A 45-m telescope with a surface accuracy of 65 μm

Ukita, Nobuharu; Tsuboi, Hiroto

doi:10.1109/5.284739

Cited by 15 publications

(6 citation statements)

References 12 publications

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“…Our initial motivation was the planning of a next-generation millimeter and submillimeter telescope that could, to the greatest possible extent, inherit both the large collecting area of the Nobeyama Radio Observatory (NRO) 45-m telescope (Ukita et al 1994 1 ) and the submillimeter capabilities of Atacama Submillimeter Telescope Experiment (ASTE) 10-m telescope (Ezawa et al 2008 2 ). Through discussions with researchers in the Europe and US, as well as in East Asia, we further developed this plan, primarily by considering future necessary scientific developments and potential new discoveries that could be complemented by new single-dish telescopes.…”

Section: Introductionmentioning

confidence: 99%

New 50-m-class single-dish telescope: Large Submillimeter Telescope (LST)

et al. 2016

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We report on a plan to construct a 50-m-class single-dish telescope, the Large Submillimeter Telescope (LST). The conceptual design and key science behind the LST are presented, together with its tentative specifications. This telescope is optimized for wide-area imaging and spectroscopic surveys in the 70-420 GHz frequency range, which spans the main atmospheric windows at millimeter and submillimeter wavelengths for good observation sites such as the Atacama Large Millimeter/submillimeter Array (ALMA) site in Chile. We also target observations at higher frequencies of up to 1 THz, using an inner high-precision surface. Active surface control is required in order to correct gravitational and thermal deformations of the surface, and will be useful for correction of the wind-load deformation. The LST will facilitate new discovery spaces such as wide-field imaging with both continuum and spectral lines, along with new developments for time-domain science. Through exploitation of its synergy with ALMA and other telescopes, the LST will contribute to research on a wide range of topics in the fields of astronomy and astrophysics, e.g., astrochemistry, star formation in our Galaxy and galaxies, the evolution of galaxy clusters via the Sunyaev-Zel'dovich (SZ) effect, the search for transients such as γ-ray burst reverse shocks produced during the epoch of re-ionization, electromagnetic follow up of detected gravitational wave sources, and examination of general relativity in the vicinity of super massive black holes via submillimeter very-long-baseline interferometry (VLBI).

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Section: Introductionmentioning

confidence: 99%

New 50-m-class single-dish telescope: Large Submillimeter Telescope (LST)

et al. 2016

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“…The LST project was originally discussed as the planning of a next-generation telescope for sub/millimeterwavelengths that could inherit both the large collecting area of the Nobeyama Radio Observatory (NRO) 45-m telescope 32 and the submillimeter capabilities of Atacama Submillimeter Telescope Experiment (ASTE) 10-m telescope. 33 The current major specifications of the LST, along with the conceptual design and key science behind have been summarized in Kawabe et al (2016).…”

Section: The Large Submillimeter Telescopementioning

confidence: 99%

Large format imaging spectrograph for the Large Submillimeter Telescope (LST)

Kohno

Kawabe

Tamura

et al. 2020

Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X

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We present a conceptual study of a large format imaging spectrograph for the Large Submillimeter Telescope (LST) and the Atacama Large Aperture Submillimeter Telescope (AtLAST). Recent observations of high-redshift galaxies indicate the onset of earliest star formation just a few 100 million years after the Big Bang (i.e., z = 12-15), and LST/AtLAST will provide a unique pathway to uncover spectroscopically-identified "first forming galaxies" in the pre-reionization era, once it will be equipped with a large format imaging spectrograph. We propose a 3-band (200, 255, and 350 GHz), medium resolution (R = 2,000) imaging spectrograph with ∼1.5 M detectors in total based on the KATANA concept (Karatsu et al. 2019), which exploits technologies of the integrated superconducting spectrometer (ISS) and a large-format imaging array. A 1-deg 2 drilling survey (3,500 hr) will capture a large number of [O iii] 88 µm (and [C ii] 158 µm) emitters at z = 8-9, and constrain [O iii] luminosity functions at z > 12.

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“…The Nobeyama 45-m Telescope (Ukita & Tsuboi 1994) is a 45-m diameter Cassegrain-modified-Coude reflector radio telescope that has been operated by the Nobeyama Radio Observatory (NRO), a branch of the National Astronomical Observatory of Japan (NAOJ), National Institutes of Natural Sciences (NINS), since 1982. The telescope is operated in the frequency range of ∼20-116 GHz (wavelengths ∼15 mm-2.6 mm) at a highland of 1350 m altitude in Nagano, Japan.…”

Section: Nobeyama Radio Telescope (Japan)mentioning

confidence: 99%

An International Survey of Front-end Receivers and Observing Performance of Telescopes for Radio Astronomy

Bolli

Orfei

Zanichelli

et al. 2019

PASP

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This paper presents a survey of microwave front-end receivers installed at radio telescopes throughout the World. This unprecedented analysis was conducted as part of a review of front-end developments for Italian radio telescopes, initiated by the Italian National Institute for Astrophysics in 2016. Fifteen international radio telescopes have been selected to be representative of the instrumentation used for radio astronomical observations in the frequency domain from 300 MHz to 116 GHz. A comprehensive description of the existing receivers is presented and their characteristics are compared and discussed. The observing performances of the complete receiving chains are also presented. An overview of on-going developments illustrates and anticipates future trends in front-end projects to meet the most ambitious scientific research goals.

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A 45-m telescope with a surface accuracy of 65 μm

Cited by 15 publications

References 12 publications

New 50-m-class single-dish telescope: Large Submillimeter Telescope (LST)

New 50-m-class single-dish telescope: Large Submillimeter Telescope (LST)

Large format imaging spectrograph for the Large Submillimeter Telescope (LST)

An International Survey of Front-end Receivers and Observing Performance of Telescopes for Radio Astronomy

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