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Active Optics on the Vera C. Rubin Observatory
Active Optics on the Vera C. Rubin Observatory
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202105608
- ISBN
- 9798265426857
- DDC
- 522.1
- 서명/저자
- Active Optics on the Vera C. Rubin Observatory
- 발행사항
- [Sl] : Stanford University, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 208 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-05, Section: B.
- 주기사항
- Advisor: Kahn, Steven;Pavone, Marco.
- 학위논문주기
- Thesis (Ph.D.)--Stanford University, 2025.
- 초록/해제
- 요약The Vera C. Rubin Observatory, which achieved first light on April 15, 2025, is set to revolutionize astronomy through the 10-year Legacy Survey of Space and Time (LSST), producing an unprecedented volume of observational data. Its Simonyi Survey Telescope, a wide-field optical system, relies on active optics to dynamically correct aberrations and maintain exceptional image quality. This dissertation develops and implements state-of-the-art methodologies to optimize Rubin's active optics, leading to the first on-sky demonstration of its performance. The first on-sky image, relying solely on the open-loop control improvements presented here, achieved an impressive image quality of 1.7 arcsecond. As commissioning progressed, continued refinements allowed the system to consistently deliver seeing-limited imaging, with a telescope contribution reaching as low as 0.4 arcsecond at optimal conditions, even before the system was fully operational-- an achievement reached in record time. Although further improvements are still required, these results underscore the critical role of active optics in enabling LSST's scientific discoveries.Achieving this precision required addressing critical challenges, including resolving degeneracies in the high-dimensional control space, refining open-loop corrections, implementing laser tracker-based alignment, and characterizing thermal and mirror figure effects on image quality. The commissioning efforts, using both the Commissioning Camera (ComCam) and LSSTCam-- the largest digital camera ever built--, resulted in the first optical performance assessment of the Simonyi Survey Telescope, presented here as a preliminary validation of its design specifications.Additionally, this work introduces an approach for detecting Fast Optical Bursts (FOBs)-- millisecond-long transients that have been proposed as potential counterparts to Fast Radio Bursts (FRBs). This novel method leverages machine learning and a detailed understanding of the atmospheric PSF to identify these short-lived events, laying the groundwork for real-time transient detection and advancing the prospects of multi-messenger astronomy.The methodologies developed here extend beyond Rubin, providing a framework for future active optics implementations in next-generation extremely large telescopes, such as the Giant Magellan Telescope (GMT) and the Thirty Meter Telescope (TMT). These findings will serve as a key reference for understanding the operation of the active optics system and optical performance of the Rubin Observatory, maximizing the scientific return of LSST for the broader astronomical community.
- 일반주제명
- Telescopes
- 일반주제명
- Astronomy
- 일반주제명
- Satellites
- 일반주제명
- Lasers
- 일반주제명
- Observatories
- 일반주제명
- Optics
- 일반주제명
- Engineers
- 일반주제명
- Universe
- 일반주제명
- Aerospace engineering
- 기타저자
- Stanford University.
- 기본자료저록
- Dissertations Abstracts International. 87-05B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520260202105608
■006m o d
■007cr#unu||||||||
■020 ▼a9798265426857
■035 ▼a(MiAaPQ)AAI32316361
■035 ▼a(MiAaPQ)Stanfordyv459nv3571
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a522.1
■1001 ▼aHomar, Guillem Megias.
■24510▼aActive Optics on the Vera C. Rubin Observatory
■260 ▼a[Sl]▼bStanford University▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a208 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-05, Section: B.
■500 ▼aAdvisor: Kahn, Steven;Pavone, Marco.
■5021 ▼aThesis (Ph.D.)--Stanford University, 2025.
■520 ▼aThe Vera C. Rubin Observatory, which achieved first light on April 15, 2025, is set to revolutionize astronomy through the 10-year Legacy Survey of Space and Time (LSST), producing an unprecedented volume of observational data. Its Simonyi Survey Telescope, a wide-field optical system, relies on active optics to dynamically correct aberrations and maintain exceptional image quality. This dissertation develops and implements state-of-the-art methodologies to optimize Rubin's active optics, leading to the first on-sky demonstration of its performance. The first on-sky image, relying solely on the open-loop control improvements presented here, achieved an impressive image quality of 1.7 arcsecond. As commissioning progressed, continued refinements allowed the system to consistently deliver seeing-limited imaging, with a telescope contribution reaching as low as 0.4 arcsecond at optimal conditions, even before the system was fully operational-- an achievement reached in record time. Although further improvements are still required, these results underscore the critical role of active optics in enabling LSST's scientific discoveries.Achieving this precision required addressing critical challenges, including resolving degeneracies in the high-dimensional control space, refining open-loop corrections, implementing laser tracker-based alignment, and characterizing thermal and mirror figure effects on image quality. The commissioning efforts, using both the Commissioning Camera (ComCam) and LSSTCam-- the largest digital camera ever built--, resulted in the first optical performance assessment of the Simonyi Survey Telescope, presented here as a preliminary validation of its design specifications.Additionally, this work introduces an approach for detecting Fast Optical Bursts (FOBs)-- millisecond-long transients that have been proposed as potential counterparts to Fast Radio Bursts (FRBs). This novel method leverages machine learning and a detailed understanding of the atmospheric PSF to identify these short-lived events, laying the groundwork for real-time transient detection and advancing the prospects of multi-messenger astronomy.The methodologies developed here extend beyond Rubin, providing a framework for future active optics implementations in next-generation extremely large telescopes, such as the Giant Magellan Telescope (GMT) and the Thirty Meter Telescope (TMT). These findings will serve as a key reference for understanding the operation of the active optics system and optical performance of the Rubin Observatory, maximizing the scientific return of LSST for the broader astronomical community.
■590 ▼aSchool code: 0212.
■650 4▼aTelescopes
■650 4▼aAstronomy
■650 4▼aSatellites
■650 4▼aLasers
■650 4▼aObservatories
■650 4▼aOptics
■650 4▼aEngineers
■650 4▼aUniverse
■650 4▼aAerospace engineering
■690 ▼a0752
■690 ▼a0606
■690 ▼a0538
■71020▼aStanford University.
■7730 ▼tDissertations Abstracts International▼g87-05B.
■790 ▼a0212
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17360701▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


