The Tarantula Survey employs three modes of the Fibre Large Array Multi-Element Spectrograph (FLAMES) instrument on the VLT: Medusa-Giraffe, ARGUS-Giraffe and UVES. Most of the Medusa observations were obtained over the period 2008 October to 2009 February. (2 data files).

In the frame of the EU funded ELT Design Study, a wavefront characterization campaign has been conducted at Paranal VLT Observatory in December 2007 involving concurrent measurements with DIMM, MASS, GSM, MOSP, LuSci and SCIDAR. The campaign goals and instrumentation are described and preliminary results are presented.

OSIRIS (Optical System for Imaging and low Resolution Integrated Spectroscopy) is the first light instrument of the Gran Telescopio Canarias (GTC). It provides a flexible and competitive tunable filter (TF). Since it is based on a Fabry-Perot interferometer working in a collimated beam, the TF transmission wavelength depends on the position of the

We present the preliminary design of the WEAVE next generation spectroscopy facility for the William Herschel Telescope (WHT), principally targeting optical ground-based follow up of upcoming ground-based (LOFAR) and spacebased (Gaia) surveys. WEAVE is a multi-object and multi-IFU facility utilizing a new 2 degree prime focus field of view at the

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Aims: We have identified several tens of extremely metal-poor star candidates from SDSS and LAMOST, which we follow up with the 4.2 m William Herschel Telescope (WHT) telescope to confirm their metallicity. Methods: We followed a robust two-step methodology. We first analyzed the SDSS and LAMOST spectra. A first set of stellar parameters was