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First Light Adaptive Optics (FLAO) system Acceptance Test results (and beyond!)

First Light Adaptive Optics (FLAO) system Acceptance Test results (and beyond!). The main results of the European acceptance test and first 12 nights of commissioning runs at the LBT telescope of the natural guide star based, single conjugate AO system of LBT. Presented by: S. Esposito. Authors.

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First Light Adaptive Optics (FLAO) system Acceptance Test results (and beyond!)

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  1. First Light Adaptive Optics (FLAO) system Acceptance Test results (and beyond!) The main results of the European acceptance test and first 12 nights of commissioning runs at the LBT telescope of the natural guide star based, single conjugate AO system of LBT. Presented by: S. Esposito

  2. Authors OsservatorioAstrofisicodiArcetri (Italy) : S. Esposito, A. Riccardi, G. Agapito , C. Arcidiacono , R. Briguglio, L. Busoni, L. Fini, A. Gherardi , J. C. Guerra, F. Quirós-Pacheco, F. Pieralli , E. Pinna, A. Puglisi, P. Ranfagni, P. Salinari , P. Stefanini , A. Tozzi,, M. Xompero Large Binocular Telescope Observatory : G. Brusa-Zappellini, R. Demers, J. Brynnel Acknowledgements: LBTO telescope crew, TO, J. Hill Support Astronomer: F. Mannucci ESO: R. Arsenault

  3. Talk overview • Main results of the FLAO acceptance test in Europe: 14th – 18th December 2009 • Summary of system installation at the telescope: 10th February – 15th March 2010 • Results from the first two on sky runs: • 24th May -3rd June, 2010, [8nights/2days] • 18th – 25th June, 2010, [4nights/1day]

  4. FLAO system key components J. Hill, 7733-8 (June 27th ) F. Quiros, 7736-128 (June 28th ) J. Brynnel, 7733-89 (July 2nd ) A. Riccardi, 7736-82 (July 2nd ) • LBT672a unit • 911mm diameter • 1.6mm thick, (Mirrorlab) • 672 actuators • Settlingtime < 1ms • 30nm WFE • LBT WFS unit • Pyramid sensor • 30x30 to 5x5 subap. • Tilt mod.  2-6 l/D • 1Kfps max [30x30]

  5. Acceptance test: TestToweroptical set-up RETROREFLECTOR iscomposedby a f/1 parabola and a flatmirror. Reflects back incominglights & reimages the pupil on the AdaptiveSecondary  REFERENCE SOURCE generating a point-like source in the focalplanewith an f/15 beam as the LBT F/. The light source is an incandescence lamp.   IRTC. The LBT InfraRed Test Camera to record images. Ithas J and H filters and 3 samplingof 10; 20 ; 100 mas/pix. A dichroicreflect VIS to WFS and trasnmit NIR to IRTC

  6. KL mode Pyramid Signals (Sx, Sy) Num. Shape Bin#1 Bin#2 Bin#3 Bin#4 4 20 100 Acceptance test: IM measurements IM acquired using fast push pull technique & closed loop.

  7. Acceptance test: SR in H band Closedloop test in solartowerwithartificialturbulence: SR values in H band vs. star magnitude. K band SR values FLAO labmeas. FLAO labmeas. FLAO goal FLAO goal FLAO baseline Measurements conditions were intermediate between baseline and goal assumptions for RON; # of modes, thin shell flat. FLAO baseline BIN3 66 modes K band SR values achieved by scaling the SR measured in H band with Marechal formula BIN4 36modes BIN1 495modes BIN2 153modes

  8. MR=8.5, SRH=83% MR=10.5, SRH=58% MR=12.3, SRH=45% arcsec arcsec arcsec MR=14.6, SRH=23% MR=16.4, SRH=5% Seeing-limited, SRH=0.5% arcsec arcsec Acceptance test: correctedPSFs bin1 bin2 bin2 bin4 bin3 Emulated turbulence: seeing of 0.8”, V=15 m/s

  9. Acceptance test: correctedwavefrontmodaldecomposition FQ The modaldecompositionof the wavefrontresidualsfor the 4 differentbinningmodes.

  10. Acceptance test: SR vs. seeingcondition Measuredvalueof the SR in H band forseeingvaluesof 0.6, 0.8 and 1.5 arcsec SR valuesof the seeinglimitedcases 0.010 (0.6”) 0.005 (0.8”) 0.001 (1.5”)

  11. FLAO system installation @ LBT February 9th --March 17th .

  12. FLAO system installation @ LBT February 9th --March 17th .

  13. FLAO system installation @ LBT February 9th --March 17th .

  14. FLAO system installation @ LBT February 9th --March 17th .

  15. FLAO system installation @ LBT February 9th --March 17th .

  16. FLAO system installation @ LBT February 9th --March 17th .

  17. FLAO system installation @ LBT February 9th --March 17th .

  18. First on sky results: May 25th Some of the first closed loop images acquired the 25th of May The object: HD 124085, K0, R=7.5 , I=6.9, H=5.8, Triple Star The atmosphere: seeing0.6arcsec V band Elevation58..64 FLAO parameters: 1 KHz, 30x30 subaps, 400 correctedmodes Results: SR H 65%..73% Intensitiesbetween open and closedlooprescaledfordisplayingpurposes. 3.2 arcsec LBT InfraRedTest Camera images: H band, 10mas/pixel scale

  19. The HD 124624 images and SR The reference: HD 124624 [14:13:54.67 +37:37:34.2] R =7.1, H=4.4, J=5.1, K5III The atmosphere: seeing0.9arcsec V band FLAO parameters: 1KHz, 30x30 subaps,400 correctedmodes Best SRs achieved! 85% H (1s) 47% J (1s) 0.72” J Band 46.6% SR in 20 sec H Band 75% SR in 12sec

  20. High H band SR images The reference: HD175658, R =6.5, H=2.5 The atmosphere: seeing 0.9 arcsecV band FLAO parameters: 1KHz, 30x30 subaps,400 correctedmodes

  21. First on skyresults: correctedimage at 850nm Star mag => R=9.3 J=7.5 H=6.7 The 850nm SR isconsistentwithMarechalscalingof 65% SR in H band Sensor: E2V CCD47 Filter 850nm; BW 40nm Texp=6s, scale=20mas/pix Drizzlingof 5 images SR~20% FWHM=40mas (DL=20mas) IRTC H Band, scale=10mas/pix, SR~65% Horizontal cut

  22. First on skyresults: a 40mas separationbinary Star companion Image data H band 4s exposure time SR > 60% (no correction for 2nd star flux) FLAO parameters 30x30 subaps 400 correctedmodes 1Khz frame rate

  23. H band SR vs star mag & seeing Twoon skyrunsperformed: May 25th-June 3rd, June18th – June 25th Averagevalueofclosedlooptimeis 4h/night over 12 nights. K band SR valuesscaledfromprevious plot 2MASS J19460752+2231122 R+I mag 17.0 SR 6.2% H band FWHM 0.1 arcsec DIMM 0.9” 7x7 subaps 36 modes, 200 Hz 16 ph/subap/frame 2MASS J19334425+1947482 R+I mag 17.8 FWHM gain 1.4 DIMM 0.9” 7x7 subaps 5 modes, 100Hz 18 ph/subap/frame Eachpointcorrespondto a different target and reportsanaveragevalueof the achieved SR. Seeing values measured by LBT DIMM

  24. Imagingglobular cluster NGC6341-M92 The reference: R 11.5 The atmosphere: seeing0.7arcsec V band Elevation 58..69 FLAO parameters: 0.5KHz, 15x15 subaps, 153 correctedmodes LBT test camera Limiting Magnitude H = 21, in 10minutes (with AO on) FLAO H Band 8min HST WFPC3 H Band 20min Dati sulla configurazione del sistema adattivo durante la osservazione ~10 arcsec Composite imageJ+H Composite imageJ+H

  25. Conclusion • FLAO acceptance test in 14-18 December 2009 was successful. The system meets specifications. H band SR of 80% and 5% at 8 and 16.5 magnitude star with 0.8 arcsec and v=15m/s . • System was installed at LBT in period February/March 2010. • On sky first operation is successful: SRs H(K) of 85(92) with mag 8 and SRs H(K) of 6.2 (22) with mag 17.0 (0.8” seeing). • FLAO averageclosed loop time of about 4 hours/night over 12 nights. • FLAO system commissioning is scheduled to finish by the end of the year 2010.

  26. First on skyresults: a 40mas separationbinary H band images: rawimage (left) and withshift&add (right). The improvement in peakintensityis a factor 1.20. Data reductionshowsvibrationlines at 13Hz and 23 Hz (res. tilt jitter 5-10 mas). SR > 60% AR Composite imageJ+H FLAO parameters 30x30 subaps 400 correctedmodes 1Khz frame rate 4s exp. time

  27. Settlingtimewait Exposure Acceptance test: IM labmeasurements Basicstepsof IM acquisition Acquire IM in open loop. Generate a REC with 10 modes. Measure a new IM in closedloopwith 10 modes & low gain (0.05). Mode #2 Mode #1 Mode #0 Measurement in fast push-pullrequirestipically 5 minutesfor 600 modes.

  28. Titoli di coda

  29. FP7-JRA1 progress meeting 2, 14-15 January 2010, Florence (ITALY) The FLAO solar tower test LBT672 911mm F/1.22 1064.7mm Test of the complete AO system in Europe: 1. Test of system performance: SR vs. star mag, r0, v_wind 2. Test of system observing modes: a) Seeing limited mode b) Field stabilization mode c) AO mode F1 F/15.0 Light from WFS ref. source 13713mm WFS unit F2 LUCIFER dichroic window LBT IRTC

  30. FP7-JRA1 progress meeting 2, 14-15 January 2010, Florence (ITALY) Seeing generation A disturbance simulating the OPD variation of a given phase screen is added to each one of the actuator commands computed by the FLAO reconstructor. WFS slopes ACT disturbance WFS computation unit (BCU) ACT commands Turbulence history act=1,672 AO RECONSTRUCTOR ACT final commands Optical coupling

  31. FP7-JRA1 progress meeting 2, 14-15 January 2010, Florence (ITALY) W unit and InfraRed test Camera (IRTC)

  32. FP7-JRA1 progress meeting 2, 14-15 January 2010, Florence (ITALY) The FLAO control software The FLAO system is controlled by a complex architecture control SW made up of various parts showed in the picture below. The control SW has three main levels of commands listed below from top to bottom: AOS GUI Master instrument IIF AOS control • 1) The command issued by the master instruments like IRTC or LUCIFERto TCS (IIF calls to TCS module called IIF). 2) The commands issued by the AOS to the AO supervisor SW. 3) The command issued by the AO supervisor and AO arbitrators.These commands includes low level commands to control AO system HW. LBT TCS

  33. Controlling the FLAO system Load a particular flat on the secondary mirror. Used mainly in SLM. Set ref. source nominal co-ordinates, magnitude and color. Use of system look-up table. Command to acquire the reference star moving the WFS stages. Command to start closed

  34. FP7-JRA1 progress meeting 2, 14-15 January 2010, Florence (ITALY) System automatic configuration R0=0.13 Vband, v_wind = 15 m/s AO mode conf. table Columns: # 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 mag bin freq phot modes base rec filtering pupils slopenulltt gain fw1_acq fw2_acq fw1_obs fw2_obs TVbinTVfreqTVavgTVflux 6.0 maximum magnitude 8.5 1 1000 213 496 KL 20091207_165435 pureIntegrator 20090925-113454 zero 2 0.3 0 0 0 0 4 4.3 20 5000 9.5 1 1000 85 496 KL 20091207_165435 pureIntegrator 20090925-113454 zero 2 0.3 0 0 0 0 4 4.3 20 2000 10.5 2 800 166 153 KL 20091105_175922 pureIntegrator 20090928-221919 zero 3 0.9 0 0 0 0 16 12.6 100 5000 11.5 2 625 84 153 KL 20091105_175922 pureIntegrator 20090928-221919 zero 3 0.9 0 0 0 0 16 12.6 100 1800 12.5 2 625 34 153 KL 20091105_175922 pureIntegrator 20090928-221919 zero 3 0.9 3 0 0 0 16 12.6 100 7000 13.5 2 400 21 153 KL 20091105_175922 pureIntegrator 20090928-221919 zero 3 0.9 3 0 0 0 16 12.6 100 2500 14.5 3 200 35 66 KL_v2 20091208_180600 pureIntegrator 20090928-222825 zero 6 0.8 4 0 0 0 16 12.6 100 1700 15.5 4 200 28 36 KL_v2 20091209_195122 pureIntegrator 20091110-152038 zero 6 0.6 4 0 0 0 16 12.6 100 600 16.5 4 100 22 36 KL_v2 20091209_195122 pureIntegrator 20091110-152038 zero 6 0.6 4 0 0 0 16 12.6 100 250 Field Stabilization mode conf. table #Columns: # 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 mag bin freq phot modes base rec filtering pupils slopenulltt gain fw1_acq fw2_acq fw1_obs fw2_obs TVbinTVfreqTVavgTVflux 6.0 maximum magnitude 8.5 4 500 7066 5 KL_v2 20091210_181737 pureIntegrator 20091110-152038 zero 6 0.8 0 0 0 0 4 4.3 20 5000 9.5 4 500 2812 5 KL_v2 20091210_181737 pureIntegrator 20091110-152038 zero 6 0.8 0 0 0 0 4 4.3 20 2000 10.5 4 500 1120 5 KL_v2 20091210_181737 pureIntegrator 20091110-152038 zero 6 0.8 0 0 0 0 16 12.6 100 5000 11.5 4 500 444 5 KL_v2 20091210_181737 pureIntegrator 20091110-152038 zero 6 0.8 0 0 0 0 16 12.6 100 1800 12.5 4 500 176 5 KL_v2 20091210_181737 pureIntegrator 20091110-152038 zero 6 0.8 3 0 0 0 16 12.6 100 7000 13.5 4 500 70 5 KL_v2 20091210_181737 pureIntegrator 20091110-152038 zero 6 0.8 3 0 0 0 16 12.6 100 2500 14.5 4 500 28 5 KL_v2 20091210_181737 pureIntegrator 20091110-152038 zero 6 0.8 4 0 0 0 16 12.6 100 1700 15.5 4 400 14 5 KL_v2 20091210_181737 pureIntegrator 20091110-152038 zero 6 0.8 4 0 0 0 16 12.6 100 600 16.5 4 100 22 5 KL_v2 20091210_181737 pureIntegrator 20091110-152038 zero 6 0.8 4 0 0 0 16 12.6 100 250 17.5 4 100 8 5 KL_v2 20091210_181737 pureIntegrator 20091110-152038 zero 6 0.8 4 0 0 0 16 12.6 100 125

  35. FP7-JRA1 progress meeting 2, 14-15 January 2010, Florence (ITALY) H band measured Strehl ratios

  36. FP7-JRA1 progress meeting 2, 14-15 January 2010, Florence (ITALY) MR=8.5, SRH=83% MR=12.3, SRH=45% MR=14.6, SRH=23% MR=16.4, SRH=5% Corrected PSFs in H band (0.8”,v_wind15m/s) Uncorrected SR = 0.5%

  37. FP7-JRA1 progress meeting 2, 14-15 January 2010, Florence (ITALY) Modal decomposition of correction

  38. FP7-JRA1 progress meeting 2, 14-15 January 2010, Florence (ITALY) SR vs. seeing conditions 0.6” 0.8” 1.5”

  39. FP7-JRA1 progress meeting 2, 14-15 January 2010, Florence (ITALY) Interpolated K band SRs To obtain the K band Srs values we scaled the measured H band results to K band by using an interpolation function identified by numerical simulations. This is done by computing, in simulation, the corresponding K_band SR achieved when a given H_band SR is found.

  40. FP7-JRA1 progress meeting 2, 14-15 January 2010, Florence (ITALY) Sky coverage estimate [F. Roddier] Assume 30 arcsec of isoplanatic patch radius full, long and short dash lines refer to the Galactic plane, middle latitude and Galactic pole [A. Tokovinin]

  41. FP7-JRA1 progress meeting 2, 14-15 January 2010, Florence (ITALY) Commissioning main tasks Commissioning campaign duration: -total time 93 days -days 57 - (good) nights 36 eq. to 54 nigths

  42. FP7-JRA1 progress meeting 2, 14-15 January 2010, Florence (ITALY) AO Commissioning activity Activity start date 10Feb10 System unpacking, re-integration &check 10DD 2. Telescope installation of subsystems 12DD 3. System initial day-time calibration 4. Telescope operation in seeing limited mode with adaptive secondary 5. Daytime test with retro-reflector 6. First light on sky 5NN

  43. FP7-JRA1 progress meeting 2, 14-15 January 2010, Florence (ITALY) Manpower for FLAO #1 commissioning The required manpower is found compatible with the available resources of the group. The group relevant personnel is composed by 17 persons. About 5-7 personnel units will be available in Arcetri to progress with FLAO#2 test in solar tower (13/01/10-06/07/10).

  44. FP7-JRA1 progress meeting 2, 14-15 January 2010, Florence (ITALY) Conclusions • FLAO #1 has been in operation for 5 months in Arcetri. Test phase has been concluded with the FLAO acceptance test. • FLAO acceptance was OK. • 1. measured SRs equal or close to goal values. • a) SR 85(80)% in K (H) band bright stars (8.5,9.5 mag) • b) SR 16(5) % in K (H) band faint stars (16.5 mag) • 2. FLAO control SW able to go from power on to closed loop in 5/6 click successfully (including ref. source acquisition). • FLAO #1 is now being shipped to LBT, arrival scheduled for February 10. • FLAO #1 telescope first light is scheduled in May 2010.

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