°	degree
Å	angstrom (1x10-10 meter)
A	ampere
ADC	Analog to Digital Converter
ASIC	Application Specific Integrated Circuit
C	Centigrade
CCD	Charge Coupled Device
CCE	Camera Control Electronics
CHA	Camera Head Assembly
COFO	Compressor / Formatter ASIC
DCC	Data Compression Chip (lossless)
DCT	Discrete Cosine Transform ASIC
DN	Data Number
e-	electron
EFC	Engineering Flight Computer
EFL	Effective Focal Length
EGSE	Electronic Ground Support Equipment (same as GSE)
EM	Engineering Model
ETL	Environmental Test Laboratory
FM	Flight Model
GS	Gain State
GSE	Ground Support Equipment (same as EGSE)
ID	identification
IDL	Interactive Data Language
IOM	Interoffice Memorandum
IR	infrared
ISS	Imaging Science Subsystem
JPL	Jet Propulsion Laboratory
KSC	Kennedy Space Center
LSB	Least Significant Bit(s)
LED	Light Emitting Diode
m	meter
MDE	Mechanical Drive Electronics
MEA	Main Electronics Assembly
micron	1x10-6 meters
MIPL	Multi-Image Processing Laboratory
mm	millimeter (1x10-3 meter)
msec	millisecond (1x10-3 second)
MTF	Modulation Transfer Function
nm	nanometer (1x10-9 meter)
NAC	Narrow Angle Camera
NLS	No Level Shift
PCV	Parallel Clock Voltage
picoamps	1x10-12 amperes
Pixel	Picture Element
PHSF	Payload Hazardous Servicing Facility
PRF	Point Response Function
PSE	Power Supply Electronics
QE	Quantum Efficiency (of the CCD)
rad	radian(s)
RBI	Residual Bulk Image
rms	root mean square
RSP	Remote Sensing Pallet
RTIU	Remote Terminal Interface Unit
SAF	Spacecraft Assembly Facility
SHE	Sensor Head Electronics
sr	steradian (unit solid angle)
SUM	Summation Mode
T/V	Thermal Vacuum (testing)
U/V	Ultra Violet
VIS	Visible
VO	Video Offset
W	watt
WAC	Wide Angle Camera