A wide-field survey telescope of 2.55 m aperture, also known as the JST/T250, opened in 2015 at the Observatorio Astrofísico de Javalambre in Teruel, Spain. It conducts multi-filter photometric surveys of the sky in conjunction with the 0.83-m Javalambre Auxiliary Survey Telescope (JAST/T80) on the same site. The J-PAS survey (Javalambre Physics of the Accelerating Universe Astrophysical Survey) uses a set of 54 narrow-band filters and two broad-band filters on the 2.5-m telescope, while J-PLUS (Javalambre Photometric Local Universe Survey) uses 12 broad- and narrow-band filters on the 0.8-m telescope. A twin of the 0.8-m is installed at the Cerro Tololo Inter-American Observatory in Chile to survey the southern sky.
http://oajweb.cefca.es/telescopes/jst-t250 Web page for the Javalambre Survey Telescope.
http://oajweb.cefca.es/telescopes/jast-t80 Web page for the Javalambre Auxiliary Survey Telescope.