org/10.1117/12.394013

KEYWORDS: Wavefront sensors, Segmented mirrors, Phase measurement, Chemical elements, Infrared telescopes, Aerospace engineering, Observatories, Mirrors, Telescopes, Interferometry

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Proceedings Article | 28 July 2000 Paper

Predictor approach to closed-loop phase-diversity wavefront sensing

Mats Lofdahl, Goran Scharmer

Proceedings Volume 4013, (2000) https://doi.org/10.1117/12.394009

KEYWORDS: Wavefronts, Monochromatic aberrations, Error analysis, Wavefront sensors, Space telescopes, Optical transfer functions, Diffraction, Segmented mirrors, Image segmentation, Telescopes

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Proceedings Article | 7 July 2000 Paper

Workstation-based solar/stellar adaptive optics system

Goran Scharmer, Mark Shand, Mats Lofdahl, Peter Dettori, Wang Wei

Proceedings Volume 4007, (2000) https://doi.org/10.1117/12.390291

KEYWORDS: Adaptive optics, Electrodes, Digital signal processing, Wavefronts, Mirrors, Wavefront sensors, Calibration, Control systems, Field programmable gate arrays, Charge-coupled devices

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Proceedings Article | 11 September 1998 Paper

Fast phase diversity wavefront sensing for mirror control

Mats Lofdahl, Alan Duncan, Goran Scharmer

Proceedings Volume 3353, (1998) https://doi.org/10.1117/12.321703

KEYWORDS: Wavefronts, Wavefront sensors, Data modeling, Monochromatic aberrations, Adaptive optics, Sensors, Computer simulations, Telescopes, Error analysis, Mirrors

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Proceedings Article | 28 August 1998 Paper

Phase diversity experiment to measure piston misalignment on the segmented primary mirror of the Keck II Telescope

Mats Lofdahl, Rick Kendrick, Alex Harwit, Keith Mitchell, Alan Duncan, John Seldin, Richard Paxman, D. Scott Acton

Proceedings Volume 3356, (1998) https://doi.org/10.1117/12.324519

KEYWORDS: Wavefronts, Image segmentation, Telescopes, Error analysis, Space telescopes, Turbulence, Mirrors, Sensors, Cameras, Data modeling

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Proceedings Article | 30 September 1994 Paper

Application of phase-diversity to solar images

Mats Lofdahl, Goran Scharmer

Proceedings Volume 2302, (1994) https://doi.org/10.1117/12.188043

KEYWORDS: Wavefronts, Telescopes, Image restoration, Monochromatic aberrations, Fourier transforms, Image quality, Solar telescopes, Lanthanum, Error analysis, Apodization

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Showing 5 of 12 publications

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