Afficher la notice abrégée

hal.structure.identifierCanada-France-Hawaii Telescope Corporation [CFHT]
dc.contributor.authorCUILLANDRE, Jean-Charles
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
dc.contributor.authorFORT, Bernard P.
hal.structure.identifierObservatoire Midi-Pyrénées [OMP]
dc.contributor.authorPICAT, Jean-Pierre
hal.structure.identifierObservatoire Midi-Pyrénées [OMP]
dc.contributor.authorSOUCAIL, Geneviève
dc.contributor.editorIye
dc.contributor.editorMasanori; Moorwood
dc.contributor.editorAlan F. M.
dc.date.issued2003
dc.date.conference2002-08-22
dc.description.abstractEnBack on several on-sky tests using the Multi-Object Spectrography at the Canada-France-Hawaii Telescope, we present refinements of the faint objects optical spectroscopy technique we proposed in 1994 (initially names "Va-et-Vient" = "Back-and-Forth"), a nod-and-shuttle technique that preserves a sky dominated photon noise regime. We validated schemes that allow 100% of the total telescope time used to integrate the light from the scientific objects. We also investigated how to optimize the configuration of the charge sifting in order to use minimal space on the detector. For typical distant galaxy fields (profile dominated by seeing), we demonstrated an increase by a factor of approximately 2 of the multiplex gain and even higher for more compact sources. The technique proves perfectly apt at eliminating all the systemic errors that may cause the saturation of the signal-to-noise ratio: slit defects, CCD fringing, and flat-field residuals. This technique is also the most efficient and unique approach to use curved slits.
dc.language.isoen
dc.source.titleProceedings of the SPIE
dc.title.enBack and forth spectroscopy: optimization of an optical nod-and-shuffle technique to reach fainter objects and increase the multiplex gain on multi-object spectrographs
dc.typeCommunication dans un congrès
dc.identifier.doi10.1117/12.476737
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]
bordeaux.page1531-1538
bordeaux.volume4841
bordeaux.conference.titleInstrument Design and Performance for Optical/Infrared Ground-based Telescopes
bordeaux.countryUS
bordeaux.title.proceedingProceedings of the SPIE
bordeaux.conference.cityWaikoloa, Hawaii
bordeaux.peerReviewednon
hal.identifierhal-03744018
hal.version1
hal.proceedingsoui
hal.conference.end2002-08-28
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03744018v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.btitle=Proceedings%20of%20the%20SPIE&rft.date=2003&rft.volume=4841&rft.spage=1531-1538&rft.epage=1531-1538&rft.au=CUILLANDRE,%20Jean-Charles&FORT,%20Bernard%20P.&PICAT,%20Jean-Pierre&SOUCAIL,%20Genevi%C3%A8ve&rft.genre=unknown


Fichier(s) constituant ce document

FichiersTailleFormatVue

Il n'y a pas de fichiers associés à ce document.

Ce document figure dans la(les) collection(s) suivante(s)

Afficher la notice abrégée