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19 results on '"Aller Carpentier, E."'

2. Laboratory comparison of coronagraphic concepts under dynamical seeing and high-order adaptive optics correction

Author

Martinez, P., Aller-Carpentier, E., Kasper, M., Boccaletti, A., Dorrer, C., and Baudrand, J.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

The exoplanetary science through direct imaging and spectroscopy will largely expand with the forthcoming development of new instruments at the VLT (SPHERE), Gemini (GPI), Subaru (HiCIAO), and Palomar (Project 1640) observatories. All these ground-based adaptive optics instruments combine extremely high performance adaptive optics (XAO) systems correcting for the atmospheric turbulence with advanced starlight-cancellation techniques such as coronagraphy to deliver contrast ratios of about 10-6 to 10-7. While the past fifteen years have seen intensive research and the development of high-contrast coronagraph concepts, very few concepts have been tested under dynamical seeing conditions (either during sky observation or in a realistic laboratory environment). In this paper, we discuss the results obtained with four different coronagraphs -- phase and amplitude types -- on the High-Order Testbench (HOT), the adaptive optics facility developed at ESO. This facility emphasizes realistic conditions encountered at a telescope (e.g., VLT), including a turbulence generator and a high-order adaptive optics system. It enables to evaluate the performance of high-contrast coronagraphs in the near-IR operating with an AO-corrected PSF of 90% Strehl ratio under 0.5 arcsec dynamical seeing., Comment: Accepted for publication in MNRAS

Published
2011
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3. NAOMI: the adaptive optics system of the Auxiliary Telescopes of the VLTI

Author

Woillez, J., primary, Abad, J. A., additional, Abuter, R., additional, Aller Carpentier, E., additional, Alonso, J., additional, Andolfato, L., additional, Barriga, P., additional, Berger, J.-P., additional, Beuzit, J.-L., additional, Bonnet, H., additional, Bourdarot, G., additional, Bourget, P., additional, Brast, R., additional, Caniguante, L., additional, Cottalorda, E., additional, Darré, P., additional, Delabre, B., additional, Delboulbé, A., additional, Delplancke-Ströbele, F., additional, Dembet, R., additional, Donaldson, R., additional, Dorn, R., additional, Dupeyron, J., additional, Dupuy, C., additional, Egner, S., additional, Eisenhauer, F., additional, Fischer, G., additional, Frank, C., additional, Fuenteseca, E., additional, Gitton, P., additional, Gonté, F., additional, Guerlet, T., additional, Guieu, S., additional, Gutierrez, P., additional, Haguenauer, P., additional, Haimerl, A., additional, Haubois, X., additional, Heritier, C., additional, Huber, S., additional, Hubin, N., additional, Jolley, P., additional, Jocou, L., additional, Kirchbauer, J.-P., additional, Kolb, J., additional, Kosmalski, J., additional, Krempl, P., additional, Le Bouquin, J.-B., additional, Le Louarn, M., additional, Lilley, P., additional, Lopez, B., additional, Magnard, Y., additional, Mclay, S., additional, Meilland, A., additional, Meister, A., additional, Merand, A., additional, Moulin, T., additional, Pasquini, L., additional, Paufique, J., additional, Percheron, I., additional, Pettazzi, L., additional, Pfuhl, O., additional, Phan, D., additional, Pirani, W., additional, Quentin, J., additional, Rakich, A., additional, Ridings, R., additional, Riedel, M., additional, Reyes, J., additional, Rochat, S., additional, Santos Tomás, G., additional, Schmid, C., additional, Schuhler, N., additional, Shchekaturov, P., additional, Seidel, M., additional, Soenke, C., additional, Stadler, E., additional, Stephan, C., additional, Suárez, M., additional, Todorovic, M., additional, Valdes, G., additional, Verinaud, C., additional, Zins, G., additional, and Zúñiga-Fernández, S., additional

Published
2019
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4. Halftoning for high-contrast imaging

Author

Kasper M., Aller Carpentier E., Dorrer C., Martinez P., Boccaletti A., and Dohlen K.

Subjects
Physics, QC1-999
Abstract

High-contrast instruments, such as SPHERE (upcoming planet finder instrument for the ESO-VLT), or EPICS (planet hunter project for the future E-ELT), will require customized components with spatially varying transmission (e.g. coronagraphs, optical components that reduce the contrast between a companion and its parent star). The goal of these sub-systems is to control the spatial transmission, either in a pupil plane (pupil apodization), or in a focal plane of the instrument (occulting mask, i.e. low-frequency filter). Reliably producing components with spatially varying transmission is not trivial, and different techniques have been already investigated for application to astronomy (e.g. metal deposition with spatially-varying thickness, or high-energy beam sensitive glass using e-beam lithography). We present some results related to the recent development of components with spatially varying transmission using a relatively simple technique analogous to the digital halftoning process used for printing applications.

Published
2011
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5. XAO coronagraphy with the High-Order Test bench

Author

Kasper M., Aller Carpentier E., and Martinez P.

Subjects
Physics, QC1-999
Abstract

Extreme adaptive optics systems dedicated to the search for extra solar planets are currently being developed for 8–10 meter class telescopes. The High-Order Test bench (HOT) is a high-contrast imaging adaptive optics bench developed at ESO. Its objective is to test and optimize different techniques and technologies (e.g. wave front sensors, coronagraphs, speckle calibration methods…). It mimics realistic conditions at a telescope (e.g. VLT), including turbulence generator, XAO, and various near-IR coronagraphs. Here we provide a short overview of the system, and present results of recent AO-closed loop coronagraphic runs obtained with an Apodized Pupil Lyot Coronagraph (APLC).

Published
2011
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6. AOF: standalone test results of GALACSI

Author

La Penna, P., additional, Aller Carpentier, E., additional, Argomedo, J., additional, Arsenault, R., additional, Conzelmann, R. D., additional, Delabre, B., additional, Donaldson, R., additional, Gago, F., additional, Gutierrez-Cheetam, P., additional, Hubin, N., additional, Jolley, P., additional, Kiekebusch, M., additional, Kirchbauer, J. P., additional, Klein, B., additional, Kolb, J., additional, Kuntschner, H., additional, Le Louarn, M., additional, Lizon, J.-L., additional, Madec, P.-Y., additional, Manescau, A., additional, Mehrgan, L., additional, Oberti, S., additional, Quentin, J., additional, Sedghi, B., additional, Ströbele, S., additional, Suárez Valles, M., additional, Soenke, C., additional, Tordo, S., additional, and Vernet, J., additional

Published
2016
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7. GALACSI integration and functional tests

Author

La Penna, P., additional, Ströbele, S., additional, Aller Carpentier, E., additional, Argomedo, J., additional, Arsenault, R., additional, Conzelmann, R. D., additional, Delabre, B., additional, Donaldson, R., additional, Duchateau, M., additional, Fedrigo, E., additional, Gago, F., additional, Hubin, N., additional, Quentin, J., additional, Jolley, P., additional, Kiekebusch, M., additional, Kirchbauer, J. P., additional, Klein, B., additional, Kolb, J., additional, Kuntschner, H., additional, Le Louarn, M., additional, Lizon, J. L., additional, Madec, P. -., additional, Manescau, A., additional, Mehrgan, L., additional, Sedghi, B., additional, Suarez Valles, M., additional, Soenke, C., additional, Tordo, S., additional, Vernet, J., additional, and Zampieri, S., additional

Published
2014
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17. Design, analysis, and testing of a microdot apodizer for the Apodized Pupil Lyot Coronagraph

Author

Martinez, P., Dorrer, C., Aller Carpentier, E., Kasper, M., Boccaletti, A., Dohlen, K., Yaitskova, N., Martinez, P., Dorrer, C., Aller Carpentier, E., Kasper, M., Boccaletti, A., Dohlen, K., and Yaitskova, N.

Abstract

Context. Coronagraphic techniques are required for detecting exoplanets with future Extremely Large Telescopes. One concept, the Apodized Pupil Lyot Coronagraph (APLC), combines an apodizer in the entrance aperture with a Lyot opaque mask in the focal plane. This paper presents the manufacturing and testing of a microdots apodizer optimized for the near IR.

Published
2009
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18. AOF: standalone test results of GALACSI

Author

Marchetti, Enrico, Close, Laird M., Véran, Jean-Pierre, La Penna, P., Aller Carpentier, E., Argomedo, J., Arsenault, R., Conzelmann, R. D., Delabre, B., Donaldson, R., Gago, F., Gutierrez-Cheetam, P., Hubin, N., Jolley, P., Kiekebusch, M., Kirchbauer, J. P., Klein, B., Kolb, J., Kuntschner, H., Le Louarn, M., Lizon, J.-L., Madec, P.-Y., Manescau, A., Mehrgan, L., Oberti, S., Quentin, J., Sedghi, B., Ströbele, S., Suárez Valles, M., Soenke, C., Tordo, S., and Vernet, J.

Published
2016
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19. GALACSI integration and functional tests

Author

Marchetti, Enrico, Close, Laird M., Véran, Jean-Pierre, La Penna, P., Ströbele, S., Aller Carpentier, E., Argomedo, J., Arsenault, R., Conzelmann, R. D., Delabre, B., Donaldson, R., Duchateau, M., Fedrigo, E., Gago, F., Hubin, N., Quentin, J., Jolley, P., Kiekebusch, M., Kirchbauer, J. P., Klein, B., Kolb, J., Kuntschner, H., Le Louarn, M., Lizon, J. L., Madec, P. -., Manescau, A., Mehrgan, L., Sedghi, B., Suarez Valles, M., Soenke, C., Tordo, S., Vernet, J., and Zampieri, S.

Published
2014
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