Results 181 to 190 of about 2,240 (218)

Comparison of image reconstruction algorithms using adaptive optics instrumentation

SPIE Proceedings, 1998
We present preliminary results from a comparison of image estimation and recovery algorithms developed for use with advanced telescope instrumentation and adaptive optics systems. Our study will quantitatively compare the potential of these techniques to boost the resolution of imagery obtained with undersampled or low-bandwidth adaptive optics ...
David W. Tyler, Stephen D. Ford, Bobby R. Hunt, Richard G. Paxman, Michael C. Roggemann, Janet C. Rountree, Timothy J. Schulz, Kathy J. Schulze, John H. Seldin, David G. Sheppard, Bruce E. Stribling, William C. van Kampen, Byron M. Welch   +12 more
openaire   +1 more source

Faraday-effect light valve arrays for adaptive optical instruments

ICALEO '87: Proceedings of the International Conference on Optical Methods in Flow & Particle Diagnostics, 1987
The ability to adapt to a range of measurement conditions by autonomously configuring software or hardware on-line will be an important attribute of next-generation intelligent sensors. In this paper we review the characteristics of spatial light modulators (SLM) with an emphasis on potential integration into adaptive optical instruments.
E. Dan Hirleman, Paul A. Dellenback, Warren H. Stevenson   +2 more
openaire   +1 more source

Optical design for the adaptive secondary setup and instrument stimulator (ASSIST)

SPIE Proceedings, 2006
A comprehensive suite of Adaptive Optics systems and AO-assisted instruments is currently under development for the VLT and will be built around a hyperbolic convex adaptive Deformable Secondary Mirror (DSM). In telescopes with such a secondary mirror, test and calibration of both the DSM and the science instruments using it are notoriously expensive ...
Pascal Hallibert, Robin Arsenault, Bernard Delabre, Simone Esposito, Norbert Hubin, Andreas Quirrenbach, Armando Riccardi, Stefan Stroebele, Remko Stuik, Ramon Vink   +9 more
openaire   +1 more source

ELT instrument concepts: impact on telescope and adaptive optics design

SPIE Proceedings, 2006
We report on the development of instrument concepts for a European ELT, expanding on studies carried out as part of the ESO OWL concept. A range of instruments were chosen to demonstrate how an ELT could meet or approach the goals generated by the OPTICON science team, and used to push the specifications and requirements of telescope and adaptive ...
Cunningham, Colin, Atad-Ettadgui, Eli, Bacon, Roland, Brandl, Bernhard, Cuby, Jean-Gabriel, Dalton, Gavin B., Dent, William, d'Odorico, Sandro, Egan, Ian, Evans, Christopher, Hammer, François, Hubin, Norbert N., Jagourel, Pascal, Kasper, Markus E., Kerber, Florian, Lenzen, Rainer, Montilla, Iciar, Moretto, Gil, Morris, Simon L., Pasquini, Luca, Prieto, Eric, Quirrenbach, Andreas, Redfern, Michael, Ryan, Oliver, Strachan, Mel, Vérinaud, Christophe   +25 more
openaire   +1 more source

Commissioning of the adaptive optics supported LUCI instruments at the Large Binocular telescope: results

Ground-based and Airborne Instrumentation for Astronomy VII, 2018
The LUCI instruments are a pair of NIR imagers and multi-object spectrographs located at the front bent Gregorian foci of the Large Binocular Telescope (LBT). One of their special features is their diffraction-limited imaging and long-slit spectroscopic capability in combination with the LBT adaptive secondary mirrors.
Heidt, Jochen, Pramskiy, Alexander, Thompson, David, Seifert, Walter, Gredel, Roland, Miller, Doug, Taylor, Greg, ESPOSITO, Simone, PUGLISI, Alfio Timothy, PINNA, Enrico, Quirrenbach, Andreas   +10 more
openaire   +3 more sources

ABISM: an interactive image quality assessment tool for adaptive optics instruments

SPIE Proceedings, 2016
ABISM (Automatic Background Interactive Strehl Meter) is a interactive tool to evaluate the image quality of astronomical images. It works on seeing-limited point spread functions (PSF) but was developed in particular for diffraction-limited PSF produced by adaptive optics (AO) systems.
Julien H. Girard, Martin Tourneboeuf
openaire   +1 more source

MEMS devices in future astronomical telescope adaptive optics instruments

SPIE Proceedings, 2009
MEMS deformable mirrors are showing great promise for use in astronomical adaptive optics systems. Recent experiments at a Lick Observatory 1-meter telescope have demonstrated a 144 actuator device in a visible wavelength AO imager. MEMS devices with thousands of actuators could be used for high-Strehl and visible wavelength AO systems on today's ...
openaire   +1 more source

MEMS development for astronomical instrumentation at the Lick Observatory Laboratory for Adaptive Optics

SPIE Proceedings, 2007
The Lick Observatory has been a pioneer in the development of innovative technology for astronomy particularly the development of adaptive optics and laser guidestar systems. The UCO/Lick Observatory Laboratory for Adaptive Optics (LAO) is actively pursuing development of new device technologies and techniques that will enable the next generation of
openaire   +1 more source

Magnetic resonance linear accelerator technology and adaptive radiation therapy: An overview for clinicians

Ca-A Cancer Journal for Clinicians, 2022
Travis Salzillo, William Hall, Christopher Schultz   +2 more
exaly  

Adaptive optics based on machine learning: a review

Opto-Electronic Advances, 2022
Changhui Rao, Jiaying Wang, Lei Min
exaly