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A concept for a superconducting tunnelling junction based spectrograph

Cropper, M; Barlow, M; Perryman, MAC; Horne, K; Bingham, R; Page, M; Guttridge, P; ... Charles, P; + view all (2003) A concept for a superconducting tunnelling junction based spectrograph. Monthly Notices of the Royal Astronomical Society , 344 (1) pp. 33-44. 10.1046/j.1365-8711.2003.06772.x. Green open access

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Abstract

We describe a multi-order spectrograph concept suitable for 8-m class telescopes, using the intrinsic spectral resolution of superconducting tunnelling junction detectors to sort the spectral orders. The spectrograph works at low orders, 1–5 or 1–6, and provides spectral coverage with a resolving power of R≃ 8000 from the atmospheric cut-off at 320 nm to the long-wavelength end of the infrared H or K band at 1800 nm or 2400 nm. We calculate that the spectrograph would provide substantial throughput and wavelength coverage, together with high time resolution and sufficient dynamic range. The concept uses currently available technology, or technologies with short development horizons, restricting the spatial sampling to two linear arrays; however, an upgrade path to provide more spatial sampling is identified. All of the other challenging aspects of the concept — the cryogenics, thermal baffling and magnetic field biasing — are identified as being feasible.

Type: Article
Title: A concept for a superconducting tunnelling junction based spectrograph
Open access status: An open access version is available from UCL Discovery
DOI: 10.1046/j.1365-8711.2003.06772.x
Publisher version: https://doi.org/10.1046/j.1365-8711.2003.06772.x
Language: English
Additional information: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: instrumentation: detectors, instrumentation: spectrographs IntroductionThis version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Space and Climate Physics
URI: https://discovery.ucl.ac.uk/id/eprint/10096018
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