The use of long-slit spectroscopy at high spectral and spatial resolution has made it possible to measure gradients of gaseous excitation and also velocity...

Images of the coma through continuum filters during EPOXI fly-by show that the comet's periodic activity is dominated by two active regions. They produce dust...

During the mid 1990s, extensive archaeoastronomical fieldwork was performed in the island of Gran Canaria, which is the richest of the Canaries from the...

Not Available

Under a contract with the GRANTECAN, the Commissioning Instrument is a project developed by a team of Mexican scientists and engineers from the Instrumentation...

A project to build a large telescope at the Spanish Observatorio del Roque de los Muchachos (ORM), in the island of La Palma, has been underway for several...

A project to build a large telescope at the Spanish Observatorio del Roque de los Muchachos (ORM), in the island of La Palma, has been underway for several...

First light of the Gran Telescopio Canarias (GTC) is reviewed by Francisco Sánchez Martínez, encourager of such an endeavour which is today a reality.

The conceptual design of the GTC optical system was completed in summer of 1997. It will be a Richey Cretien type telescope with a flat tertiary mirror to feed...