Acronyms
The following list includes acronyms used on system level and shall be common to all documents.
Acronym | Meaning | Explanation | Used in / Link | |
|---|---|---|---|---|
A | ||||
AD | Applicable Document | Legally binding documents and reports | ||
AIV | Assembly, Integration and Verification | To be replaced by AIT | ||
AIT | Assembly, Integration and Test | |||
ANDES | ArmazoNes high Dispersion Echelle Spectroscopy | Name of the instrument | All documents | |
arcsec | Arc Second | |||
B | ||||
BOL | Beginning of Life | |||
C | ||||
CCD | Charged Coupled Device | Area detectors | ||
CCS | Central Control System | |||
CoG | Center of Gravity | |||
CR | Coudé-room | Part of the ELT | ||
CU | Calibration Unit | Subcomponent | ||
D | ||||
E | ||||
EH | Entrance Hall | |||
ELT | Extremely Large Telescope | |||
ESO | European Southern Observatory | |||
F | ||||
F2F | Fiber-To-Fiber link | In-fiber connection point | ||
FDR | Final Design Review | Milestone of the project, controlled by ESO | ||
FE I-IV | Front End I-IV | Pickup of the beam coming from the telescope. | ||
FP | Fabry-Pérot | Etalon, Interferometer, Resonator in Literature | ||
FSR | Free Spectral Range | Spectral range between two spectral features | ||
FTS | Fourier-Transform Spectrograph | |||
G | ||||
GPS | Global Positioning System | |||
H | ||||
HCL | Hollow-Cathode Lamps | Wavelength calibration lamps | CU | |
HIRES | High Resolution Spectrograph | Outdated name of the instrument /project -> ANDES | ||
I | ||||
IAA | Instrument Assembly Area at Armazones | |||
ICD | Interface Control Document | ESO-Standard, that is used to define Interfaces and their Responsibility | ||
IFU | Integral Field Unit | |||
ILS | Instrumental Line Shape | See Definitions below | ||
IP | Instrumental Profile | see also linespread function or ILS | ||
IR | Infrared | |||
J | ||||
K | ||||
L | ||||
LCS | Local Control System | |||
LCU | Local Control Unit | |||
LDP | Light Distribution Point | Connects, switches light sources to the OUP of the CU | ||
LGS | Laser Guide Star | |||
LUT | Look-Up table | |||
M | ||||
mas | Milli-arcseconds | |||
MS | Main Structure | |||
N | ||||
NCR | No-Collapse Requirement | |||
NGS | Natural Guide Star | |||
O | ||||
OM | Observing Mode | |||
OUP | Output Port | Fiber ports used in the CU → Optical Interface to the Fiber WP | ||
P | ||||
PA | Product Assurance | |||
PAE | Preliminary Acceptance Europe | ESO-controlled milestone of the project | ||
PCF | Photonic Crystall Fibre | Used in the Astrocomb for spectral broadening | ||
PD | Photodiode | |||
PDR | Preliminary Design Review | ESO-controlled milestone of the project | ||
PHL | Preliminary Hazard List | |||
PI | Principal Investigator | |||
PFS | PreFocal Station | |||
PT | Product Tree | |||
PTV | Peak To Valley | |||
Q | ||||
QA | Quality Assurance | |||
R | ||||
RBM | Rigid Body Motion | |||
RD | Reference Documents | background references only. | ||
rms | Root Mean Square | A statistical Value, see below | ||
RP | Resolving Power | lambda/deltaLambda | ||
S | ||||
SCP | Service Connection Point | |||
SE | Systems Engineer | |||
SoW | Statement of Work | |||
T | ||||
TBC | To be Confirmed | |||
TBD | To be Defined (frequently To be Discussed) | |||
TLR | Top Level Requirement | |||
TRL | Technical Readiness Level | see definitions | ||
TSE | Thermal Self Emission | |||
U | ||||
V | ||||
VIS | Visible Range of Light | (400 nm - 700 nm as defined by ISO Standards) | ||
W | ||||
WBS | Work Breakdown Structure | |||
WFS | WaveFront Sensor | |||
WLM | Wavelength Marker | frequency-stabilized Lasers, used in the CU to anchor the wavelength solution | ||
WP | Work Package | |||
X | ||||
Y | ||||
Z | ||||
Definitions
The following lists include definitions for terms to be used in the respective field.
ESO
General Terms
Telescope
Term | Explanation | Author |
|---|---|---|
Nasmyth-platform | Platforms on both sides of the ELT with optical interface to the Nasmyth-train. | |
Instrument
Requirements
Components
Optical
Electrical
Software
Data Reduction
Precision and Accuracy
Auxiliary
The TRL list is taken from industry. ESO definitions will be implemented soon.
TRL | Definition | Comment |
|---|---|---|
1 | Basic principles observed and reported | |
2 | Technology concept formulated | |
3 | Experimental proof of concept | |
4 | Technology validated in lab | |
5 | Technology validated in relevant environment | → Observatory on the mountain |
6 | Technology demonstrated in relevant environment | |
7 | System prototype demonstration in operational environment | |
8 | System complete and qualified | |
9 | Actual system proven in operational environment |