Poster + Presentation + Paper
13 December 2020 Mezzocielo: an attempt to redesign the concept of wide field telescopes
Author Affiliations +
Conference Poster
Abstract
Mezzocielo (or "half of the sky") is a concept for a new class of telescopes where a full spherical optical surface is made by filling with a liquid a structure built up with spherical lenses and almost covering an entire sphere. Lenses of the same class of existing ones can be arranged, for example like the faces of a dodecahedron, in order to build up a sphere in the 1 to 4m class in diameter. Liquid with low refractive index and high transparency are available in the electronic and cooling industry and made up devices with strong high order spherical aberrations but consistently identical over basically any direction in the sky simultaneously. An ensemble of moving correctors or a hemispherical array of the same kind of devices can feed a number of detectors lying in the range of the ten of thousands, making modern CMOS the only, today, viable solution to such a kind of futuristic facility.
Conference Presentation
© (2020) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
R. Ragazzoni, M. Dima, C. Arcidiacono, D. Magrin, S. Di Rosa, and S. Zaggia "Mezzocielo: an attempt to redesign the concept of wide field telescopes", Proc. SPIE 11445, Ground-based and Airborne Telescopes VIII, 1144534 (13 December 2020); https://doi.org/10.1117/12.2560524
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KEYWORDS
Telescopes

Astronomical telescopes

Liquids

Spherical lenses

Astronomy

Monochromatic aberrations

Refractive index

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