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Robust diffraction-limited near-infrared-to-near-ultraviolet wide-field imaging from stratospheric balloon-borne platforms-Super-pressure Balloon-borne Imaging Telescope performance. | LitMetric

AI Article Synopsis

  • Scientific balloon platforms, like SUPERBIT, operate above 99.7% of the Earth's atmosphere, providing an effective and cost-efficient alternative to traditional orbital missions for observing space.
  • SUPERBIT is a 0.5 m telescope that achieves exceptional imaging across the near-infrared to near-ultraviolet wavelengths, utilizing advanced stabilization technology for precise tracking and stability during observations.
  • The telescope's successful performance during its 2019 flight demonstrated its capability to meet and exceed the scientific needs for various studies in cosmology, astrophysics, and stellar dynamics.

Article 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 1σ 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.

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Source
http://dx.doi.org/10.1063/1.5139711DOI Listing

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