Une prospective en interferometrie optique
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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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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


VLTI: un succès scientifique Optical Astronomy II” (SPIE 4838) Wes Traub quoted a stark sound bite from that meeting’s futures discussion: “

Année 2012

Source: http://olbin.jpl.nasa.gov


Etat actuel de l’interférométrie optique: paysage VLTI Optical Astronomy II” (SPIE 4838) Wes Traub quoted a stark sound bite from that meeting’s futures discussion: “

  • 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?


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)



VEGA/CHARA High angular and spectral resolution Hors-VLTI

(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


Hors-VLTIThe 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


Les outils! Hors-VLTI

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…)


Et l’espace? Hors-VLTI

“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


L’EII Hors-VLTI

http://www.ss7.ulg.ac.be/


La formation Hors-VLTI

Prochaine école VLTI:

  • Centre Seolane, Barcelonette

  • http://vltischool.sciencesconf.org/

  • PUIS

  • Université de Cologne (18 mois plus tard)


La R&D Hors-VLTI

http://www.obs-hp.fr/~hlecorol/workshopOHP/index.php


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