TMT Construction Proposal - Thirty Meter Telescope

8.3.3.2 Requirements ...............................................................................................................99
8.3.3.3 Conceptual Design Description ..................................................................................100
8.3.3.4 Development Tasks....................................................................................................102
8.3.3.5 Work Plan ...................................................................................................................102
8.3.4 Tertiary Mirror Assembly .....................................................................................................103
8.3.4.1 Overview.....................................................................................................................103
8.3.4.2 Requirements .............................................................................................................103
8.3.4.3 Conceptual Design Description and Options..............................................................104
8.3.4.4 Development Tasks....................................................................................................105
8.3.4.5 Work Plan ...................................................................................................................106
8.3.5 Telescope Controls and Software .......................................................................................106
8.3.5.1 Overview.....................................................................................................................106
8.3.5.2 Telescope Control System .........................................................................................110
8.3.5.3 M1 Control System .....................................................................................................111
8.3.5.4 Mount Control System ................................................................................................121
8.3.5.5 Test Instrument Control ..............................................................................................122
8.3.5.6 Telescope Safety System...........................................................................................122
8.3.5.7 Engineering Sensors ..................................................................................................122
8.3.5.8 Commissioning Acquisition and Guiding System .......................................................123
8.3.5.9 Power, Lighting, and Grounding .................................................................................123
8.3.6 Optics Alignment and phasing.............................................................................................124
8.3.6.1 Overview.....................................................................................................................124
8.3.6.2 Initial alignment by surveying .....................................................................................124
8.3.6.3 Prime focus camera....................................................................................................124
8.3.6.4 Alignment and Phasing System..................................................................................125
8.3.6.5 Global Metrology System............................................................................................130
8.3.7 Optics Installation and Maintenance Equipment.................................................................131
8.3.7.1 Overview.....................................................................................................................131
8.3.7.2 Requirements .............................................................................................................132
8.3.7.3 Conceptual Design Description and Options..............................................................132
8.3.7.4 Development Tasks....................................................................................................133
8.3.7.5 Work Plan ...................................................................................................................133
8.4 Observatory software...............................................................................................................134
8.4.1 Overview..............................................................................................................................134
8.4.2 Requirements ......................................................................................................................134
8.4.3 Conceptual design...............................................................................................................135
8.4.4 Development tasks..............................................................................................................136
8.4.5 Work plan ............................................................................................................................137
8.5 Early Light Adaptive Optics......................................................................................................138
8.5.1 System Architecture ............................................................................................................138
8.5.1.1 Overview.....................................................................................................................138
8.5.1.2 Top-Level and Derived Architectural Requirements...................................................139
8.5.1.3 Architecture Design Description .................................................................................139
8.5.1.4 Key Development Tasks.............................................................................................141
8.5.1.5 Work Plan ...................................................................................................................141
8.5.2 Early light AO systems ........................................................................................................142
8.5.2.1 NFIRAOS....................................................................................................................142
8.5.2.2 Laser Guide Star Facility System (LGSF) ..................................................................145
8.5.2.3 Adaptive Optics Sequencer ........................................................................................149
8.5.3 Early Light AO Components................................................................................................151
8.5.3.1 Deformable mirrors .....................................................................................................151
8.5.3.2 LGS WFS detectors....................................................................................................152
8.5.3.3 NIR NGS WFS detectors............................................................................................153
8.5.3.4 Real Time Controller...................................................................................................154
8.5.3.5 Guidestar lasers..........................................................................................................156
8.6 Early Light Science Instruments ..............................................................................................158
8.6.1 Introduction..........................................................................................................................158
TMT Construction Proposal
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