On the Application of Integral Field Unit Design Theory for Imaging Spectroscopy

Integral field spectroscopy is a powerful tool for astronomical observation, of particular importance to large telescopes. In this paper, different techniques for the design and construction of integral field units (IFUs) are described, concentrating on the use of lenslet arrays coupled to fibers. T...

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Veröffentlicht in:	Publications of the Astronomical Society of the Pacific 2002-08, Vol.114 (798), p.866-878
Hauptverfasser:	Ren, Deqing, Allington‐Smith, Jeremy
Format:	Artikel
Sprache:	eng
Schlagworte:	Figure of merit Imaging Light beams Magnification Optical lenses Spectral resolution Spectroscopy Telescopes Wavelengths
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creator	Ren, Deqing Allington‐Smith, Jeremy
description	Integral field spectroscopy is a powerful tool for astronomical observation, of particular importance to large telescopes. In this paper, different techniques for the design and construction of integral field units (IFUs) are described, concentrating on the use of lenslet arrays coupled to fibers. The theory of the design of the foreoptics, lenslets, and fibers is presented. The effects of the fiber oversizing and focal ratio degradation on IFU performance are described. A mathematical model is developed that can be used to calculate the optimized fiber core size according to the required coupling efficiency. A figure of merit for the IFU system is also derived, which can be used to estimate and compare the performance of different IFU systems. Finally, a design example is given to demonstrate the applications of this theory.
doi_str_mv	10.1086/341710
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In this paper, different techniques for the design and construction of integral field units (IFUs) are described, concentrating on the use of lenslet arrays coupled to fibers. The theory of the design of the foreoptics, lenslets, and fibers is presented. The effects of the fiber oversizing and focal ratio degradation on IFU performance are described. A mathematical model is developed that can be used to calculate the optimized fiber core size according to the required coupling efficiency. A figure of merit for the IFU system is also derived, which can be used to estimate and compare the performance of different IFU systems. Finally, a design example is given to demonstrate the applications of this theory.</description><identifier>ISSN: 0004-6280</identifier><identifier>EISSN: 1538-3873</identifier><identifier>DOI: 10.1086/341710</identifier><language>eng</language><publisher>The University of Chicago Press</publisher><subject>Figure of merit ; Imaging ; Light beams ; Magnification ; Optical lenses ; Spectral resolution ; Spectroscopy ; Telescopes ; Wavelengths</subject><ispartof>Publications of the Astronomical Society of the Pacific, 2002-08, Vol.114 (798), p.866-878</ispartof><rights>2002. The Astronomical Society of the Pacific. All rights reserved. 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In this paper, different techniques for the design and construction of integral field units (IFUs) are described, concentrating on the use of lenslet arrays coupled to fibers. The theory of the design of the foreoptics, lenslets, and fibers is presented. The effects of the fiber oversizing and focal ratio degradation on IFU performance are described. A mathematical model is developed that can be used to calculate the optimized fiber core size according to the required coupling efficiency. A figure of merit for the IFU system is also derived, which can be used to estimate and compare the performance of different IFU systems. 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source	IOP Publishing Journals; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; JSTOR Archive Collection A-Z Listing; Institute of Physics (IOP) Journals - HEAL-Link; Alma/SFX Local Collection
subjects	Figure of merit Imaging Light beams Magnification Optical lenses Spectral resolution Spectroscopy Telescopes Wavelengths
title	On the Application of Integral Field Unit Design Theory for Imaging Spectroscopy
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