Optical and near-infrared day-side emission from exoplanets
Observations of the secondary eclipse of an exoplanet, the moment the planet moves behind its star, allow us measure the radiation emitted by the exoplanet...
Zernike circle polynomials are in widespread use for wavefront analysis in optical design and testing. We discuss why we use these polynomials in optics, when...
Organic materials and ices in the outer solar system
The composition of the outer solar system is of particular interest because it holds the key to understanding the chemical evolution of the Solar System...
The standard scientific operations of the instrument OSIRIS will start at the GTC by mid March. The first tests of the instrument once mounted on the telescope...
Perspectives for speckle cameras at the GTC and WHT
I will present a short introduction to speckle imaging and the so-called speckle holography technique. Subsequently, I will present results of speckle...
Planning the WHT future: the WEAVE wide-field massive-multiplex spectrograph
The vision for the use of the WHT in the coming decade is taking shape. A key element is the construction and deployment of WEAVE, a wide-field massive...
Precipitable water vapour at the Roque de los Muchachos Observatory from GPS measurements
There are many parameters accounting for the quality of an astronomical site, namely seeing, cloud cover, ground winds, high-altitude winds, etc. The water...
Precipitable Water Vapour measurements and forecasting at the Observatories.
The precipitable water vapour (PWV) is the main absorber in the Earth's atmosphere at infrared (IR) and microwave wavelengths. In the last years, the IAC Sky...
Luminous high-redshift radio galaxies (HzRGs) are associated with the most massive known galaxies in the early Universe. These galaxies have the properties...