The complexities of ultracool atmospheres are best confronted by observations of ultracool dwarfs (UCDs) with well known physical properties (luminosity, mass...

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The solar core is the region where all the nuclear reactions take place and, therefore, where the energy is generated. Understanding the physics of these...

In this paper we present the test results of the qualification model (QM) of the LFI instrument, which is being developed as part of the ESA Planck satellite...

WEAVE is the new wide-field spectroscopy facility 1,2,3 for the prime focus of the William Herschel Telescope in La Palma, Spain. Its fibre positioner is...

We discuss the status of the calibration programme for CanariCam and related initiatives that aim to provide quality calibration facilities for users of the GTC...

We describe an ongoing effort to validate the estimated atmospheric parameters (Teff, log g, [Fe/H]) obtained from SDSS spectroscopy (R = 2000) and ugriz...

We propose to improve the calibration of the Wind momentum - Luminosity Relationship of hot stars at solar metallicity by adding new objects with well...

The ISO mission has shown the importance of establishing a reliable spectrophotometric calibration over the range of wavelengths covered by its multiple...