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Authors: P. Ciliegi, A. La Camera, C. Arcidiacono, M. Bertero, P. Boccacci, E. Diolaiti, I. Foppiani, M. Lombini and L. Schreiber
Abstract: LINC-NIRVANA (LN) is a Fizeau interferometer that will provide coherent images in the near-IR combining the beams from the two Large Binocular Telescope (LBT) arms, by adopting a Multi-Conjugate Adaptive Optics system (MCAO) that allows for atmospheric turbulence compensation. We applied the software AIRY-LN for the simulation and the reconstruction of LN images in order to investigate the dependence of the image quality from the magnitude of the star used for the PSF extraction. A good knowledge of this dependence is a crucial point for the LN observations, especially for the extragalactic target where the presence of a bright psf-star within the LN field of view of 10×10 arcsec is not granted. Our results, although still preliminary, show that while from the morphological point of view the use of psf-star up to a magnitude of 18 is still acceptable, from the photometric point of view the use of psf-star fainter than Ks ∼ 16 mag could cause considerable problems.

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Posted by: andrea, on 10/14/2010, in category "2010"
Views: this article has been read 6955 times
Authors: M. Bertero, P. Boccacci, G. Desiderà, A. La Camera, M. Carbillet, and H. Lantéri
Abstract: The large binocular telescope (LBT), operating on the top of Mount Graham, Arizona, consists of two 8.4 m mirrors on the same mounting, with a distance of 14.4 m between their centers. First binocular light was achieved 6 March 2008 with the large binocular camera (LBC), consisting of two wide-field, highthroughput imaging cameras located at prime focus stations. Moreover, LBT will be equipped with a pair of 0.911 m adaptive secondary mirrors, each with 672 actuators[...]

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Posted by: andrea, on 1/12/2010, in category "2010"
Views: this article has been read 7528 times
Authors: M. Carbillet, G. Desiderà, E. Augier, A. La Camera, A. Riccardi, A. Boccaletti, L. Jolissaint, and D. Ab Kadir
Abstract: We present recent developments of the CAOS problem-solving environment (PSE), an IDL-based software tool complete of a global graphical interface, a general utilities library, and di erent specialized scienti c packages going from end-to-end and analytical simulations to image simulation/reconstruction, with specialization to given instruments.

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Posted by: andrea, on 10/15/2010, in category "2010"
Views: this article has been read 7027 times
Authors: Marcel Carbillet, Gabriele Desiderà, Evelyne Augier, Andrea La Camera, Armando Riccardi, Anthony Boccaletti, Laurent Jolissaint, Diyana Ab Kabir
Abstract: We present recent developments of the CAOS problem-solving environment (PSE), an IDL-based software tool whose original aim was to define and simulate as realistically as possible the behavior of a generic adaptive optics (AO) system —from the atmospheric propagation of light, to the sensing of the wave-front aberrations and the correction through a deformable mirror— but which results in a widely more general tool now. In fact, the different developments made through the last years result in a very versatile numerical tool com- plete of a global graphical interface (the CAOS Application Builder), a general utilities library (the CAOS Library), and different packages dedicated to a wide range of astronomical-optics-related scientific topics: the original package designed for end-to-end AO system simulations (the Software Package CAOS), an image sim- ulation/reconstruction package with interferometric capabilities (the Software Package AIRY), an extension of the latter specialized for the LBT instrument LINC-NIRVANA (the Software Package AIRY-LN), an ad hoc package dedicated to the VLT instrument SPHERE (the Software Package SPHERE), and an embedment of the analytical AO simulation code PAOLA (the Software Package PAOLAC).We present the status of the whole CAOS PSE, together with the most recent developments, and plans for the future of the overall tool.

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Posted by: andrea, on 10/15/2010, in category "2010"
Views: this article has been read 7230 times