ATLAST-9.2m: a large-aperture deployable space telescope

Oegerle, W. R.; Feinberg, Lee; Purves, Lloyd; Hyde, Tupper; Thronson, H. A.; Townsend, John W.; Postman, Marc; Bolcar, Matthew R.; Budinoff, Jason; Dean, Bruce H.; Clampin, Mark; Ebbets, Dennis; Gong, Qian; Gull, Theodore R.; Howard, Joseph M.; Jones, Andrew; Lyon, Richard G.; Pasquale, Bert A.; Perrygo, Charles M.; Smith, Jeffrey S.; Thompson, Patrick L.; Woodgate, B. E.

doi:10.1117/12.857622

Cited by 13 publications

(7 citation statements)

References 4 publications

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“…One well developed concept for a LUVOIR mission was ATLAST. 45 ATLAST was based largely on extensions of JWST, and because of the similarity, results of detailed structural and optical modeling for JWST provided useful estimates of ATLAST parameters. To meet its science goals, ATLAST required wavefront stability of 0.01 nm over 10 min.…”

Section: Suitability Of Coolers For a Luvoir Missionmentioning

confidence: 99%

Detectors and cooling technology for direct spectroscopic biosignature characterization

Rauscher

Canavan

Moseley

et al. 2016

J. Astron. Telesc. Instrum. Syst

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Abstract. Direct spectroscopic biosignature characterization (hereafter "biosignature characterization") will be a major focus for future space observatories equipped with coronagraphs or starshades. Our aim in this article is to provide an introduction to potential detector and cooling technologies for biosignature characterization. We begin by reviewing the needs. These include nearly noiseless photon detection at flux levels as low as <0.001 photons s −1 pixel −1 in the visible and near-infrared. We then discuss potential areas for further testing and/or development to meet these needs using noncryogenic detectors (electron multiplying charge coupled devices, HgCdTe array, HgCdTe APD array), and cryogenic single-photon detectors (microwave kinetic inductance device arrays and transition-edge sensor microcalorimeter arrays). Noncryogenic detectors are compatible with the passive cooling that is strongly preferred by coronagraphic missions but would add nonnegligible noise. Cryogenic detectors would require active cooling, but in return, deliver nearly quantum-limited performance. Based on the flight dynamics of past NASA missions, we discuss reasonable vibration expectations for a large UV-Optical-IR space telescope (LUVOIR) and preliminary cooling concepts that could potentially fit into a vibration budget without being the largest element. We believe that a cooler that meets the stringent vibration needs of a LUVOIR is also likely to meet those of a starshade-based Habitable Exoplanet Imaging Mission. © The Authors. Published by SPIE under a Creative Commons Attribution 3.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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Section: Suitability Of Coolers For a Luvoir Missionmentioning

confidence: 99%

Detectors and cooling technology for direct spectroscopic biosignature characterization

Rauscher

Canavan

Moseley

et al. 2016

J. Astron. Telesc. Instrum. Syst

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“…The multiwave observatory ATLAST (Oegerle, 2010) demonstrates a set of concepts for missions for new generation space observatories with the diameter of the primary instrument within a range of 8-16 m, which will allow some of the most complicated obser vations to be performed and some of the most impor tant questions to be answered, including also the ques tion of "Whether we are alone in our Galaxy?" ULTRAVIOLET OBSERVATORIES OF THE FUTURE 483 3.3.…”

Section: The Theia and Atlast Projectsmentioning

confidence: 99%

Ultraviolet observatories of the future

Sachkov

2014

Sol Syst Res

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The ultraviolet spectral region is extremely important for studying astrophysical objects in a wide temperature range of 3000 to 300000 K. Over the past three decades, several tens of space experiments were conducted and space observatories were injected into orbit for observing objects in the ultra violet (UV) spec tral region. Works on next generation UV missions are now in progress in Europe, the United States, and Russia. A summary of requirements for these missions and a brief description of the main projects are pre sented.

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“…The deployment is realized by stretching the corners of each layer of the sunshield [ 5 , 6 , 7 ]. ATLAST-9.2 is a large-aperture space telescope located at LaGrange point 2 (SEL2), equipped with a flat square sunshield composed of four layers of opaque Kapton membrane, blocking light from the sun, moon, and Earth [ 8 ]. The JPL and ATK laboratories of the United States have proposed two regular polygon sunshields for cosmic expansion detectors [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

Configuration Design and Dynamic Characteristics Analysis of Spacecraft Membrane Sunshield

Tao

Lin

et al. 2022

Polymers

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To meet the needs of large space telescopes, such as light weight, high folding ratio, and low manufacturing cost, a flexible deployable regular hexagonal membrane sunshield is proposed in this paper. Firstly, the dynamic equation of the membrane plane is established by the micro-element method. Then, the response surface method is used to obtain the mathematical model of the fundamental frequency of the membrane sunshield. The factors influencing this model, such as the corner pulling force, the effective circle radius, and the edge arch height, are analyzed. By combining the formula of the fundamental frequency of the membrane sunshield and the effective area ratio of the sunshield, the multi-objective optimization function of the fundamental frequency of the membrane sunshield is obtained. A scaled-down experimental prototype of the membrane sunshield is built, and the modal test is performed on the thin membrane plane with a circular fixed boundary in the middle. Comparing the experimental results with the finite element simulation results, the mode shape and the fundamental frequency are highly consistent. This proves that the model can be used to solve the fundamental frequency of the membrane sunshield under the same boundary.

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ATLAST-9.2m: a large-aperture deployable space telescope

Cited by 13 publications

References 4 publications

Detectors and cooling technology for direct spectroscopic biosignature characterization

Detectors and cooling technology for direct spectroscopic biosignature characterization

Ultraviolet observatories of the future

Configuration Design and Dynamic Characteristics Analysis of Spacecraft Membrane Sunshield

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