Appendix A

Below, we give a list of acronyms.

Acronym Description
AC Across-scan (direction)
AF Astrometric field (CCDs)
AL Along-scan (direction)
BCRS Barycentric celestial reference system
BP Blue photometer
CCD Charge-coupled device
DPAC Data Processing and Analysis Consortium
DR1 Gaia Data Release 1
DR2 Gaia Data Release 2
DR3 Gaia Data Release 3
EDR3 Gaia Early Data Release 3
FoV Field of view
HEALPix Hierarchical equal-area iso-latitude pixelisation
HPM High proper motion
ICRS International celestial reference system
IGSL Initial Gaia source list
IPD Image parameter determination
LHS Revised Luyten half-second catalogue
RP Red photometer
RVS Radial velocity spectrometer
SM Sky mapper (CCDs)
XM Cross-matching

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