Stabilization of Astronomic Images Using a Controlled Flat Mirror
A prototype of a key element of adaptive-optics systems — a controlled flat mirror used to correct light beam tilts — was designed. An algorithm for correcting atmospheric distortions of low-intensity light waves and real-time software were developed. In laboratory experiments, a value of 100 Hz was achieved for the bandwidth of a closed-loop system. The efficiency of the developed software was confirmed by daytime observations of stars.
Keywordsadaptive-optics system atmospheric turbulence wavefront least-squares method PD controller
Unable to display preview. Download preview PDF.
- 1.O. I. Shanin, Adaptive Optics Systems for Tilt Correction. Resonant Adaptive Optics (Tekhnosfera, Moscow, 2013) [in Russian].Google Scholar
- 2.J. Watson, “Tip-Tilt Correction for Astronomical Telescopes using Adaptive Control,” in Proc. of the Wescon Integrated Circuit Expo 1997, Santa Clara, USA, 1997. http://www.osti.gov/ scitech/biblio/647009.Google Scholar
- 3.Optics in Motion LLC. http://www.opticsinmotion.net/index.html.Google Scholar
- 4.M. Hart, S. J. D. Hope, J. Nagy, et al., “Quantitative Measurements of Daytime Near Infrared Sky Brightness at the AEOS 3.6 m Telescope,” in Proc. of the AMOS Surveillance Technologies Conf., Maui, USA, 2014. http://amostech.com/TechnicalPapers/2014/Poster/HART.pdf.Google Scholar
- 5.S. Jefferies, M. Hart, D. Hope, N. Murphy, “Daylight Operation of a Sodium Laser Guide Star for Wave Front Sensing,” in Proc. of the AMOS Surveillance Technologies Conf., Maui, USA, 2016. http://amostech.com/TechnicalPapers/2016/Adaptive-Optics Imaging/Jefferies.pdf.Google Scholar
- 7.D. M. Lyakhov, “Optimal Arrangement of Actuators for Square Mirrors with Free Edges,” Avtometriya 52 (1), 70–78 (2016) [Optoelectron., Instrum. Data Process. 52 (1), 57–64 (2016)].Google Scholar
- 8.V. V. Fedorov, Theory of Optimal Experiment (Nauka, Moscow, 1971) [in Russian].Google Scholar
- 9.A. A. Tokovinin, Lectures in Adaptive Optics. http://www.ctio.noao. edu/~atokovin/tutorial/.Google Scholar
- 10.V. A. Besekerskii and E. P. Popov, Theory of Automatic Control Systems (Nauka, Moscow, 1971) [in Russian].Google Scholar
- 11.M. R. Whiteley, J. S. Gibson, “Adaptive Laser Compensation for Aero-Optics and Atmospheric Disturbances,” in Proc. of the 38th Plasmadynamics and Lasers Conf., Florida, USA, 2007. DOI: 10.2514/6.2007-4012. https://arc.aiaa.org/doi/pdf/10.2514/6.2007-4012.Google Scholar
- 12.G4 Technology Co., Ltd. http://g4.com.tw/web/file/product/demo/740-Prosilica GE DataSheet 680 en.pdf.Google Scholar
- 13.“Lasers and Laser Systems. Methods for Measuring the Parameters of Laser Beams. Stability of Beam Position (GOST R ISO 11670-2010) (Standardinform, Moscow, 2011) [in Russian].Google Scholar