Limits on adaptive optics systems for lightweight space telescopes
01 Nov 1993-Proceedings of SPIE (International Society for Optics and Photonics)-Vol. 1945, pp 176-184
TL;DR: In this article, the SRT disturbances dominated by tip/tilt corrected through stiffening secondary support structure, wavefront compensation, is used to compensate for the wavefront imbalance.
Abstract: SRT disturbances dominated by tip/tilt corrected through stiffening secondary support structure...wavefront compensation.
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TL;DR: The Space Interferometry Mission (SIM-PlanetQuest) as mentioned in this paper will offer unprecedented astrometric precision that promises the discovery of Earth-class extra-solar planets as well as a wealth of important astrophysics.
Abstract: Optical interferometry will open new vistas for astronomy over the next decade. The Space Interferometry Mission (SIM-PlanetQuest), operating unfettered by the Earth's atmosphere, will offer unprecedented astrometric precision that promises the discovery of Earth-class extra-solar planets as well as a wealth of important astrophysics. Optical interferometers also present severe technological challenges: laser metrology systems must perform with sub-nanometer precision; mechanical vibrations must be controlled to nanometers requiring orders of magnitude disturbance rejection; a multitude of actuators and sensors must operate flawlessly and in concert. The Jet Propulsion Laboratory, with the support of Lockheed Martin Advanced Technology Center (LM ATC) and Northrop Grumman Space Technology (NGST), has addressed these challenges with a technology development program that is now complete. Technology transfer to the SIM flight team is now well along and the project is proceeding toward Preliminary Design Review (PDR) with a quickening pace.
35 citations
TL;DR: The International Society for Optical Engineering (ISM) as discussed by the authors has developed a development program that plans to establish technology readiness for the SIM by the end of 2004, which will open new vistas for astronomy over the next decade.
Abstract: Optical and IR interferometry wil open new vistas for astronomy over the next decade. Space based interferometers, operating unfettered by the Earth's atmosphere, will offer the greatest scientific payoff. They also present the greatest technological challenge: laser metrology systems must perform with sub-nanometer precision; mechanical vibrations must be controlled to nanometers requiring orders of magnitude disturbance rejection; a multitude of actuators and sensors must operate flawlessly in concert. The Jet Propulsion Laboratory along with its industry partners, Lockheed Martin and TRW, are addressing these challenges with a development program that plans to establish technology readiness for the SIM by the end of 2004.© (2003) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
32 citations
TL;DR: The Space Interferometry Mission (SIMM) as mentioned in this paper will offer unprecedented astrometric precision that promises the discovery of Earth-class extra-solar planets as well as a wealth of important astrophysics.
Abstract: Optical interferometry will open new vistas for astronomy over the next decade. The Space Interferometry Mission, operating unfettered by the Earth's atmosphere, will offer unprecedented astrometric precision that promises the discovery of Earth-class extra-solar planets as well as a wealth of important astrophysics. Optical interometers also present severe technological challenges: laser metrology systems must perform with sub-nanometer precision; mechanical vibrations must be controlled to nanometers requiring orders of magnitude distrubance rejection; a multitude of actuators and sensors must operate flawlessly and in concert. The Jet Propulsion Laboratory along with its industry partners, Northrop Grumman Space Technology, and Lockheed Martin, are addressing these challenges with a technology development program that is nearing completion. Emphasis is shifting from technology demonstration to technology transfer to the flight team that wil build and launch the space system.
11 citations
09 Mar 2002
TL;DR: In this paper, the authors present a development program that plans to establish technology readiness for the Space Interferometry Mission by the end of 2004 by the Jet Propulsion Laboratory along with its industry partners, Lockheed Martin and TRW.
Abstract: Optical and infrared interferometry will open new vistas for astronomy over the next decade. Space based interferometers, operating unfettered by the Earth's atmosphere, will offer the greatest scientific payoff. They also present the greatest technological challenge: laser metrology systems must perform with sub-nanometer precision; mechanical vibrations must be controlled to nanometers, requiring orders of magnitude disturbance rejection; a multitude of actuators and sensors must operate flawlessly and in concert. The Jet Propulsion Laboratory along with its industry partners, Lockheed Martin and TRW, are addressing these challenges with a development program that plans to establish technology readiness for the Space Interferometry Mission by the end of 2004.
6 citations
01 Nov 1996
TL;DR: In this article, a simulation study was conducted to explore how wavefront aberration information could be used in post-processing to improve the effective resolution of a space telescope optical transfer function (OTF).
Abstract: Due to mechanical aspects of fabrication, launch, and operational environment, space telescope optics can suffer from unforseen aberrations, detracting from their intended diffraction-limited performance goals. Presented here are the results of a simulation study designed to explore how wavefront aberration information could be used in post- processing to improve the effective resolution of such telescopes. Knowledge of the telescope pupil aberration can be effectively used in a post-processing paradigm referred to as deconvolution from wavefront sensing (DWFS). Simulation results show that even when relatively noisy wavefront sensor information is used on images experiencing up to 10% of a wave root-mean-squared (RMS) of unspecified wavefront error, the signal-to-noise ratios (SNRs) of the optical transfer function (OTF) can be increased by a factor of 1.5, and RMS OTF phasor angle errors can be approximately cut in half, across a wide range of spatial frequencies. Post-processing consisted of correction of the Fourier phase of the image spectra using information from wavefront sensing, without the use of inverse filtering or adaptive optics compensation.© (1996) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
4 citations
Cites methods from "Limits on adaptive optics systems f..."
...Similarly, post-detection [8, 9, 10, 11J and pre-detection [12, 13, 14, 15] techniques have been proposed and analyzed for the case of space-based telescope imaging....
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