We analysed recent K2 data of the short-period eclipsing binary system HW Vir, which consists of a hot subdwarf-B type primary with an M-dwarf companion. We determined the mid-times of eclipses, calculated O-C diagrams, and an average shift of the secondary minimum. Our results show that the orbital period is stable within the errors over the

EMIR is the near-infrared wide-field camera and multi-slit spectrograph being built for Gran Telescopio Canarias. We present here the work being done on its data processing pipeline. PyEmir is based on Python and it will process automatically data taken in both imaging and spectroscopy mode. PyEmir is begin developed by the UCM Group of

OTELO is a survey of emission-line objects that will be carried out using tunable filters with OSIRIS at the GTC. The survey will have a deep impact on extragalactic astronomy due to its large area and its high sensitivity. In this paper we present new estimations of the number of QSOs that are expected to be found with this unique survey.

Results are presented on a non-LTE analysis of high-resolution Cassegrain echelle CCD spectra of the four most luminous stars in the NGC 346 cluster in the SMC, obtained with the ESO 3.6-m telescope, making it possible to estimate the age of the NGC 346 cluster and to trace its evolution. The results yield the effective temperatures, gravities

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