Gran Telescopio Canarias: a 10-m telescope for the ORM
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...
Gran Telescopio Canarias: current status of its optical design and optomechanical support system
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...
The Grain Telescopio CANARIAS (GTC) is a high performance 10-m class telescope which is being built by the IAC (Instituto de Astrofisica de Canarias). It will...
GRANCAIN: the first light infrared camera for the adaptive optics of GTC: optical and mechanical design status
The Gran Telescopio de Canarias Adaptive Optic System (GTCAO) is designed to provide nearly diffraction-limited images to GTC. GRANCAIN (GRAN CAmara INfrarroja)...
We report the detection of a bisymmetric nuclear spiral structure in the spiral galaxy NGC 5248. The two red spiral arms can be followed for about 3 arcsec...
We have obtained ultra-high quality spectra (R=180,000; S/N>300) with unprecedented wavelength coverage (4400 to 7400 Å) for a number of stars covering most of...
Granulation in active regions as compared to quiet regions
A comparative study of the statistical properties of granulation in active and quiet regions is performed. The analysis is based on a high-resolution time...