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Emerging adaptive optics facility at Large Binocular Telescope Observatory

Date Issued
2024
Author(s)
Ragland, Sam
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Brusa, Guido
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Cavallaro, Alessandro
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Choi, Heejoo
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Guerra, Juan Carlos
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Herbst, Tom
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Lefebvre, Michael
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Miller, Douglas
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Power, Jennifer
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Shields, Joseph
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Smithwright, Mark
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Taylor, Gregory
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Veillet, Christian
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Zhang, Xianyu
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Biasi, Roberto
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Conrad, Al
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Close, Laird
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Gallieni, Daniele
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Mechtley, Brandon
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Peretz, Eliad
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Bec, Matthieu
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Bertram, Thomas
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Briegel, Florian
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Hill, John
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Kim, Daewook
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Radhakrishnan, Kalyan
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DOI
Abstract
The Large Binocular Telescope (LBT) Observatory pioneered Adaptive Optics (AO) technologies such as Adaptive Secondary Mirror (ASM), Pyramid wavefront sensor, and Ground-layer AO using Rayleigh lasers at 8 to 10m class telescopes. We have initiated an effort to turn LBT AO into a facility-class capability. The effort involves (1) building an AO team with AO development capability, (2) improving the robustness of the AO, (3) developing in-house AO expertise to maintain and troubleshoot the AO systems, (4) automating processes for efficient on-sky operation, (5) tracking performance metrics and cultivating accountability for on-sky AO performance, and (6) minimizing the operational risks for the ASMs. We present the status of these developments. LBTO continues its efforts to develop innovative technology. We explore the next phase of AO developments, including Agile Extreme Adaptive Optics (AgXAO) on the DX side of the LINC-NIRVANA optical bench to overcome the limitation imposed by varying and large atmospheric seeing at Mount Graham. AgXAO implementation includes the development of (1) a high-order, high-sensitivity wavefront sensor, (2) a high-density deformable mirror with 3000 actuators and next-generation ASM with about 950 actuators, (3) active optics integration, (4) vibration and wavefront piston control, (5) atmospheric turbulence measurements and weather forecast integration, and (6) a visible camera and an AO-corrected narrow-field fiber-coupled IFU spectrograph using one of the existing workhorse visible spectrographs. Developing AgXAO on the SX side, too, would enable Fizeau imaging in the visible wavelengths. AgXAO will also serve as a general-purpose high-contrast (and subsequently a Fizeau imaging) Testbed on LBT to test advanced wavefront control algorithms, including astrophotonics experiments, and machine learning algorithms with minimal impact on routine science operations. We propose developing AgXAO through student projects to train the next-generation scientists and engineers for the extremely large telescope (ELT) era. The ultimate goal is to push large aperture ground-based telescopes to their performance limits and make them competitive with space telescopes in terms of PSF stability and performance to enable breakthrough science....
Coverage
Adaptive Optics Systems IX
All editors
Jackson, Kathryn J.; Schmidt, Dirk; Vernet, Elise
Series
Volume
13097
Start page
130970L-1
Conferenece
Adaptive Optics Systems IX
Conferenece place
Yokohama, Japan
Conferenece date
16-22 June, 2024
Uri
Url
Issn Identifier
0277-786X
Ads BibCode
2024SPIE13097E..0LR
Rights
open.access
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