Volume 45 number 1 (2017)
(Abstract only) The Observatorio Astrofísico de Javalambre (OAJ) is a new astronomical facility located in mainland Spain. This observatory is equipped with telescopes with large field of view and a unique filter system. The first two surveys to be carried out at the OAJ are the Javalambre Photometry of the Local Universe Survey (J-PLUS) and the Javalambre Physics of the accelerating universe Astrophysical Survey (J-PAS), devoted to the study of the star formation in the local universe and the expansion of the universe through baryonic acoustic oscillations. I introduce the OAJ and its instrumentation but also the potential for the study of variable sources (both within the J-PLUS and J-PAS projects and through “open time” projects). Finally, I stress the use of APASS for the calibration of our instruments.