The authors present preliminary results of optical and infrared observations of Mk 421, during an outburst. Some of these observations are simultaneous in both...
Recent progress at the Very Large Telescope Interferometer
The ESO Very Large Telescope Interferometer (VLTI) is the first general-user interferometer that offers near- and mid-infrared long-baseline interferometric...
During the last years a mayor effort has been carried out both, in defining key parameters to quantify the quality of a site for astronomical observations, and...
Recent results in High Energy Astrophysics with MAGIC
Located at the Canary island of La Palma, MAGIC is the world-wide largest Imaging Atmospheric Cherenkov telescope. MAGIC-I has been in operation since 2004...
Recent Star Formation in Nearby Early-type Galaxies
Motivated by recent progress in the study of early-type galaxies owing to technological advances, the launch of new space telescopes, and large ground-based...