The higth resolution spectrograph of TNG

Journal
Date Issued
1999
Author(s)
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REBESCHINI, M.
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CALI, Antonio
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Abstract
The status of the high resolution spectrograph of TNG (SARG) is presented. This instrument will be in operation during early spring 2000. SARG will offer both single object and long slit (up to 30 arcsec) observing modes covering a spectral range from \=0.37 up to 0.9 jim, with resolution ranging from R=19,000 up to R=144,000. Cross dispersion is provided by means of a selection of four grisms and interference filters may be used for the long slit mode. A dioptric camera images the cross dispersed spectra onto a mosaic of two 2048 x 4096 EEV CCDs (pixel size: 13.5 jim) allowing complete spectral coverage at all resolving power for \ < 0.8 jim. In order to reach a high wavelength calibration precision an iodine-absorbing cell is provided. A Distribuited Active Temperature Control System (DATCS) maintains constant the temperature of all spectrograph components at a preset value. The costructive characteristics contribute to make SARG a highly competitive instrument in the following scientific goals: Planet search, asteroseismology, chemical composition of fossil remnants of very early stellar populations, studies of stellar and planetary atmospheres; studies of interstellar medium
Coverage
Telescopes, Instruments and data processing for astronomy in the year 2000
All editors
Rifatto, A.; Sedmak, G.
Volume
Supplement to vol. 71 - N.4 - 2000
Conferenece
Telescopes, Instruments and data processing for astronomy in the year 2000
Conferenece place
S. Agata sui due Golfi, Napoli
Conferenece date
12-15 May, 1999
Uri
Url
Issn Identifier
1824-0178
Rights
open.access
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