VizieR Online Data Catalog Optical ident. and redshifts of Planck SZ sources (Planck+, 2016)

This article is a companion paper to the Planck catalogue of SZ sources (PSZ1) published in Planck Collaboration XXIX (2014, Cat. J/A+A/581/A14). It contains the results of approximately three years of observations with telescopes at the Canary Islands observatories (IAC80, NOT, INT, TNG, WHT, and GTC), as part of the general optical follow-up programme undertaken by the Planck Collaboration. (2 data files).