Commonly used NICI acronyms:

• AOCB: Adaptive Optics Capture Buffer
• AOWFS: Adapative Optics Wavefront Sensor
• APD: Avalanche Photodiode (in AOWFS)
• DM: Deformable Mirror
• DW: Dichroic Wheel
• FOCS: Fiber Optic Calibration Source
• FPMW: Focal-plane mask wheel
• IC: Instrument Controller
• IS: Instrument Sequencer
• MEF: Multi-extension FITS
• NDFW: Neutral Density Filter Wheel
• OCS: Observatory Control System
• OIWFS: On-Instrument Wavefront Sensor (a.k.a. the NICI AOWFS)
• OT: Observing Tool
• OTR: Real-time Observing Tool
• PCM: Process Control & Monitor (screen of IC)
• PI: Pupil Imager
• PMW: Pupil Mask Wheel
• PWFS2: Peripheral Wavefront Sensor 2
• SMR: Spider Mask Rotator
• TE: Thermal Enclosure
• TTSM: Tip-Tilt steering mirror
• WFS: Wavefront Sensor