R. Arsenault, R. Donaldson, C. Dupuy, E. Fedrigo, M. Kasper, N. Hubin, B. Delabre, S. Oberti, J. Paufique, L. Ivanescu, S. Tordo, S. Rossi, A. Silber, J.-L. Lizon, P. Gigan, M. Quattri 20 th AO ESO 27.11.09 Other Contributor s: L. Close, J. Brynnel, J. Farinato, E. Brunetto, S. Stroebele, R. Reiss, E. Marchetti, D. Bonaccini Calia T. Craven- Bartle, M. Comin, T. Phan Duc, A.Wallander s …
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R. Arsenault, R. Donaldson, C. Dupuy, E. Fedrigo, M. Kasper, N. Hubin, B. Delabre, S. Oberti, J. Paufique, L. Ivanescu, S. Tordo, S. Rossi, A. Silber,
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R. Arsenault, R. Donaldson, C. Dupuy, E. Fedrigo, M. Kasper, N. Hubin, B. Delabre, S. Oberti, J. Paufique, L. Ivanescu, S. Tordo, S. Rossi, A. Silber, J.-L. Lizon, P. Gigan, M. Quattri
20th AO ESO 27.11.09
Other Contributors:L. Close,J. Brynnel, J. Farinato,E. Brunetto,S. Stroebele,R. Reiss,E. Marchetti,D. Bonaccini Calia T. Craven-Bartle,M. Comin,T. Phan Duc,A.Wallanders…
MACAO-VLTI:How it started… Challenges…
Low cost - reliable – easy to operate AO system
Polyvalent: feed VLTI, CRIRES, SPIFFI…
Few curvature system in world (IoA Hawaii, CFHT)
Believers/Architects: F. Roddier, G. Monnet, F. Rigaut
AO Group restructure 1999
Fast track !!! (thanks to team !) (FDR-4th Macao: 4 yrs)
See paper 5490-100 on Calibrations Oberti, Bonnet, Fedrigo et al. See paper 5490-182 on Piston Ivanescu, Arsenault, Fedrigo et al.
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Test Bench & Turbulence Generator
MACAO-VLTI System Description
Coude Room View
Front: ITC rack, M9 tower, Macao on XY table
Back: Elec. Cab, APD rack, FOB, M9 cooling, SCP
(For system description see Arsenault et al., 2003, SPIE 4839, p.174)
MACAO-VLTI Performance: Results on UT2
Open-loop Close-loop
HIC59206 V=10Sep. 0.120” Seeing 0.75”
90-second K-band exposure of the central 6 x 13 arcsec2 around the Galactic Center obtained by under average atmospheric conditions (0.8 arcsec seeing). Although the 14.6 magnitude guide star is located roughly 20 arcsec from the field center the present image has a point-source FWHM of about 0.115 arcsec.
5 x 5 arcsec2 K-band image of "Frosty Leo" obtained in 0.7 arcsec seeing. V~ 11, difficult AO target because 3 arcsec in size at visible wavelengths. The corrected image quality is about FWHM 0.1 arcsec.
MACAO-VLTI: Results UT3
Mars image taken in August 8th 2003
Some ~20 mosaic images in K band
Reference source: Deimos
WFS offsets
(excellent “exercise” for MACAO-VLTI functionalities)
(thanks to MKA & STO)
Neptune H band image
Planet disk used for guiding (=3”)
Smallest features ~0.067”
MACAO-VLTI: Results on UT3Interferometry
MACAO Average flux=f(gain) test, 2001-11-03
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Calibrator fringes HD20356 with 2 MACAO’s on UT2-UT3 November ‘03
Flux injected in VINCI fibers (beam combiner) versus MACAO-VLTI main loop gain. Approximately 50 times more flux injected with MACAO than with tip-tilt correction alone.
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Calibrated1st fringes with 2 MACAO’s on UT2-UT3 14.08.03