New narrow-band images of NGC 4151, taken in excellent seeing conditions with the 4.2-m William Herschel Telescope are presented. These reveal a wealth of...
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PublicaciónThe complex narrow-line region in NGC 4151
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PublicaciónThe detection of the 18.7 micrometer /SIII/ line in M42
The importance of forbidden line radiation is considered, taking into account lines in the visible and the infrared range. The result of a theoretical study...
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PublicaciónThe Effect of Piston Errors on the Image Quality of Ground-Based Segmented Mirror Telescopes
The errors associated with a segmented primary mirror limit the image quality obtainable with those astronomical telescopes which employ them. It is necessary...
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PublicaciónThe European Solar Telescope
The European Solar Telescope (EST) is a project aimed at studying the magnetic connectivity of the solar atmosphere, from the deep photosphere to the upper...
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PublicaciónThe European Solar Telescope
The European Solar Telescope (EST) is a project to design, build and operate an European Solar 4-meter class telescope to be located in the Canary Islands, with...
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PublicaciónThe Gaia mission
Gaia is a cornerstone mission in the science programme of the EuropeanSpace Agency (ESA). The spacecraft construction was approved in 2006, following a study in...
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PublicaciónThe GCS Data Processing Kit
As part of the GTC Control System (GCS) a data processing package is being developed. We will describe the perfomance of the Data Processing Kit (DPK), using...
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PublicaciónThe Impact of Seismicity on High Angular Resolution Astronomy:. the Case of the Canary Islands
Seismicity induces ground vertical and horizontal displacements that could affect the image quality obtained by telescopes in a similar fashion than atmospheric...
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PublicaciónThe instrumental polarization of a Gregory-coude telescope
A theoretical model of the polarization properties of a Gregory-coude telescope is calculated to predict the behavior of the German Gregory-coude telescope...