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Une prospective en interferometrie optique

Une prospective en interferometrie optique. Olivier CHESNEAU . In his introduction to the 2002 “Interferometry for Optical Astronomy II” (SPIE 4838) Wes Traub quoted a stark sound bite from that meeting’s futures discussion: “ We need to deliver good science this decade or we are dead ”.

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Une prospective en interferometrie optique

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  1. Une prospective en interferometrie optique • Olivier CHESNEAU

  2. In his introduction to the 2002 “Interferometry for Optical Astronomy II” (SPIE 4838) Wes Traub quoted a stark sound bite from that meeting’s futures discussion: “We need to deliver good science this decade or we are dead” 420 refereed astrophysics papers (including 12 in Nature and 4 in Science) since 2000

  3. VLTI: un succès scientifique Année 2012 Source: http://olbin.jpl.nasa.gov

  4. Etat actuel de l’interférométrie optique: paysage VLTI • Un nouveau VLTI Scientist: • J-Ph. Berger • Quels défi pour le VLTI? • La situation de PRIMA, • Dequalification de MIDI, • PIONIER / AMBER • La pression du manpowerdans le contexte de l’ELT • L’arrivée de GRAVITY et MATISSE dans les 3 ans, • Besoin d’un fringetracker!! • L’optique adaptative qui sera installée sur les ATs • Garder la compatibilité des 4 UTs avec les contraintes du VLTI, • Augmenter les bases? 140m versus 200m • Vers une instrumentation de 3ème génération?

  5. Etat actuel de l’interférométrie optique: paysage Hors-VLTI • -KeckInterferometerwithitsNuller (KIN)  (definitely?) closed • -CHARA (Center for High AngularResolutionAstronomy) and its instruments VEGA, PAVO and MIRC (and also CLASSIC/FLUOR/CLIMB) • - N(P)OI (NavyPrecision Optical Interferometer) (en développement rapide) • -SUSI (Sydney UniversityStellarInterferometer) with PAVO and MUSCA, • -MROI (Magdalena RidgeObservatoryInterferometer) (en construction, standby?) • -LBT (Large BinocularTelescope) withitsInterferometer (LBTI-nuller) and its future instrument LINC-NIRVANA –Fizeau mode (en cours d’achèvement) • LBTI: Hunt for Observable Signatures of Terrestrial planetary Systems (HOSTS) • LBTI Exozodi, Exoplanet Common Hunt (LEECH)

  6. L’interféromètre CHARA

  7. VEGA/CHARA High angular and spectral resolution (OCA/ P.Is N. Nardetto/D. Mourard) VEGA/CHARA & VISIBLE VLTI Apport de VEGA Mode 3T Remote control CHARA Array Année 2012 09-2007: Integration 07-2008: First science light 10-2008: Mode 3T 07-2009: Remote operation 06-2010: First science papers 10-2010: Mode 4T 08-2011: 11 papers in total (2 technical) 2011 : 3T/4T VEGA + IR instruments 30 programs, 50 nights per year Mode 4T

  8. “The discussion returned several times to the merits of efficiency and simplicity “ SPIE 2012, concluding discussion • Grande questions de notre communauté: • Quel réseau interférométrique? • VLTI – 8m / 130m • CHARA – 34m / 330 • Un nouveau? • Elargir le domaine de longueur d’onde? • VLTI: H-K-LMN  vers J? Le visible? • CHARA: V/R/I, H and K

  9. Les outils! JMMC: - SearchCal JSDC - ASPRO - LITpro Reconstruction d’image: - SPIE Beauty contest Modèle fitting et reconstruction chromatique: - ANR POLCA (P.I.M. Tallon) MAIS aussi: - La R&D détecteurs, - les algorithmes pour les suiveurs de franges, - La R&D optique (composants, recombaison…)

  10. Et l’espace? “The diminution of submissions was particularly striking in the field of space interferometry where only one project was represented, BETTII (Balloon Experimental Twin Telescope for Infrared Interferometry) … In contrast aperture masking interferometry and its derivatives are on the rise.“ SPIE 2012, concluding discussion http://www.blue-dots.net/Download-the-Exoplanet-White-Paper But: spectroscopie directe, ce qui implique en principe le développement d'un corono (pour le visible) ou d'un interféromètre annulant (pour l'IR). Voir l’intervention de Fabien http://www.eso.org/sci/libraries/SPIE2012/8445-0.pdf

  11. L’EII http://www.ss7.ulg.ac.be/

  12. La formation Prochaine école VLTI: • Centre Seolane, Barcelonette • http://vltischool.sciencesconf.org/ • PUIS • Université de Cologne (18 mois plus tard)

  13. La R&D http://www.obs-hp.fr/~hlecorol/workshopOHP/index.php

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