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|Abstract:||At a fraction of the total cost of an equivalent orbital mission, scientific balloon-borne platforms, operating above 99.7% of the Earth's atmosphere, offer attractive, competitive, and effective observational capabilities-namely, space-like seeing, transmission, and backgrounds-which are well suited for modern astronomy and cosmology. The Super-pressure Balloon-borne Imaging Telescope (SUPERBIT) is a diffraction-limited, wide-field, 0.5 m telescope capable of exploiting these observing conditions in order to provide exquisite imaging throughout the near-infrared to near-ultraviolet. It utilizes a robust active stabilization system that has consistently demonstrated a 48 mas 1 sigma sky-fixed pointing stability over multiple 1 h observations at float. This is achieved by actively tracking compound pendulations via a three-axis gimballed platform, which provides sky-fixed telescope stability at < 500 mas and corrects for field rotation, while employing high-bandwidth tip/tilt optics to remove residual disturbances across the science imaging focal plane. SUPERBIT's performance during the 2019 commissioning flight benefited from a customized high-fidelity science-capable telescope designed with an exceptional thermo- and opto-mechanical stability as well as a tightly constrained static and dynamic coupling between high-rate sensors and telescope optics. At the currently demonstrated level of flight performance, SUPERBIT capabilities now surpass the science requirements for a wide variety of experiments in cosmology, astrophysics, and stellar dynamics. Published under license by AIP Publishing.|
|Electronic Publication Date:||Mar-2020|
|Citation:||Romualdez, LJ, Benton, SJ, Brown, AM, Clark, P, Damaren, CJ, Eifler, T, Fraisse, AA, Galloway, MN, Gill, A, Hartley, JW, Holder, B, Huff, EM, Jauzac, M, Jones, WC, Lagattuta, D, Leung, JSY, Li, L, Luu, TVT, Massey, RJ, McCleary, J, Mullaney, J, Nagy, JM, Netterfield, CB, Redmond, S, Rhodes, JD, Schmoll, J, Shaaban, MM, Sirks, E, Tam, SI. (2020). Robust diffraction-limited near-infrared-to-near-ultraviolet wide-field imaging from stratospheric balloon-borne platforms-Super-pressure Balloon-borne Imaging Telescope performance. REVIEW OF SCIENTIFIC INSTRUMENTS, 91 (3), 10.1063/1.5139711|
|Type of Material:||Journal Article|
|Journal/Proceeding Title:||REVIEW OF SCIENTIFIC INSTRUMENTS|
|Version:||Final published version. Article is made available in OAR by the publisher's permission or policy.|
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