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 years. The Gran Telescopio Canarias (GTC) project has thus been granted approval in February this year, with an allocation of 51% of the budget. Current activities of the telescope project are

First results of the inversion of Stokes I and V profiles from plage regions near disk center are presented. Both low and high spatial resolution spectra of Fe I 6301.5 and Fe I 6302.5 A obtained with the Advanced Stokes Polarimeter (ASP) have been considered for analysis. The thin flux-tube approximation, implemented in an LTE inversion code based

EN ESTA TESIS SE HA ANALIZADO LA CINEMATICA DE LAS REGIONES HII PERTENECIENTES AL AREA CENTRAL DE LA GALAXIA IRREGULAR GIGANTE NGC4449, MEDIANTE OBSERVACIONES REALIZADAS EN EL TELESCOPIO WILLIAM HERSCHEL DEL OBSERVATORIO DEL ROQUE DE LOS MUCHACHOS CON EL INTERFEROMETRO FABRY-PEROT TAURUS-II EN LAS LINEAS DE HALFA Y (OIII) LANDA5006.8 .EL OBJETIVO

Within the preliminary developments related to the Gran Telescopio Canarias, a test rig is being designed for the active control of the support system of the segmented primary mirror. The construction of this test rig will be divided in two phases: the first one will basically consist in the implementation and testing of a displacement sensor

DENTRO DEL AMPLIO EPIGRAFE "ALTA RESOLUCION ESPACIAL" SE ENGLOBAN DIVERSOS ESTUDIOS TEORICOS Y SEMIEMPIRICOS QUE VAN DESDE LA DESCRIPCION Y ANALISIS DE LA TURBULENCIA ATMOSFERICA Y SUS EFECTOS SOBRE IMAGENES ASTRONOMICAS, HASTA EL PROCESO DE FORMACION DE IMAGEN A TRAVES DE SISTEMAS OPTICOS. LAS LLAMADAS TECNICAS DE ALTA RESOLUCION ESPACIAL TIENEN

IAUC 6587 available at Central Bureau for Astronomical Telegrams.