OAJ Project status

The Observatorio Astrofísico de Javalambre (OAJ) is a scientific facility particularly conceived and constructed by CEFCA for carrying out large sky astronomical surveys. The OAJ mainly consists of two professional telescopes with large fields of view (FoV) and seeing-limited image quality all over their entire FoVs: the 2.5m Javalambre Survey Telescope, JST/T250, a large-etendue telescope with a FoV of 3 deg diameter, and the 80cm Javalambre Auxiliary Survey Telescope, JAST/T80, with a FoV of 2deg.
 Both telescopes are equipped with panoramic cameras, state-of-the-art, large format CCDs and unique sets of optical filters suited to survey the Universe in an unprecedented way all over the optical spectral range.

The OAJ Project started in 2010, comprising not only the design and construcción of the two above telescopes but of the whole civil work, related installations and infrastructures for the proper operation of the telescopes. This includes, among others, a seeing DIMM monitor, a 40cm telescope for robotic determination of the optical extinction curve, an all-sky extinction camera, a residence, three control rooms, laboratories and workshops, a data center, a 10.000-class clean room for AIV purposes, a coating vacuum chamber for mirror alluminization (the latter to be ready by end 2015), and all the general installations for the running of the observatory. It all is connected by underground tunnels. In 2014, the OAJ was finalized and declared Spanish ICTS (Infraestructura Científica y Técnica Singular) by the Spanish Ministry of Economy and Competitiveness. All infrastructures are interconnected by a network of underground galleries, of 2.5mx2.5m section, along which all pipes and services go.

The OAJ is managed and operated by CEFCA. In this sense, J-PLUS and J-PAS are the two first key surveys that are defined to be conducted at the OAJ in the period 2015-2022. The CEFCA data center, UPAD, with capacity for 6.1 PB of storage, 3.3 TB of RAM and 406 cores, complete the OAJ Project at the city of Teruel, allowing to process and storage the data gathered with the above surveys.

The Javalambre Survey Telescope (JST/T250) is an 250cm Ritchey Chrétien telescope with a large field of view of 3 deg diameter, particularly defined for carrying out large sky photometric surveys like J-PAS.

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The Javalambre Auxiliary Survey Telescope (JAST/T80) is an 80cm Ritchey Chrétien telescope with a large field of view of 2 deg diameter, particularly defined for carrying out large sky photometric surveys like J-PLUS.

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Roughly, the OAJ is composed of two buildings for the JST/T250 and JAST/T80 telescopes, a residence, a control building, a general services plant, a monitor building and an aluminizing plant.

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First light instruments are being designed to exploit the survey capabilities of the OAJ telescopes. In particular, a wide field camera has been developed for the JAST/T80, T80Cam, and another one is being developed for the JST/T250, JPCam.

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The Unit for Processing and Data Archiving (UPAD) is the responsible of data archiving and processing of the images collected at the OAJ.

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