ATST Instrument Interface Overview Rob Hubbard Freiburg – October 2008

Instrument Systems Organization Polarimetry Analysis and Calibration (GOS) Synchro Bus Instrument Control System Instrument Lab Facility Thermal Control Instrument Lab Facility Instruments VBI ViSP NIRSP VTF Cameras Instrument Systems Überinstrument

Internal Interfaces Instrument Systems One or the other, not both Polarimetry Analysis and Calibration (GOS) Synchro Bus Instrument Control System One or the other, not both Instrument Lab Facility Thermal Control We don’t need both an interface between the ICS and the Cameras, and between the instruments and cameras (unless the latter is mechanical). We need to decide how much the ICS is controlling instrument components. Note that there are some “hidden interfaces”. For example the Instrument Control System does communicate with the GOS, but does so via the TCS. Instrument Lab Facility Instruments VBI ViSP NIRSP VTF Cameras Instrument Systems Überinstrument

External Interfaces Instruments to the Coudé Feed Optics This describes the beam which is being supplied to the instruments. Instruments to Telescope Mount Assembly The TMA includes the coudé rotator This is primarily a mechanical interface

Mechanical Interface

Mechanical Interface (Continued)

Mechanical Interface (Continued)

Mechanical Interface (Continued)

Coudé Thermal Interface

Other Relevant Specifications Interconnects and Services Power, coolant, computer networks, control cables (copper and fiber), compressed air, nitrogen (gas and liquid), vacuum Specified in SPEC-0063 The lists of services provided with capacities The routing of services Location of terminus and connection specification Common Services (Software)

Instrument Interface Overview END

Instrument Control System Interfaces – First Option Scripts OCS 4.2 Users ICD 4.2-4.3 ICD 4.2-4.4 ICD 3.1-4-4.2 DHS 4.3 ICS 3.1.4 TCS 4.4 ICD 3.1.4-4.3 ICD 3.1.4-4.4 ICD 3.1.4-3.2 ICD 3.1.4-3.3 ICD 3.1.4-3.4 ICD 3.1.4-3.5 ICD 3.1.2-3.1.4 ICD 3.1.1-4.4 BDT 4.3.1 VBI 3.2 ViSP 3.3 NIRSP 3.4 VTF 3.5 SynchroBus 3.1.2 GOS 3.1.1 ICD 3.2-3.6 ICD 3.3-3.6 ICD 3.4-3.6 ICD 3.5-3.6 ICD 3.1.1-3.1.2 Cameras 3.6 ICD 3.6-4.3 ICD 3.1.2-3.6 SynchroBus Data LAN

Instrument Control System Interfaces – Option 2 Scripts OCS 4.2 Users ICD 4.2-4.3 ICD 4.2-4.4 ICD 3.1-4-4.2 DHS 4.3 ICS 3.1.4 TCS 4.4 GOS 3.1.1 ICD 3.1.4-4.3 ICD 3.1.4-4.4 ICD 3.1.1-4.4 ICD 3.1.4-3.2 ICD 3.1.4-3.3 ICD 3.1.4-3.4 ICD 3.1.4-3.5 ICD 3.1.4-3.6 ICD 3.1.2-3.1.4 BDT 4.3.1 VBI 3.2 ViSP 3.3 NIRSP 3.4 VTF 3.5 Cameras 3.6 SynchroBus 3.1.2 ICD 3.1.1-3.1.2 Data LAN ICD 3.6-4.3 SynchroBus ICD 3.1.2-3.6