UT1
Coordinated Universal Time One: A more modern version of GMT.
Effectively, there is currently little difference between UT1 and GMT
WCS
World Coordinate System: The standard translation format for plate
location to sky location translation
WDS
Washington Double Star Catalogue
WISE
Wide-field Infrared Survey Explorer: An infrared space-borne
telescope
Z
Cosmological redshift: The ratio between the wavelengths of a spectral
line
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Acronyms