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Laser and Natural Guide Star Measured Turbulent Wavefront Correlation 激光与自然导星测量湍流波前相关
Adaptive Optics Pub Date : 1900-01-01 DOI: 10.1364/adop.1995.fa1
R. Deron, Sylvain Laurent, M. Séchaud, G. Rousset
{"title":"Laser and Natural Guide Star Measured Turbulent Wavefront Correlation","authors":"R. Deron, Sylvain Laurent, M. Séchaud, G. Rousset","doi":"10.1364/adop.1995.fa1","DOIUrl":"https://doi.org/10.1364/adop.1995.fa1","url":null,"abstract":"The laser guide star concept was proposed for the application of adaptive optics in astronomy in order to overcome the problem of natural star requisite brightness which significantly limits the sky coverage [1, 2]. Recently, the adaptive optics compensation of turbulent wavefront using laser guide star has been demonstrated [3,4].","PeriodicalId":256393,"journal":{"name":"Adaptive Optics","volume":"38 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120973616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Optimization of Bimorph Mirror Electrode Pattern for SUBARU AO System SUBARU AO系统双晶片反射电极模式优化
Adaptive Optics Pub Date : 1900-01-01 DOI: 10.1364/adop.1996.athc.13
M. Otsubo, H. Takami, M. Iye
{"title":"Optimization of Bimorph Mirror Electrode Pattern for SUBARU AO System","authors":"M. Otsubo, H. Takami, M. Iye","doi":"10.1364/adop.1996.athc.13","DOIUrl":"https://doi.org/10.1364/adop.1996.athc.13","url":null,"abstract":"NAOJ has been developing an adaptive optics(AO) system for SUBARU 8.2m telescope. The AO system is composed of a curvature wavefront sensor and a bimorph mirror with 36 elements.","PeriodicalId":256393,"journal":{"name":"Adaptive Optics","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122686949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
ADAPTIVE OPTICS LONG EXPOSURE POINT SPREAD FUNCTION RETRIEVAL FROM WAVEFRONT SENSOR MEASUREMENTS: TESTS ON REAL DATA 自适应光学长曝光点扩展函数从波前传感器测量检索:对实际数据的测试
Adaptive Optics Pub Date : 1900-01-01 DOI: 10.1364/adop.1996.awd.3
J. Véran, F. Rigault, H. Maître
{"title":"ADAPTIVE OPTICS LONG EXPOSURE POINT SPREAD FUNCTION RETRIEVAL FROM WAVEFRONT SENSOR MEASUREMENTS: TESTS ON REAL DATA","authors":"J. Véran, F. Rigault, H. Maître","doi":"10.1364/adop.1996.awd.3","DOIUrl":"https://doi.org/10.1364/adop.1996.awd.3","url":null,"abstract":"Current astronomical adaptive optics (AO) systems are not able to fully correct the atmospheric turbulence. As a result, the quality of the AO long exposure images is degraded by a residual blur which significantly reduces the contrast of the fine details [1]. Removing this residual blur is the field of image restoration (deconvolution) and since this problem is general to many imaging applications, many different methods have already been developed. To achieve an accurate restoration however, an accurate estimation of the system Point Spread Function (PSF) is usually required. For adaptive optics imaging, the shape of the PSF depends on how well the deformable mirror is able to compensate for the wavefront distortions. This “degree of correction” in turn depends on the size and magnitude of the object used as a reference for wavefront sensing, but also on the characteristics of the turbulence, which is known to be a non-stationary process. As a results, the AO PSF is highly variable [2]. The usual way around this problem involves dedicating of significant portion of the observing time to the sole acquisition of a point source, from which the current PSF is estimated.","PeriodicalId":256393,"journal":{"name":"Adaptive Optics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127011081","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Spatial Spikes of Intensity of the Atmospherically–distorted Images 大气畸变图像强度的空间尖峰
Adaptive Optics Pub Date : 1900-01-01 DOI: 10.1364/adop.1996.awd.11
I. Lukin
{"title":"Spatial Spikes of Intensity of the Atmospherically–distorted Images","authors":"I. Lukin","doi":"10.1364/adop.1996.awd.11","DOIUrl":"https://doi.org/10.1364/adop.1996.awd.11","url":null,"abstract":"At registration of astronomical objects through the turbulent atmosphere for large telescopes conditions will be usually realized, when the astronomical image represents from self a chaotic picture interleaved light and dark spots (speckle-strusture). In this connection, it is represented interesting to give an estimation of size of characteristic parameters of these areas. In given message the similar analysis will be carried out on the basis of treatment light spots of speckle-structure as the random spikes of intensity of the astronomical image.","PeriodicalId":256393,"journal":{"name":"Adaptive Optics","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121772508","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Experimental Results of a Low-Order Adaptive Optics Experiment on the Starfire 3.5m Telescope 星火3.5m望远镜低阶自适应光学实验结果
Adaptive Optics Pub Date : 1900-01-01 DOI: 10.1364/adop.1995.fa5
J. Gonglewski, D. Dayton, S. Sandven, D. Laughlin, S. Rogers, S. McDermott, S. Browne, Robert D. Babnick, Joe Rae, J. Gallegos, R. Highland
{"title":"Experimental Results of a Low-Order Adaptive Optics Experiment on the Starfire 3.5m Telescope","authors":"J. Gonglewski, D. Dayton, S. Sandven, D. Laughlin, S. Rogers, S. McDermott, S. Browne, Robert D. Babnick, Joe Rae, J. Gallegos, R. Highland","doi":"10.1364/adop.1995.fa5","DOIUrl":"https://doi.org/10.1364/adop.1995.fa5","url":null,"abstract":"An experiment with a nasmyth adaptive optics system mounted on the SOR 3.5m telescope is described. The 183 actuator mirror allows only partial compensation in the near IR, and the imagery is enhanced by postprocessing methods. We describe the system design, and evaluate the performance based on long-to-short exposure SNR ratio metrics.","PeriodicalId":256393,"journal":{"name":"Adaptive Optics","volume":"180 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132932897","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Liquid Crystal Spatial Modulators with Segmented Mirror for Adaptive Optics. 用于自适应光学的分段反射镜液晶空间调制器。
Adaptive Optics Pub Date : 1900-01-01 DOI: 10.1364/adop.1996.athc.21
V. V. Reznichenko, Vladislav V. Nicitin, A. Onokhov, Michail V. Isaev, Natalia L.Ivanova, L. Beresnev, W. Haase
{"title":"Liquid Crystal Spatial Modulators with Segmented Mirror for Adaptive Optics.","authors":"V. V. Reznichenko, Vladislav V. Nicitin, A. Onokhov, Michail V. Isaev, Natalia L.Ivanova, L. Beresnev, W. Haase","doi":"10.1364/adop.1996.athc.21","DOIUrl":"https://doi.org/10.1364/adop.1996.athc.21","url":null,"abstract":"We have developed efficient optically controlled liquid-crystal optically addressed spatial light modulators that possess modulation parameters for reflected light.","PeriodicalId":256393,"journal":{"name":"Adaptive Optics","volume":"285 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133534243","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Adaptive Optics Servo-system Performance Estimator: practical implementation 自适应光学伺服系统性能评估器:实际实现
Adaptive Optics Pub Date : 1900-01-01 DOI: 10.1364/adop.1996.athc.28
É. Prieto, D. Bonaccini, H. Geoffray, P. Prado, L. Demailly
{"title":"Adaptive Optics Servo-system Performance Estimator: practical implementation","authors":"É. Prieto, D. Bonaccini, H. Geoffray, P. Prado, L. Demailly","doi":"10.1364/adop.1996.athc.28","DOIUrl":"https://doi.org/10.1364/adop.1996.athc.28","url":null,"abstract":"The evaluation of the quality parameters of the adaptive correction and their evolution with time is important while your adaptive optics system is running. It allows to give an observer a precise feeling of what he will get in the integrated image, it allows the operator to keep an eye on the system performance, and it allows the implementation of adaptive filtering techniques to the servo control laws. These reason have driven us to implement such a tool on the ESO Adonis system. To know the image quality parameters the only possibilities are to directly look at the science image or from the wavefront sensor residuals. Our purpose is to report on our attempts to evaluate the long exposure Strehl ratio and FWHM of the corrected PSF, by using the residual slopes given by the Wave Front Sensor (for us a Shark-Hartmann). We have used the following relation to compute the long exposure strehl1:","PeriodicalId":256393,"journal":{"name":"Adaptive Optics","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131797423","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Tip-Tilt Correction at the Anglo-Australian Telescope 英澳望远镜的倾斜校正
Adaptive Optics Pub Date : 1900-01-01 DOI: 10.1364/adop.1995.tua54
J. Bryant, J. O'Byrne, R. Minard, P. Fekete, L. Cram
{"title":"Tip-Tilt Correction at the Anglo-Australian Telescope","authors":"J. Bryant, J. O'Byrne, R. Minard, P. Fekete, L. Cram","doi":"10.1364/adop.1995.tua54","DOIUrl":"https://doi.org/10.1364/adop.1995.tua54","url":null,"abstract":"The first stage of the AAT adaptive optics program, allowing tip-tilt correction for images and spectroscopy in the near infrared has recently been implemented.","PeriodicalId":256393,"journal":{"name":"Adaptive Optics","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134186444","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Liquid Crystals for Adaptive Optics 液晶自适应光学
Adaptive Optics Pub Date : 1900-01-01 DOI: 10.1364/adop.1995.tua47
S. Restaino, R. Carreras, G. Love
{"title":"Liquid Crystals for Adaptive Optics","authors":"S. Restaino, R. Carreras, G. Love","doi":"10.1364/adop.1995.tua47","DOIUrl":"https://doi.org/10.1364/adop.1995.tua47","url":null,"abstract":"Adaptive optics components have been used for almost twenty years without major modifications of the basic hardware. Problems connected with cost, power consumption and reliability have pushed several groups to start, investigating the possibility of using different technologies. Of the many technologies under investigation two, in our opinion, demonstrate a high possibility of being an alternative to conventional adaptive mirrors. They are liquid crystal spatial light modulators and and micro-machined mirrors. The USAF Phillips Laboratory, is investigating both these technologies, however here we report, on the results of the liquid crystal work, which has a slightly longer history and more maturity.","PeriodicalId":256393,"journal":{"name":"Adaptive Optics","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114371222","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Linear Spatio-Temporal Prediction for Adaptive Optics Wavefront Reconstructors 自适应光学波前重构器的线性时空预测
Adaptive Optics Pub Date : 1900-01-01 DOI: 10.1364/adop.1995.tua7
M. Lloyd-Hart
{"title":"Linear Spatio-Temporal Prediction for Adaptive Optics Wavefront Reconstructors","authors":"M. Lloyd-Hart","doi":"10.1364/adop.1995.tua7","DOIUrl":"https://doi.org/10.1364/adop.1995.tua7","url":null,"abstract":"Detailed computer simulations have been performed to evaluate the potential for spatio-temporal prediction of wavefront slope data from a Shack-Hartmann sensor to improve the imaging quality of an astronomical adaptive optics system by overcoming the effect of the inherent delay between sensing and correcting the wavefront phase error. Results of the simulations show that an improvement of a factor of at least 2 in the residual mean-square phase error can be achieved by extrapolating into the future on the basis of past wavefront measurements. Experiments will be conducted very shortly with actual data gathered at a 1.6 m telescope using a Shack-Hartmann sensor with 31-cm subapertures to test the simulations. Both the simulations and the experimental arrangement have been chosen to match closely the measured operating conditions of the adaptive optics system under construction for the 6.5 m MMT (Martin & Anderson 1995).","PeriodicalId":256393,"journal":{"name":"Adaptive Optics","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115836618","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 19
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