Subsystem

TMT Observatory system is composed of many subsystems. The subsystems that are known participants in the TMT Software System are predefined and the list is covered under the Subsystem enumeration. They are identified using an abbreviation typically of 3 or 4 letters.

Susbsystem values are used to construct Prefix and are used in communication vehicles such as Commands, Events and States.

List of Subsystems

Abbreviation	Susbsystem name
AOESW	AO Executive Software
APS	Alignment and Phasing System
CIS	Communications and Information Systems
CLN	Mirror Cleaning System
CRYO	Cryogenic Cooling System
CSW	Common Software
DMS	Data Management System
DPS	Data Processing System
ESEN	Engineering Sensor System
ESW	Executive Software System
FMCS	Facility Management Control System
GMS	Global Metrology System Controls
IRIS	InfraRed Imaging Spectrometer
LGSF	Lasert Guide Star Facility
M1CS	M1 Control System
MODHIS	Multi-Object Diffraction-limited High-resolution Infrared Spectrograph
NFIRAOS	Narrow Field Infrared AO System
NSCU	NFIRAOS Science Calibration Unit
OSS	Observatory Safety System
PFCS	Prime Focus Camera Controls
PSFR	NFIRAOS AO PSF Reconstructor
REFR	Refrigeration Control System
RTC	NFIRAOS Real-time Controller
RPG	NFIRAOS AO Reconstructor Parameter Generator
SCMS	Site Conditions Monitoring System
SOSS	Science Operations Support System
TCS	Telescope Control System
WFOS	Wide Field Optical Spectrometer
Container	Container subsystem

Usage Examples

The usage examples can be found in Events, Commands, States