The second release of the Large Quasar Astrometric Catalog (LQAC-2)J. Souchay, A. H. Andrei, C. Barache, S. Bouquillon, D. Suchet, F. Taris and R. PeraltaA&A, 537 (2012) A99DOI: https://doi.org/10.1051/0004-6361/201117954