This document employs several abbreviations and acronyms to refer concisely to an item, after it has been introduced. The following list is aimed to help the reader in recalling the extended meaning of each short expression:

% List of acronyms included, based on PDR documentation package. Most of the abbreviations used in
% the PDR document package are included.
% There are several acronyms that have multiple meanings. Uncomment/Comment the one that you need.
% For an acronym inside another acronym, e.g. MICADO = Multi-AO ..., use
% \acro{MICADO}{Multi-\acs{AO} ...} and label the definition of AO using
% \acro{AO}{Adaptive Optics}\label{acro:AO}.
% Otherwise, warnings are raised.
\begin{acronym}[MICADO123]
    \acro{ACU}{Astrometric Calibration Unit}
    \acro{AD}{Applicable Documents}
    \acro{ADC}{Atmospheric Dispersion Corrector}
    \acro{ADU}{Analog-to-Digital Unit}
    \acro{AFM}{Active Folding Mirror}
    \acro{A-IMA}{Astrometric Imaging}
    \acro{AIV}{Assembly, Integration, Verification}
    \acro{AKF}{Auto-collimation Telescope}
    \acro{ANF}{Antofagasta}
    \acro{AO}{Adaptive Optics}\label{acro:AO}
    \acro{AOWFC}{Adaptive Optics Wavefront-sensor Camera}
    \acro{API}{Application Programming Interface}
    \acro{AR}{Anti Reflection}
    \acro{AT}{Alignment Telescope}
    \acro{AWG}{Astrometry Working Group}
    % \acro{BB}{Blackbody}
    \acro{BB}{Broad-band (filter}
    \acro{CA}{Cryostat Assembly}
    \acro{CAD}{Computer Aided Design}
    \acro{CAE}{Computer Aided Engineering}
    % \acro{CAM}{Camera optics}
    \acro{CAM}{Cold Astrometric Mask}
    \acro{CCD}{Charge Coupled Device}
    \acro{CDS}{Correlated Double Sampling}
    \acro{CIDL}{Configuration Item Data List}
    \acro{C-IMA}{Coronagraphic Imaging}
    \acro{CLIP}{C Library for Image Processing}
    \acro{CMMS}{Computerized Maintenance Management System}
    \acro{CMP}{Chemical Mechanical Polishing}
    \acro{CMS}{Cabinet Management System}
    \acro{COG}{Center of Gravity}
    \acro{COI}{Cold Optics Instrument}
    \acro{COL}{Collimator}
    \acro{COLR}{Collimator Reference Plate}
    \acro{Co-Pi}{Co-Principal Investigator}
    \acro{COS}{Coordinate System}
    \acro{COTS}{Component Of The Shelf}
    \acro{CPL}{Common Pipeline Library}
    \acro{CRE}{Change Request}
    \acro{CS}{Coordinate System}
    \acro{CTE}{Coefficient of Thermal Expansion}
    \acro{CWM}{Central Wheel Mechanism}
    \acro{DB}{Database}
    \acro{DCS}{Detector Control System}
    \acro{DD}{Deliverable Document}
    \acro{DDF}{Design Definition File}
    \acro{DEC}{Declination}
    \acro{DFS}{Data Flow Subsystem}
    \acro{DICB}{Data Interface Control Board}
    \acro{DIT}{Detector Integration Time}
    \acro{DJF}{Design Justification File}
    \acro{DM}{Deformable Mirror}
    \acro{DPS}{Data Processing Subsystem}
    % \acro{DPS}{Detector Positioning System}
    \acro{DRD}{Document Requirements Definition}
    \acro{DR}{De-Rotator}
    \acro{DRLS}{Data Reduction Library Specification document}
    \acro{DRS}{Data Reduction System}
    \acro{ECSS}{European Cooperation for Space Standardization}
    \acro{EH}{Entrance Hall}
    \acro{ELT}{Extremely Large Telescope}\label{acro:ELT}
    \acro{EMC}{Electromagnetic Compatibility}
    \acro{ESO}{European Southern Observatory}
    \acro{ETC}{Exposure Time Calculator}
    \acro{EUV}{Extreme Ultraviolet}
    \acro{FCU}{Flat field and spectral Calibration Unit}
    \acro{FCS}{Function Control Software}
    \acro{FDR}{Final Design Review}
    \acro{FEA}{Finite Element Analysis}
    \acro{FEM}{Finite Element Model}
    \acro{FITS}{Flexible Image Transport System}
    \acro{FMECA}{Failure Mode Effect and Criticality Analysis}
    \acro{FOV}{Field Of View}
    \acro{FP}{Focal Plane}
    \acro{FPA}{Focal Plane Array}
    \acro{FPM}{Focal Plane Mechanism}
    \acro{FPP}{Focal Plane Mosaic}
    \acro{FTE}{Full Time Equivalent (year)}
    \acro{FTS}{Fourier Transform Spectrograph}
    \acro{FWC}{Full Well Capactiy}
    \acro{FWM}{Filter Wheel Mechanism}
    \acro{FWHM}{Full Width at Half Maximum}
    \acro{GD}{Green Donut}
    % \acro{GCS}{General Command Set}
    \acro{GCS}{Global Coordinate System}
    \acro{GDS}{Green Donut Support structure}
    \acro{GLAO}{Ground Layer Adaptive Optics}
    \acro{GMT}{Giant Magellan Telescope}
    \acro{GSE}{Global Support Equipment}
    \acro{GTO}{Guaranteed Time Observations}
    \acro{GUI}{Graphical User Interface}
    \acro{GUID}{Globally Unique Identifier}
    \acro{HCI}{High Contrast Imaging}
    \acro{HDRL}{High-level Data Reduction Library}
    \acro{HDU}{Header-Data Unit}
    \acro{HMI}{Human Machine Interface}
    \acro{HRI}{High Resolution Imager}
    \acro{HRTC}{Hard Real Time Computer}
    \acro{HTRA}{High Time Resolution Astrophysics}
    \acro{IAA}{Instrument Assembly Area}
    \acro{ICD}{Interface Control Document}
    \acro{ICS}{Instrument Control System}
    \acro{IF}{Interface}
    \acro{ILS}{Interlock System}
    \acro{INS}{Instrumentation Software}
    \acro{INT}{Isaac Newton Telescope}
    \acro{IRM}{Integration Readiness Meeting}
    \acro{IS}{Integrating Sphere}
    \acro{ISDD}{Instrument Software Design Description}
    \acro{ISFS}{Instrument Software Functional Specification}
    \acro{ISURS}{Instrument Software User Requirement Specification}
    \acro{JWST}{James Webb Space Telescope}
    \acro{KM}{Key Milestone}
    \acro{KOM}{Kick-Off Meeting}
    \acro{LESIA}{Laboratoire d'Etudes Spatiales et Instrumentations pour l'Astrophysique}
    \acro{LOR}{Low Order Reference \acs{WFS}}
    \acro{LoS}{Line of Sight}
    \acro{LTAO}{Laser Tomography Adaptive Optics}
    \acro{LRI}{Low Resolution Imager}
    \acro{LRU}{Line Replacement Unit}
    \acro{LUT}{Look Up Table}
    \acro{MandM}[M\&M]{\acs{MAORY} and \acs{MICADO} configuration}
    \acro{MAIT}{Manufacture, Assembly, Integration, Test}
    \acro{MAORY}{Multi-conjugate Adaptive Optics RelaY for the \acs{ELT}}\label{acro:MAORY}
    \acro{MBS}{Main Bench Structure}
    \acro{MCA}{\acs{MICADO} Calibration Assembly}\label{acro:MCA}
    \acro{MCAO}{Multi Conjugate Adaptive Optics}
    \acro{MCD}{\acs{MICADO}}
    \acro{MCU}{Movable source Calibration Unit}
    \acro{MDU}{\acs{MCA} Deployment Unit}
    \acro{MICADO}{Multi-\acs{AO} Imaging CamerA for Deep Observations}\label{acro:MICADO}
    \acro{MMA}{\acs{MICADO} \& \acs{MAORY} Astrometry}
    \acro{MPE}{Max-Planck-Institut für extraterrestrische Physik}
    \acro{MPIA}{Max-Planck-Institut für Astronomie}
    \acro{MRF}{Magneto Rheological Finishing}
    \acro{MS}{Maintenance software}
    \acro{MSE}{Mechanical Support Equipment}
    \acro{MSM}{Main Selection Mechanism}
    \acro{MTBF}{Mean Time Between Failure}
    \acro{N/A}{Not Applicable}
    \acro{NA}{Numerical Aperture}
    \acro{NB}{Narrow-band (filter)}
    \acro{NCPA}{Non Common Path Aberration}
    \acro{NGC}{New Generation Detector Controller}
    \acro{NGS}{Natural Guide Star}
    \acro{NIR}{Near Infrared}
    \acro{NOVA}{Nederlandse Onderzoekschool voor Astronomie}
    \acro{OAPD}{Osservatorio Astronomico di Padova}
    \acro{OB}{Observation Block}
    \acro{OCD}{Operational Concept Description}
    \acro{OCS}{Observation Coordination Software}
    \acro{OD}{Optical Density}
    \acro{OLDB}{Online Database}
    \acro{OoM}{Order of Magnitude}
    \acro{OpcUA}{OPC Unified Architecture}
    \acro{OPD}{Optical Path Difference}
    \acro{OPL}{Optical Path Length}
    \acro{OSE}{Optical Support Equipment}
    \acro{OSS}{Observer Support Software}
    \acro{PA}{Product Assurance}
    \acro{PAC}{Preliminary Acceptance in Chile}
    \acro{PAE}{Preliminary Acceptance in Europe}
    \acro{PAO}{Preliminary Acceptance at the Observatory}
    \acro{PA/QE}{Product Assurance / Quality Assurance}
    \acro{PAP}{Product Assurance Plan}
    \acro{PDM}{Product Data Managment}
    \acro{PDR}{Preliminary Design Review}
    \acro{PFS}{Pre-Focal Station}
    \acro{PI}{Principal Investigator}
    \acro{PIM}{Pupil Imager}
    \acro{PLC}{Programmable Logic Controller}
    \acro{PMP}{Project Management Plan}
    \acro{POA}{Paranal Or Armazones}
    \acro{ppFPA}{Partially Populated Focal Plane Array}
    \acro{PreCADO}{Observations Preparation Software System}
    \acro{PRR}{Preliminary Requirements Review}
    \acro{PS}{Plate Scale}
    \acro{PSF}{Point Spread Function}\label{acro:PSF}
    \acro{PSF-R}{\acs{PSF} Reconstruction}
    \acro{PTP}{Precision Time Protocol}
    \acro{PTV}{Peak To Valley}
    \acro{PV}{Peak to Valley}
    \acro{PWFS}{Pyramid Wavefront Sensor}
    \acro{PWM}{Pupil Wheel Mechanism}
    \acro{RA}{Right Ascension}
    \acro{RAM}{Reliability, Availability, Maintainability}
    \acro{RAMS}{Reliability, Availability, Maintainability, Safety}
    \acro{RD}{Reference Documents}
    \acro{RFW}{Request For Waiver}
    \acro{RMS}{Root Mean Square}
    \acro{RO}{Relay Optic}
    \acro{RON}{Read Out Noise}
    \acro{RRR}{Read-Reset-Read}
    \acro{RSS}{Root Sum Square}
    \acro{RTC}{Real Time Computer}
    \acro{RTD}{Real Time Display}
    \acro{SAM}{Sparse Aperture Mask}
    \acro{SCAO}{Single Conjugate Adaptive Optics}\label{acro:SCAO}
    \acro{SCL}{Santiago de Chile}
    \acro{SCU}{\acs{SCAO} Calibration Unit}
    \acro{SCP}{Service Connection Point}
    \acro{SE}{System Engineering}
    \acro{SED}{Spectral Energy Distribution}
    \acro{SFP}{Scientific Focal Plane}
    \acro{S-IMA}{Standard Imaging}
    \acro{SimCADO}{Instrument Data Simulator for \acs{MICADO}}
    \acro{SNR}{Signal to Noise Ratio}
    \acro{SOW}{Statement Of Work}
    \acro{SPE}{Spectroscopy}
    \acro{SR}{Strehl Ratio}
    \acro{SRTC}{Soft Real Time Computer}
    \acro{SSO}{Solar System Object}
    \acro{ST}{Support Structure}
    \acro{SV}{Science Verification}
    \acro{SW}{Software}
    \acro{T-AWG}{Taskforce Astrometry Working Group}
    \acro{TBC}{To Be Confirmed}
    \acro{TBD}{To Be Defined}
    \acro{TBW}{To Be Written}
    \acro{TCS}{Telescope Control Software}
    \acro{TDCS}{(Technical) Detector Control Software}
    \acro{TLI}{Threshold Limited Integration}
    \acro{TMA}{Three Mirror Anastigmat}
    \acro{TMT}{Thirty Meter Telescope}
    \acro{TN}{Technical Note}
    \acro{TRL}{Technology Readiness Level}
    \acro{TRM}{Test Readiness Meeting}
    \acro{TS}{Technical Specification}
    \acro{TSS}{Top Support Structure}
    \acro{TT}{Tip-Tilt}
    \acro{USM}{Universitäts-Sternwarte München}
    \acro{USP}{User defined Polarizing Surface}
    \acro{UV}{Ultraviolet}
    \acro{VV}[V\&V]{Validation and Verification}
    \acro{VIS}{Visible light}
    \acro{VLT}{Very Large Telescope}
    \acro{WAM}{Warm Astrometric Mask}
    \acro{WBS}{Work Breakdown Structure}
    \acro{WFE}{Wavefront Error}
    \acro{WFS}{Wave Front Sensor}\label{acro:WFS}
    \acro{WFRTC}{Wavefront Real Time Computer}\label{acro:WFRTC}
    \acro{WHT}{William Herschel Telescope}
    \acro{WP}{Work Package}
    \acro{X4}{MPE integration hall}
\end{acronym}