The VISCACHA survey - I. Overview and first results - Maia, Francisco F. S; Kerber, Leandro de O; Barbuy, Beatriz Leonor Silveira; Hernandez-Jimenez, Jose A; Oliveira, Raphael A. P; Perez-Villegas, Angeles; Souza, Stefano O; Vieira, Rodrigo G (Monthly Notices of the Royal Astronomical Society, 2019)