자료유형  

 학위논문

Control Number  

0016935105

International Standard Book Number  

9798380847698

Dewey Decimal Classification Number  

629.1

Main Entry-Personal Name  

Li, Lun.

Publication, Distribution, etc. (Imprint  

[S.l.] : Princeton University., 2023

Publication, Distribution, etc. (Imprint  

Ann Arbor : ProQuest Dissertations & Theses, 2023

Physical Description  

1 online resource(250 p.)

General Note  

Source: Dissertations Abstracts International, Volume: 85-05, Section: B.

General Note  

Advisor: Kasdin, N. Jeremy;Jones, William C.

Dissertation Note  

Thesis (Ph.D.)--Princeton University, 2023.

Restrictions on Access Note  

This item must not be sold to any third party vendors.

Summary, Etc.  

요약The evolution of cosmology and our understanding of the universe is driven by continual advancements in observational tools and techniques. This thesis investigates a key area in this evolution, focusing on the optical and mechanical optimization of balloon-borne telescopes. These unique platforms provide several competitive advantages for cosmic microwave background (CMB) studies and gravitational lensing studies, further constraining our cosmological models.Examining three distinct experiments---the Super-pressure Balloon-borne Imaging Telescope (SuperBIT), the Giga-pixel Balloon-borne Imaging Telescope (GigaBIT), and SPIDER, this thesis delves into the intricacies of optomechanical design and alignment. SuperBIT, a 0.5-m wide-field Near-Ultraviolet (NUV) imager, provides crucial insights into weak gravitational lensing effects from galaxy clusters, while GigaBIT, its larger sibling, complements space telescopes in the NUV realm. SPIDER, a balloon-borne polarimeter, targets CMB polarization.This work evaluates the scientific demand for and the unique role of balloon-borne telescopes in NUV imaging, informed by a thorough review of Hubble Space Telescope proposal cycles and instrument utilization. This thesis also elaborates on modeling techniques for estimating optical misalignment when aligning wide-field imaging telescopes. Additionally, it pioneers the use of topology optimization techniques in the design of lightweight yet robust structures vital for these airborne instruments.The results of these investigations are illuminating. It becomes evident that the optimizations laid out are not just beneficial, but critical to realizing the ambitious scientific goals of these experiments within the inherent constraints of the balloon platform. The findings underscore the crucial role of balloon-borne telescopes in furthering cosmological understanding, and in doing so, offer a robust blueprint for designing and optimizing future balloon-borne telescope systems that maximize NUV imaging quality, cost-effectiveness, and efficiency.

Subject Added Entry-Topical Term  

Aerospace engineering.

Subject Added Entry-Topical Term  

Optics.

Subject Added Entry-Topical Term  

Astrophysics.

Index Term-Uncontrolled  

Balloon-borne telescopes

Index Term-Uncontrolled  

Convolutional neural networks

Index Term-Uncontrolled  

Cosmological observations

Index Term-Uncontrolled  

High-altitude astronomy

Index Term-Uncontrolled  

Optical misalignment identification

Index Term-Uncontrolled  

Topology optimization

Added Entry-Corporate Name  

Princeton University Mechanical and Aerospace Engineering

Host Item Entry  

Dissertations Abstracts International. 85-05B.

Host Item Entry  

Dissertation Abstract International

Electronic Location and Access  

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Control Number  

joongbu:642674