Preparing MIDI for science operations Preparing MIDI for science operations on Paranal on Paranal

Markus SchöllerMarkus Schöller

Jean-Gabriel Cuby, Sebastien Morel, Andrea RichichiJean-Gabriel Cuby, Sebastien Morel, Andrea Richichi

Schloss Ringberg,Schloss Ringberg,

September 03, 2003September 03, 2003

VLTIVLTI

• All UT Coude trainsAll UT Coude trains• UT1 tip/tilt (STRAP)UT1 tip/tilt (STRAP)• UT2 and UT3 full AO (MACAO)UT2 and UT3 full AO (MACAO)• Transfer OpticsTransfer Optics• 3 Delay Lines3 Delay Lines• VINCIVINCI• MIDIMIDI• Four staff astronomers, three Four staff astronomers, three

fellows, several TIOs in Chilefellows, several TIOs in Chile• SID commissioning finishedSID commissioning finished

First Fringes First Fringes General User Instruments General User Instruments

PhasesPhases

• Assembly, Integration, Verification (AIV), which ends Assembly, Integration, Verification (AIV), which ends with First Fringeswith First Fringes

• Commissioning under the responsibility of the Commissioning under the responsibility of the Instrument TeamInstrument Team

• ““Paranalization” under the responsibility of ESOParanalization” under the responsibility of ESO• Science Demonstration TimeScience Demonstration Time• Open Time with Guaranteed TimeOpen Time with Guaranteed Time

Goals of ParanalizationGoals of Paranalization

• Test the robustness of the instrumentTest the robustness of the instrument• Ensure operatibility of the instrument in the science Ensure operatibility of the instrument in the science

operations groupoperations group• Verify instrumental performance and magnitude Verify instrumental performance and magnitude

limitslimits

Paranal organigrammParanal organigramm

MIDI - runs on the Unit TelescopesMIDI - runs on the Unit Telescopes

• first fringes obtained on first fringes obtained on December 15, December 15, 20022002• comm 1 in February 2003comm 1 in February 2003• comm 2 in May 2003comm 2 in May 2003• paranalization, GTO/SDT in paranalization, GTO/SDT in June 2003June 2003• paranalization in August and paranalization in August and

September 2003September 2003• SDT in November 2003SDT in November 2003• comm 3 in December 2003comm 3 in December 2003• paranalization and GTO/SDT in paranalization and GTO/SDT in

January/February 2004January/February 2004• science operations will start in science operations will start in

P73 (Apr 2004)P73 (Apr 2004)

Identified problemsIdentified problems

• OPD jumps OPD jumps • Tunnel/light duct seeingTunnel/light duct seeing• M2 return accuracy when choppingM2 return accuracy when chopping• MIDI tracking on ghost (2% vs 40% visibility, ±3.5mm MIDI tracking on ghost (2% vs 40% visibility, ±3.5mm

from nominal OPD) on very bright objectsfrom nominal OPD) on very bright objects

VLTI Data Flow SystemVLTI Data Flow System

DFS Hardware

VINCI Data ReleasesVLTI FITS DICDVLT-SPE-ESO-15000-2764NGAST UpdateWeb Archive Interface

On-Line VINCI PipelineMIDI, AMBER Pipeline

VINCI QC LogsAutomatic ReportsMIDI AMBER: Calibration DatabaseQC1 Parameters

Visibility CalculatorWeb Calib. Selection ESOFORM/PHRSVINCI ETCMIDI, AMBER ETCsScheduling

VINCI TemplatesOBs created with P2PPMIDI, AMBER TemplatesExtern. Verif. Modules

Call for Proposals - P73Call for Proposals - P73

• Call for Proposals Call for Proposals released on Sep 01, 2003released on Sep 01, 2003• Proposal deadline on Proposal deadline on Oct 01, 2003 Oct 01, 2003 • Observing April - Observing April - September 2004 September 2004

Call for Proposals - DetailsCall for Proposals - Details

• UT2/3 and UT1/3 (April-June only)UT2/3 and UT1/3 (April-June only)• Use of STRAP (tip/tilt)Use of STRAP (tip/tilt)• MIDI in low dispersion mode only (prism)MIDI in low dispersion mode only (prism)• Internal fringe tracking onlyInternal fringe tracking only• Limiting flux of 5JyLimiting flux of 5Jy• Limiting magnitude of V=16 (STRAP guiding)Limiting magnitude of V=16 (STRAP guiding) V~10% (no overlap compensation)V~10% (no overlap compensation)

Proposal Preparation IProposal Preparation I

• http://www.eso.org/instruments/midi/http://www.eso.org/instruments/midi/• Check objects against MIDI GTO listCheck objects against MIDI GTO list

VLTI open pointsVLTI open points

• Final installation of Final installation of Variable Curvature Variable Curvature Mirrors (VCM) in the Mirrors (VCM) in the Delay LinesDelay Lines

• Delay Line Metrology Delay Line Metrology upgradeupgrade

• Close the FINITO loopClose the FINITO loop• MACAO installation on MACAO installation on

UT1/4 and fine tuningUT1/4 and fine tuning• Auxiliary TelescopesAuxiliary Telescopes

Instrument Operations PageInstrument Operations Page

MIDI open pointsMIDI open points

• GrismGrism• Dispersed fringe trackingDispersed fringe tracking• Use of all filtersUse of all filters• Integrate-then-read (ITR) modeIntegrate-then-read (ITR) mode• External fringe trackingExternal fringe tracking• Spatial filtersSpatial filters• Acquisition of complex objectsAcquisition of complex objects