STUDY SUMMARY - IPMU

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<strong>SUMMARY</strong> REPORT WIDE FIELD FIBER-FED OPTICAL MULTI-OBJECT SPECTROMETER (WFMOS) Figure 3.14-1: Control Hierarchy Science Subaru Telescope PHSC Guide Stars Subaru TCS PHSC hexapod Instrument rotator Calibration lamps STARS Archive SOSS WFMOS Control System Observer Light: Science Guide Calibration Control signals Data WFMOS Data Handling and Pipeline System WFC + ADC Autoguider Metrology Detector Positioner Fibres Fiducial lamps Slit block 1 Slit block 2 Slit block 3 Positioner lamp 1 Positioner lamp 2 Positioner lamp 3 Spectrograph 1 Spectrograph 2 Spectrograph 3 Science Detector 1 Science Detector 2 Science Detector 3 Figure 3.14-2: Block Diagram. Subaru infrastructure is shown in green, Subaru-supplied components are shown in cyan, and WFMOS-supplied components are shown in yellow. 55
<strong>SUMMARY</strong> REPORT WIDE FIELD FIBER-FED OPTICAL MULTI-OBJECT SPECTROMETER (WFMOS) 3.15 Data Reduction The Data Reduction (DR) Subsystem comprises four basic sub-components: • A data handling system (DHS). • An infrastructure for running DR. • Quick-look data visualization. • Data reduction routines. The subsystem directly interfaces to the Detector Controller(s) (to whom it provides data storage facilities) and to the Software Control subsystem, which provides overall control and handles all external interfaces. The bulk data interface will be provided by Network Attached Storage (NAS) system; the data store will be directly available through mount points to the other systems. Control interfaces will be provided as Python wrappers; in this way, the other systems can be insulated from the underlying communication system. The underlying communications will be handled either by an ORB (if the design re-uses the Subaru SIMCAM software communications) or by a common message bus (if the Gemini Pipeline Reduction System - PRS communications are preferred). Communications with the Quick-look tools will be possible either by direct access to the NAS or via IVOA Spectral and Image access protocols, thereby allowing any VO-compliant tool (VOSpec, SPLAT, etc.) to be able to access the data. Figure 3.15-1: DR Subsystem Block Diagram and Interfacing 56
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STUDY SUMMARY - IPMU

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