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Relevant bibliographies by topics / Coronagraphie

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Academic literature on the topic 'Coronagraphie'

Author: Grafiati

Published: 7 July 2024

Last updated: 31 July 2025

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Journal articles on the topic "Coronagraphie"

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Yudaev, Andrey, Alexander Kiselev, Inna Shashkova, Alexander Tavrov, Alexander Lipatov, and Oleg Korablev. "Wavefront Sensing by a Common-Path Interferometer for Wavefront Correction in Phase and Amplitude by a Liquid Crystal Spatial Light Modulator Aiming the Exoplanet Direct Imaging." Photonics 10, no. 3 (2023): 320. http://dx.doi.org/10.3390/photonics10030320.

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We implemented the common-path achromatic interfero-coronagraph both for the wavefront sensing and the on-axis image component suppression, aiming for the stellar coronagraphy. A common-path achromatic interfero-coronagraph has its optical scheme based on a nulling rotational-shear interferometer. The angle of rotational shear can be chosen at a small angular extent of about 10 deg. Such a small angular shear maintains the coronagraphic contrast degradation known as the stellar leakage effect, caused by a finite stellar size. We study the phase and amplitude wavefront control by a liquid cryst

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Leboulleux, Lucie, Alexis Carlotti, and Mamadou N’Diaye. "Redundant apodization for direct imaging of exoplanets." Astronomy & Astrophysics 659 (March 2022): A143. http://dx.doi.org/10.1051/0004-6361/202142410.

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Context. Direct imaging and spectroscopy of Earth-like planets and young Jupiters require contrast values up to 106−1010 at angular separations of a few dozen milliarcseconds. To achieve this goal, one of the most promising approaches consists of using large segmented primary mirror telescopes with coronagraphic instruments. While they are able to reach high contrast at small angular separations, coronagraphs are highly sensitive to wavefront errors, however. The segmentation itself is responsible for phasing errors and segment-level vibrations that have to be controlled at a subnanometric acc

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Tokunaga, A. T., C. Ftaclas, J. R. Kuhn, and P. Baudoz. "High Dynamic Range and the Search for Planets." Symposium - International Astronomical Union 211 (2003): 487–96. http://dx.doi.org/10.1017/s0074180900211200.

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General arguments for optimized coronagraphy in the search for planets are presented. First, off-axis telescopes provide the best telescopic platforms for use with coronagraphy, and telescope fabrication technology now allows the fabrication of such telescopes with diameters of up to 6.5 m. We show that in certain circumstances a smaller telescope with an off-axis primary has a signal-to-noise advantage compared with larger Cassegrain telescopes. Second, to fully exploit the advantages of the coronagraph for suppressing stray light, it is necessary to use a high Strehl ratio adaptive optics sy

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Itoh, Satoshi, та Taro Matsuo. "A Coronagraph with a Sub-λ/D Inner Working Angle and a Moderate Spectral Bandwidth". Astronomical Journal 163, № 6 (2022): 279. http://dx.doi.org/10.3847/1538-3881/ac658a.

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Abstract Future high-contrast imaging spectroscopy with a large segmented telescope will be able to detect atmospheric molecules of Earth-like planets around G- or K-type main-sequence stars. Increasing the number of target planets will require a coronagraph with a small inner working angle (IWA), and wide spectral bandwidth is required if we enhance a variety of detectable atmospheric molecules. To satisfy these requirements, in this paper, we present a coronagraphic system that provides an IWA less than 1λ 0/D over a moderate wavelength band, where λ 0 is the design-center wavelength and D d

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Xin, Yinzi, Laurent Pueyo, Romain Laugier, et al. "Coronagraphic Data Post-processing Using Projections on Instrumental Modes." Astrophysical Journal 963, no. 2 (2024): 96. http://dx.doi.org/10.3847/1538-4357/ad1879.

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Abstract Directly observing exoplanets with coronagraphs is impeded by the presence of speckles from aberrations in the optical path, which can be mitigated in hardware with wave front control, as well as in post-processing. This work explores using an instrument model in post-processing to separate astrophysical signals from residual aberrations in coronagraphic data. The effect of wave front error (WFE) on the coronagraphic intensity consists of a linear contribution and a quadratic contribution. When either of the terms is much larger than the other, the instrument response can be approxima

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Leboulleux, Lucie, Jean-François Sauvage, Rémi Soummer, et al. "Experimental validation of coronagraphic focal-plane wavefront sensing for future segmented space telescopes." Astronomy & Astrophysics 639 (July 2020): A70. http://dx.doi.org/10.1051/0004-6361/202037658.

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Context. Direct imaging of Earth-like planets from space requires dedicated observatories, combining large segmented apertures with instruments and techniques such as coronagraphs, wavefront sensors, and wavefront control in order to reach the high contrast of 1010 that is required. The complexity of these systems would be increased by the segmentation of the primary mirror, which allows for the larger diameters necessary to image Earth-like planets but also introduces specific patterns in the image due to the pupil shape and segmentation and making high-contrast imaging more challenging. Amon

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Vigan, A., M. N’Diaye, K. Dohlen, et al. "Calibration of quasi-static aberrations in exoplanet direct-imaging instruments with a Zernike phase-mask sensor." Astronomy & Astrophysics 629 (August 26, 2019): A11. http://dx.doi.org/10.1051/0004-6361/201935889.

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Second-generation exoplanet imagers using extreme adaptive optics (ExAO) and coronagraphy have demonstrated their great potential for studying close circumstellar environments and for detecting new companions and helping to understand their physical properties. However, at very small angular separation, their performance in contrast is limited by several factors: diffraction by the complex telescope pupil (central obscuration and spiders) not perfectly canceled by the coronagraph, residual dynamic wavefront errors, chromatic wavefront errors, and wavefront errors resulting from noncommon path

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Song, Tengfei, Yu Liu, Xuefei Zhang, et al. "Toward Automated Coronal Observations: A New Integrated System Based on the Lijiang 10 cm Coronagraph." Universe 11, no. 5 (2025): 154. https://doi.org/10.3390/universe11050154.

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About ten years ago, we established the first coronagraph that has been continuously operating on the high plateau of western China. This coronagraph is an internal occulting, 10 cm aperture instrument, installed at Lijiang Station through a collaboration with the Norikura Station of the National Astronomical Observatory of Japan. To ensure high efficiency in current and future coronal observations, developing integrated observation systems is essential for reliable, autonomous, and remote operation of coronagraphs. This paper introduces an advanced integrated observation and control system, b

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Cagigas, Miguel A., Manuel P. Cagigal, Pedro J. Valle, Vidal F. Canales, Antonio Fuentes, and Roberto López. "Planetary system detection by estimating the covariance of coronagraphic lucky images." Monthly Notices of the Royal Astronomical Society 488, no. 3 (2019): 3262–67. http://dx.doi.org/10.1093/mnras/stz1954.

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ABSTRACT In this paper, we review two different methods to increase image contrast and propose the combination of both to detect faint companions surrounding a host star. Coronagraphy allows us to block light coming from the host star so that the residual star light can be reduced by several orders of magnitude. On the other hand, estimating the Covariance of Lucky Images (COELI) is a proven method to detect faint companions from ground-based telescope images. The dynamic range of the detection camera limits this technique. Hence, the application of COELI to coronagraphic images may increase t

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Clampin, Mark, John Krist, David R. Ardila, David A. Golimowski, Holland C. Ford, and Garth Illingworth. "ACS Coronagraphic Observations of Optically Thin Debris Disks." Symposium - International Astronomical Union 221 (2004): 449–57. http://dx.doi.org/10.1017/s0074180900241892.

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The Advanced Camera for Surveys (ACS) offers a coronagraphic imaging mode with angular resolution of 0.026″pixel−1. In combination with with the appropriate subtraction of reference star point spread functions (PSF) the coronagraph is capable of achieving contrast ratios of ∼1000. We present some of the first ACS observations of the optically thin debris disk HD141569A and discuss new results from these observations.

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Dissertations / Theses on the topic "Coronagraphie"

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SCHMITTE, RIVEZ ANNICK. "Interets du doppler des membres inferieurs avant coronagraphie." Reims, 1992. http://www.theses.fr/1992REIMM067.

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Alagao, Mary Angelie. "Characterization and optimization of the Evanescent Wave Coronagraph." Electronic Thesis or Diss., Saint-Etienne, 2023. http://www.theses.fr/2023STET0060.

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L’imagerie directe des exoplanètes reste difficile en raison du contraste élevé et de la faible séparation angulaire entre l'étoile et la planète. Cela nécessite de supprimer l'éblouissement dû à l'étoile et de s'assurer que la lumière faible de la planète n'est pas noyée au milieu de divers bruits. La détection dépend de la maturité des techniques et des algorithmes utilisés, tout en tenant compte des compromis importants sur le contraste brut, la résolution angulaire et la transmission. L'une de ses composantes clés est l'utilisation de coronagraphes - des instruments ayant pour seul but de

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Chipman, Russell A. "Challenges in coronagraph optical design." SPIE-INT SOC OPTICAL ENGINEERING, 2017. http://hdl.handle.net/10150/627190.

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The point spread function (PSF) for astronomical telescopes and instruments depends not only on geometric aberrations and scalar wave diffraction, but also on the apodization and wavefront errors introduced by coatings on reflecting and transmitting surfaces within the optical system. Geometrical ray tracing provides incomplete image simulations for exoplanet coronagraphs with the goal of resolving planets with a brightness less than 10<^>-9 of their star located within 3 Airy disk radii. The Polaris-M polarization analysis program calculates uncorrected coating polarization aberrations couple

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Xin, Yeyuan(Yeyuan Yinzi). "Coronagraphic data post-processing using projections on instrumental modes." Thesis, Massachusetts Institute of Technology, 2020. https://hdl.handle.net/1721.1/127114.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Aeronautics and Astronautics, May, 2020<br>Cataloged from the official PDF of thesis.<br>Includes bibliographical references (pages 71-76).<br>High contrast astronomy has yielded the direct observations of over a dozen exoplanets and a multitude of brown dwarfs and circumstellar disks. Despite advances in coronagraphy and wavefront control, high contrast observations are still plagued by residual wavefront aberrations. Post-processing techniques can provide an additional boost in separating residual aberrations from an astrophy

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Pueyo, Laurent, Neil Zimmerman, Matthew Bolcar, et al. "The LUVOIR architecture ``A'' coronagraph instrument." SPIE-INT SOC OPTICAL ENGINEERING, 2017. http://hdl.handle.net/10150/626292.

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In preparation for the Astro 2020 Decadal Survey NASA has commissioned the study four flagship missions spanning to a wide range of observable wavelengths: the Origins Space Telescope (OST, formerly the Far-Infrared Surveyor), Lynx (formerly the X-ray Surveyor), the Large UV/Optical/Infrared Surveyor (LUVOIR) and the Habitable Exoplanet Imager (HabEx). One of the key scientific objectives of the latter two is the detection and characterization of the earth-like planets around nearby stars using the direct imaging technique (along with a broad range of investigations regarding the architecture

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Thompson, Samantha Jayne. "OSCA, an Optimised Stellar Coronagraph for Adaptive optics." Thesis, University College London (University of London), 2005. http://discovery.ucl.ac.uk/1338360/.

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Described here is the design, manufacturing, testing and commissioning of a coronagraph facility for the 4.2 metre William Herschel Telescope (WHT) and its adaptive optics system (NAOMI). The use of the NAOMI adaptive optics system gives an improved image resolution of ~ 0.15 arcseconds at a wavelength of 2.2μm. This enables the Optimised Stellar Coronagraph for Adaptive optics (OSCA) to null stellar light with smaller occulting masks and thus allows regions closer to bright astronomical objects to be imaged. OSCA is a fully deployable instrument which when in use leaves the focus of the NAOMI

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Chipman, Russell A. "Image formation in coronagraphs due to mirror polarization aberrations." SPIE-INT SOC OPTICAL ENGINEERING, 2017. http://hdl.handle.net/10150/627180.

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The PSF for astronomical telescopes and instruments depends not only on geometric wavefront aberrations, but also on those polarization aberrations from the polarization properties of reflecting and transmitting surfaces. The image plane irradiance distribution is the linear superposition of four PSF images: one for each of the two orthogonal polarizations and one for each of two cross-coupled polarization terms.

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Mawet, D., P. Wizinowich, R. Dekany, et al. "Keck Planet Imager and Characterizer: concept and phased implementation." SPIE-INT SOC OPTICAL ENGINEERING, 2016. http://hdl.handle.net/10150/622026.

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The Keck Planet Imager and Characterizer (KPIC) is a cost-effective upgrade path to the W.M. Keck observatory (WMKO) adaptive optics (AO) system, building on the lessons learned from first and second-generation extreme AO (ExA0) coronagraphs. KPIC will explore new scientific niches in exoplanet science, while maturing critical technologies and systems for future ground-based (TMT, FELT, GMT) and space-based planet imagers (HabEx, LUVOIR). The advent of fast low-noise IR cameras (IR-APD, MKIDS, electron injectors), the rapid maturing of efficient wavefront sensing (WFS) techniques (Pyramid, Zer

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Knight, Justin M., John Brewer, Ryan Hamilton, Olivier Guyon, Thomas D. Milster, and Karen Ward. "Design, fabrication, and testing of stellar coronagraphs for exoplanet imaging." SPIE-INT SOC OPTICAL ENGINEERING, 2017. http://hdl.handle.net/10150/627078.

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Complex-mask coronagraphs destructively interfere unwanted starlight with itself to enable direct imaging of exoplanets. This is accomplished using a focal plane mask (FPM); a FPM can be a simple occulter mask, or in the case of a complex-mask, is a multi-zoned device designed to phase-shift starlight over multiple wavelengths to create a deep achromatic null in the stellar point spread function. Creating these masks requires microfabrication techniques, yet many such methods remain largely unexplored in this context. We explore methods of fabrication of complex FPMs for a Phased-Induced Ampli

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Martinache, Frantz, Nemanja Jovanovic, and Olivier Guyon. "Subaru Coronagraphic eXtreme Adaptive Optics: on-sky performance of the asymmetric pupil Fourier wavefront sensor." SPIE-INT SOC OPTICAL ENGINEERING, 2016. http://hdl.handle.net/10150/622025.

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The Subaru Coronagraphic Extreme Adaptive Optics (SCExAO) instrument relies on a technique known as the asymmetric pupil Fourier wavefront sensor (APF-WFS) to compensate for the non-common path error that affects the performance of high contrast imaging instruments. The APF-WFS is a powerful tool that senses the wavefront at the level of the science detector, and leads to unbiased wavefront estimates. This paper presents the latest status, linearity properties and reports on the on-sky performance of this sensor, as it is implemented on SCExAO, used to control low-order Zernike modes in a clos

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Books on the topic "Coronagraphie"

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Calif.) Coronagraph Workshop (2006 Pasadena. Coronagraph workshop 2006: Coronagraph Workshop papers : 28-29 September, 2006, Pasadena, CA. Jet Propulsion Laboratory, California Institute of Technology, 2006.

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United States. National Aeronautics and Space Administration., ed. [Coronagraphic observations and analyses of the ultraviolet solar corona. National Aeronautics and Space Administration, 1994.

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United States. National Aeronautics and Space Administration., ed. [Coronagraphic observations and analyses of the ultraviolet solar corona. National Aeronautics and Space Administration, 1994.

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Mazereau, Pascal. A la poursuite du soleil: La construction du coronographe d'amateur. Eyrolles, 1985.

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Workshop, National Solar Observatory/Sacramento Peak Summer. Infrared tools for solar astrophysics: What's next? : proceeedings of the fifteenth National Solar Observatory/Sacramento Peak Summer Workshop, Sunspot, New Mexico, USA, 19-22 September 1994. World Scientific, 1995.

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Shaklan, Stuart B. Techniques and instrumentation for detection of exoplanets V: 23-24 August 2011, San Diego, California, United States. SPIE, 2011.

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Soummer, R. Astronomy with high contrast imaging II: Instrumentation for coronagraphy and nulling interferometry, Nice, France, October 6-10, 2003. EDP Sciences, 2004.

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Society of Photo-optical Instrumentation Engineers, ed. Techniques and instrumentation for detection of exoplanets III: 28-30 August 2007, San Diego, California, USA. SPIE, 2007.

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United States. National Aeronautics and Space Administration, ed. Spacelab Lyman alpha-white light coronagraph program: Final report for the period 12 March 1980 through 1 October 1983. National Aeronautics and Space Administration, 1986.

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United States. National Aeronautics and Space Administration., ed. Spacelab Lyman alpha-white light coronagraph program: Final report for the period 12 March 1980 through 1 October 1983. National Aeronautics and Space Administration, 1986.

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Book chapters on the topic "Coronagraphie"

1

Rouan, Daniel. "Coronagraphy." In Encyclopedia of Astrobiology. Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-44185-5_356.

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Rouan, Daniel. "Coronagraphy." In Encyclopedia of Astrobiology. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-11274-4_356.

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Rouan, Daniel. "Coronagraphy." In Encyclopedia of Astrobiology. Springer Berlin Heidelberg, 2023. http://dx.doi.org/10.1007/978-3-662-65093-6_356.

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Rouan, Daniel. "Coronagraphy." In Encyclopedia of Astrobiology. Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-27833-4_356-2.

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Noci, G., J. L. Kohl, M. C. E. Huber, et al. "The Ultraviolet Coronagraph Spectrometer." In Lecture Notes in Physics. Springer Berlin Heidelberg, 1995. http://dx.doi.org/10.1007/3-540-59109-5_56.

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Boccaletti, Anthony, Jean-Charles Augereau, Gaël Chauvin, et al. "Lyot Coronagraphy at the Palomar and Phase-Mask Coronagraphy at the VLT." In Science with Adaptive Optics. Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/10828557_4.

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Rabbia, Yves, Pierre Baudoz, and Jean Gay. "Achromatic Interfero-Coronagraphy and VLT." In Scientific Drivers for ESO Future VLT/VLTI Instrumentation. Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/978-3-662-43215-0_44.

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Gay, J., Y. Rabbia, and C. Manghini. "Interfero-Coronagraphy Using Pupil π-Rotation." In Infrared Space Interferometry: Astrophysics & the Study of Earth-Like Planets. Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-011-5468-0_25.

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Fisher, R. R., and M. Guhathakurta. "SPARTAN 201 White Light Coronagraph Experiment." In Mass Supply and Flows in the Solar Corona. Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-0930-7_45.

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Brueckner, G. E., R. A. Howard, M. J. Koomen, et al. "The Large Angle Spectroscopic Coronagraph (LASCO)." In The SOHO Mission. Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-009-0191-9_10.

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Conference papers on the topic "Coronagraphie"

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Por, Emiel H., Laurent Pueyo, Rémi Soummer, Ruslan Belikov, Padrip Gatkine, and Raphaël Pourcelot. "A hybrid coronagraphic approach using photonic integrated circuits and bulk optic coronagraphs." In Space Telescopes and Instrumentation 2024: Optical, Infrared, and Millimeter Wave, edited by Laura E. Coyle, Marshall D. Perrin, and Shuji Matsuura. SPIE, 2024. http://dx.doi.org/10.1117/12.3020690.

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Sun, Lirong, Lauren Schatz, Nathan Episcopo, et al. "Coronographs for Laser-Guide Star Adaptive Optics at the Starfire Optical Range." In Optical Interference Coatings. Optica Publishing Group, 2025. https://doi.org/10.1364/oic.2025.tha.7.

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We present the fabrication and characterization of coronographs for testbed evaluation at the Air Force Research Laboratory Starfire Optical Range. These coronagraphs represent photolithographically patterned fused silica substrates with anti-reflection, reflective, and absorptive multilayer coatings.

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Deshler, Nico, Itay Ozer, Amit Ashok, and Saikat Guha. "Experimental Demonstration of a Quantum-Optimal Direct Imaging Coronagraph." In Computational Optical Sensing and Imaging. Optica Publishing Group, 2024. http://dx.doi.org/10.1364/cosi.2024.cf1b.3.

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We implement a direct imaging coronagraph that rejects all light from an on-axis star using a double-pass spatial mode sorter. Our experimental setup can precisely localize exoplanets below the diffraction limit at 1000:1 star-planet contrast.

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Potier, Axel, Audrey T. Baur, Liurong Lin, Ruben Tandon, and Jonas G. Kuhn. "Active coronagraphy and coherence differential imaging in unpolarized light with the Swiss Wideband Active Testbed for Coronagraphic High-contrast imaging (SWATCHi) 2.0 (Conference Presentation)." In Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation VI, edited by Ramón Navarro and Ralf Jedamzik. SPIE, 2024. http://dx.doi.org/10.1117/12.3018281.

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Ftaclas, Christ, Edward T. Siebert, and Richard J. Terrile. "A High Efficiency Coronagraph for Astronomical Applications." In Space Optics for Astrophysics and Earth and Planetary Remote Sensing. Optica Publishing Group, 1988. http://dx.doi.org/10.1364/soa.1988.wa5.

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Direct detection of extra-solar planetary systems is one of a class of astronomical problems requiring a significant reduction of diffracted light within a few arcseconds of a bright point source. Traditional approaches to diffraction reduction control have included pupil plane apodization, which extracts enormous penalties in effective collecting area to obtain small angle performance, and coronagraphs, in which high efficiency requires extensive occultation of the central source giving up a valuable portion of the field of view. We have developed a hybrid, high efficiency, coronagraph which

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Watson, Steven M., and James P. Mills. "Incorporating coronographs with segmented telescopic systems for extrasolar planetary imaging." In OSA Annual Meeting. Optica Publishing Group, 1989. http://dx.doi.org/10.1364/oam.1989.wv2.

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Detection of nonsolar planets is a challenging problem. Due to the planets' faintness relative to the star, it is necessary to suppress the stellar diffracted energy to very low levels. In addition, the planets' proximity to the star requires large diameter optics. This research examines various multiaperture and segmented telescopic systems incorporating Lyot coronagraphs to suppress the stellar diffracted energy and provide the required resolution so that the extrasolar planets can be directly imaged. Because of the phasing tolerances and required contrast ratios, the IR band of 10.5-13.5 µm

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Orban de Xivry, Gilles, Olivier Absil, Elsa Huby, and AÃ¯ssa Jolivet. "Post-coronagraphic PSF sharpening with the vortex coronagraph." In Adaptive Optics for Extremely Large Telescopes 5. Instituto de Astrofísica de Canarias (IAC), 2017. http://dx.doi.org/10.26698/ao4elt5.0066.

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Cady, Eric, Camilo Mejia Prada, Xin An, et al. "Laboratory performance of the shaped pupil coronagraphic architecture for the WFIRST/AFTA coronagraph." In SPIE Optical Engineering + Applications, edited by Stuart Shaklan. SPIE, 2015. http://dx.doi.org/10.1117/12.2189113.

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Kasdin, N. Jeremy, Robert J. Vanderbei, Michael G. Littman, Michael Carr, and David N. Spergel. "The shaped pupil coronagraph for planet finding coronagraphy: optimization, sensitivity, and laboratory testing." In SPIE Astronomical Telescopes + Instrumentation, edited by John C. Mather. SPIE, 2004. http://dx.doi.org/10.1117/12.552273.

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Blind, Nicolas, Bruno Chazelas, Jonas Kühn та ін. "RISTRETTO: coronagraph and AO designs enabling High Dispersion Coronagraphy at 2 λ/D". У Adaptive Optics Systems VIII, редактори Dirk Schmidt, Laura Schreiber та Elise Vernet. SPIE, 2022. http://dx.doi.org/10.1117/12.2628320.

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Reports on the topic "Coronagraphie"

1

Altrock, Richard C. Ground-Based Coronagraphic Observations of Solar Streamers. Defense Technical Information Center, 1992. http://dx.doi.org/10.21236/ada267259.

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Kim, Iraida S. Mirror Coronagraphic Device - Development and Manufacture of a Reflecting Coronagraphic Device for Application in a Low-Scattered Light Telescope. Defense Technical Information Center, 1997. http://dx.doi.org/10.21236/ada327249.

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Karovska, Margarita. Enhancement of Lasco C1, C2, and C3 Coronagraph Images. Defense Technical Information Center, 1999. http://dx.doi.org/10.21236/ada359690.

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Karpen, Judith T. A Search for Precursor Activity Associated with Coronal Mass Ejections, Using White-Light Coronagraph Observations Obtained with the SOLWIND Instrument on Board the Air Force P78-1 Satellite. Defense Technical Information Center, 1985. http://dx.doi.org/10.21236/ada170139.

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