Allowable structural MIsalignments 45-A+B=45-B A 2B=A Magnification m=10 B=0.5 A10=5A. In reality, a factor of 6.4 works well up to 0.01 degree 45-B Telescope Tilt FSM Comp FSM OPD Strehl Ratio SR Deal larcsecDegl Max[ mm Aberrated restored 0.034 degree 000010.36 -0.00064 0.687 0.982 B= FSM 0.001 3.6 -0.0064 0.016 0.979 rotation 0.00518 -0.032 0.192 0.907 0.01 -0.064 0.064 0.604 0.01 -0.064 0.0002 0.189 0859 0.01 degree tilt FSM Correction OPD Correction
Chart: 6 Allowable Structural Allowable Structural Misalignments Misalignments B= FSM rotation A B 45-B 45-A+B = 45- B 2B=A B= 0.5 *A *10 = 5 A. In reality, a factor of 6.4 works well up to 0.01 degree Telescope Tilt [Deg] [arcsec] FSM Com p [Deg] Max 0.034 degree FSM OPD [mm] Strehl Ratio Aberrated SR restore d 0.0001 0.36 -0.00064 0 0.687 0.982 0.001 3.6 -0.0064 0 0.016 0.979 0.005 18 -0.032 0 0.192 0.907 0.01 36 -0.064 0 0.064 0.604 0.01 36 -0.064 0.0002 0.189 0.859 Magnification m=10
Passive/Active Actuators Mount 14 urad FSM MOUNT PHYSIK INS Angular range+/-7° ° Angular res.+/-0.0008°(14urad) 600 urad FSM O Linear Range 1 cm Linear res I um FSM+ODL Angular Range +/-600 urad Angular Res. +/-0.05 urad Linear Range 12 um · Linear res.0.2nm 4‖。十 Pyramid Errors W/o fsm correction SR=0.444 Pyramid Errors 7 /fSM Correction Pyramidal mirror Pyramidal mount SR=0.960
Chart: 7 Passive/Active Actuators Passive/Active Actuators 1 2 3 4 5 6 FSM+ODL • Angular Range +/- 600 µrad • Angular Res. +/- 0.05 µrad • Linear Range 12 µ m • Linear Res. 0.2 nm FSM+ODL • Angular Range +/- 600 µrad • Angular Res. +/- 0.05 µrad • Linear Range 12 µ m • Linear Res. 0.2 nm FSM MOUNT •Angular Range +/- 7 ° • Angular Res. +/- 0.0008° (14 µrad) • Linear Range 1 cm • Linear Res. 1 µ m FSM MOUNT •Angular Range +/- 7 ° • Angular Res. +/- 0.0008° (14 µrad) • Linear Range 1 cm • Linear Res. 1 µ m 7° 600 µrad 0.05 µrad FSM Mount 14 µrad Pyramid Errors w/o FSM Correction SR = 0.444 Pyramid Errors w/ FSM Correction Pyramidal Mirror Pyramidal mount SR = 0.960
Attitude Control System(ACS) d=- size of pixels (un 50 deg 1.5 deg Overlap f=focal length of optic 7x5.25 deg viewfinder 0.656 arcmin FOV f=38.8 mm 3.07x2.3 arcmin 0.288 arcsec f=5300470um Sensor 1 Active Electronic Compass Balancing System Sensor 2. Viewfinder #53155 ACS Actuator. Sensor 3 Reaction Rate gyro Wheel Chart: 8
Chart: 8 Attitude Control System (ACS) Attitude Control System (ACS) Sensor 2: Viewfinder Sensor 2: Viewfinder ACS Actuator: Reaction Wheel ACS Actuator: Reaction Wheel Body r ate Body rotation Wheel speed + e τ Q d Q Sensor 3: Rate Gyro Sensor 3: Rate Gyro Sensor 1: Electronic Compass Sensor 1: Active Electronic Compass Balancing System Active Balancing System
Structures Design Viewfinder Holes Pyramidal Fast Through Setscrews Motor Combiner CCD ous Section Setserews and Pins in Holes
Chart: 9 Structures Design Structures Design
Sparse-aperture Optics/Control System ( socS)Framework O Analyze Optics Performance Requirements Br EE SR PSFMTF SNR FoV ACS 2 Determine Array configuration L D#of Aperture 3 Determine Tolerable beam Track Combining Errors WFE Piston Tilt/Tip Pupil Budget mapping RMS WF Error Budget Tree 4 Design/Build Sub-Aperture 6 Design dEsign Telescope Relay Optics" CCD System且莒豆 Focal 1 M=d/D Reflection Geometry d Beam Combiner Control Channel og 0 Design, Analyze, Build Structures m3 FSM FMs ODLs Structure VibrationAllowable misalignment 8 Develop Wavefront Sensors, Controllers
Chart: 10 Sparse -aperture Optics/Control aperture Optics/Control System (SOCS) Framework System (SOCS) Framework PSF PSF XX Analyze Optics Performance Requirements Analyze Optics Performance Requirements YY Determine Array Configuration Determine Array Configuration Z Determine Tolerable Beam Combining Errors Z Determine Tolerable Beam Combining Errors [ Design/Build Sub-Aperture Telescope [ Design/Build Sub-Aperture Telescope \ Design Relay Optics \ Design Relay Optics __ Develop Wavefront Sensors,Controllers Develop Wavefront Sensors,Controllers ^^ Design, Analyze, Build Structures Design, Analyze, Build Structures Track WFE Budget θr θr EE EE SR SR ACS ACS SNR SNR FOV FOV MTF MTF L L D D # of Ap ertur e # of Ap ertur e Piston Piston Tilt/Tip Tilt/Tip Pupil mapping Pupil mapping # R efl e ction # R efl e ction Ge o m etry Ge o m etry # Control Chann el # Control Chann el Beam Com biner Beam Com biner Assembly/Alignment Errors Assembly/Alignment Errors RRMMS WF Error Budget S WF Error Budget TTrreeee F ocal_1 F ocal_1 M=d/D M=d/D FSM FSM FMs FMs ODL s ODL s Structure Vibration Structure Vibration ]Design CCD System ]Design CCD System Beam Combininng Errors Beam Combininng Errors Sub Aperture RMS WFE Sub Aperture RMS WFE Optical Components Errors Optical Components Errors Residual Optics Design WFE Residual Optics Design WFE Allo w abl e mi s alignment Allo w abl e mi s alignment