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Active optics strategy for the alignment and operation of the European Solar Telescope
Astronomical Telescopes + Instrumentation, 2022The European Solar Telescope (EST) is an on-axis 4.2-meter solar telescope, the largest solar telescope ever built in Europe. While operating, environmental effects, such as gravity, wind buffeting or thermal loads, will generate wavefront errors that ...
M. Belío-Asín +8 more
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Optical Activity of Biopolymers [PDF]
Nature, 1969 Theoretical and experimental advances have led to a reassessment of the interpretation of optical rotatory dispersion and circular dichroism of nucleic acids, proteins and related compounds. The present state of the field is reviewed in this article.
Walter Gratzer, David Cowburn
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Rubin Observatory active optics system status
Astronomical Telescopes + Instrumentation, 2020The Vera C. Rubin Observatory is now under construction on Cerro Pachon in Chile. This ground-based facility is designed to conduct the Legacy Survey of Space and Time (LSST), which is a decade-long time-domain optical survey of the night sky. The system
Sandrine Thomas +8 more
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Are Lignins Optically Active? [PDF]
Journal of Agricultural and Food Chemistry, 1999 The accepted derivation of lignins from non(enzymatically)-controlled radical coupling reactions has been recently challenged, and it is relevant to ascertain unequivocally whether lignins are or are not (as normally assumed) optically active. Two approaches were used. First, DFRC (derivatization followed by reductive cleavage) dimers derived from beta-
Junpeng Peng +4 more
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Active Optics for Space Telescopes
Optical Design and Fabrication 2019 (Freeform, OFT), 2019Active optics has been proposed for application to space telescopes since the mid 1960s since it can help to relax manufacturing tolerances while guaranteeing diffraction-limited image quality, correct for thermal gradients and any errors due to launch ...
N. Devaney
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, 2020
. The free-vibration modes of an annular mirror (FVMAM), derived from the thin plate theory and reflecting the intrinsic characteristics of the physical phenomenon of resonance, have been applied to compensate the aberrations of the active optics system.
Hairen Wang +5 more
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. The free-vibration modes of an annular mirror (FVMAM), derived from the thin plate theory and reflecting the intrinsic characteristics of the physical phenomenon of resonance, have been applied to compensate the aberrations of the active optics system.
Hairen Wang +5 more
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Optical activity and evolution
Journal of Theoretical Biology, 1980It is noted that the chemical reactions occurring in rarefied cosmic clouds (molecular concentration less than or approximately to 10(2) cm-3) differ from similar laboratory reactions by the much greater effect on the outcome of external force fields.
M. M. Khasanov, G. P. Gladyshev
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Development of space active optics for a whiffletree supported mirror.
Applied Optics, 2019The requirements of a lightweight primary mirror for large-aperture space telescopes include a precise mirror figure and high reliability. However, lightweight mirrors are easily affected by environmental disturbances, as they lack structural stability ...
Pingwei Zhou +3 more
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Kirkpatrick-Baez active optics system at FERMI: system performance analysis.
Journal of Synchrotron Radiation, 2019FERMI is the first and only seeded EUV-SXR free-electron laser (FEL) facility available to users; it operates at Elettra - Sincrotrone Trieste (Italy) and it presents five operating endstations.
L. Raimondi +7 more
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The optical activity of polypeptides
Biopolymers, 1983AbstractThe present status of the theory of the optical properties of polypeptides is discussed in a general way. Arguments are presented that indicate that the interaction of exciton bands in helices will occur in a tensorial way with the parallel polarized bands normally having stronger interactions than the perpendicular polarized bands, with only ...
Wayne J. Becktel, John A. Schellman
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