The VIMOS and NIRMOS multi-object spectrographs for the ESO-VLT

被引：39

作者：

Le Fèvre, O ^{[1
]}

Saisse, M ^{[1
]}

Mancini, D ^{[1
]}

Vettolani, G ^{[1
]}

Maccagni, D ^{[1
]}

Picat, JP ^{[1
]}

Mellier, Y ^{[1
]}

Mazure, A ^{[1
]}

Cuby, JG ^{[1
]}

Delabre, B ^{[1
]}

Garilli, B ^{[1
]}

Hill, L ^{[1
]}

Prieto, E ^{[1
]}

Voet, C ^{[1
]}

Arnold, L ^{[1
]}

Bau-Nogué, S ^{[1
]}

Cascone, E ^{[1
]}

Conconi, P ^{[1
]}

Finger, G ^{[1
]}

Huster, G ^{[1
]}

Laloge, A ^{[1
]}

Lucuix, C ^{[1
]}

Mattaini, E ^{[1
]}

Schipani, P ^{[1
]}

Waultier, G ^{[1
]}

Zerbi, F ^{[1
]}

Avila, G ^{[1
]}

Beletic, J ^{[1
]}

d'Odorico, S ^{[1
]}

Moorwood, A ^{[1
]}

Monnet, G ^{[1
]}

Reyes, J ^{[1
]}

机构：

[1] CNRS, Astron Spatiale Lab, F-13376 Marseille 12, France

来源：

OPTICAL AND IR TELESCOPE INSTRUMENTATION AND DETECTORS, PTS 1 AND 2 | 2000年 / 4008卷

关键词：

multi-object spectroscopy; integral field spectroscopy; spectroscopy; astronomy; fiber technology;

D O I：

10.1117/12.395513

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The VIRMOS consortium of French and Italian Institutes is manufacturing 2 wide field imaging multi-object spectrographs for the European Southern Observatory Very Large Telescope, with emphasis on the ability to carry over spectroscopic surveys of large numbers of sources. The VIsible Multi-Object Spectrograph, VIMOS, is covering the 0.37 to 1 micron wavelength domain, with a full field of view of 4x7x8 arcmin(2) in imaging and MOS mode. The Near InfraRed Multi-Object Spectrograph, NIRMOS, is covering the 0.9 to 1.8 microns wavelength range, with a field of view 4x6x8 arcmin(2) in MOS mode. The spectral resolution for both instruments can reach up to R=5000 for a 0.5 arcsec wide slit. Multi-slit masks are produced by a dedicated Mask Manufacturing Machine cutting through thin Invar sheets and capable of producing 4 slit masks similar to 300x300mm each with similar to 200 slits 5.7mm long (10 arcsec) in less than one hour. Integral field spectroscopy is made possible in VIMOS by switching in the beam specially build masks fed by 6400 fibers coming from a 54x54 arcsec(2) integral field head with a 80x80 array of silica micro-lenses. NIRMOS has a similar IFS unit with a field of 30x30 arcmin(2). These instruments are designed to offer very large multiplexing capabilities. In MOS mode, about 1000 objects can be observed simultaneously with VIMOS, with a S/N=10 obtained on galaxies with I=24 in one hour, and similar to 200 objects can be observed simultaneously with NIRMOS, with a S/N=10 obtained on galaxies with J=22, H=20.6 in Ih at R-eq=200 (R-obs=2500). We present here the status of VIMOS, currently under final integration, with expected first light in the summer 2000, together with the final design of NIRMOS presented at the Final Design Review. The VLT-VIRMOS deep redshift survey of more than 150000 galaxies over the redshift range 0<z<5 will be undertaken based on 120 guaranteed nights awarded to the project.

引用

页码：546 / 557

页数：12

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Szeifert, T ;

Appenzeller, I ;

Furtig, W ;

Seifert, W ;

Stahl, O ;

Bohnhardt, H ;

Gassler, W ;

Haefner, R ;

Hess, HJ ;

Mantel, KH ;

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OPTICAL ASTRONOMICAL INSTRUMENTATION, PTS 1 AND 2, 1998, 3355 :20-27

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