Výsledky vyhledávání - "G. R. Lemaitre"

CASTLE: A curved-sensor-based wide-field telescope at Calar Alto

Autor: K. Joaquina, Enrique Pérez, G. R. Lemaitre, Emmanuel Hugot, Eduard Muslimov, Simona Lombardo, J. M. Ibáñez Mengual, Justo Sanchez, Francisco Prada, M. Pons

Publikováno v: Digital.CSIC. Repositorio Institucional del CSIC
instname
SPIE Astronomical Telescopes+Instrumentation
SPIE Astronomical Telescopes+Instrumentation, Dec 2020, Marseille, France
Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation IV

Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation IV 2020; Virtual, Online; United States; 14 December 2020 through 22 December 2020; Code 166575.--Proceedings of SPIE - The International Society for Optical Engineeri

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6a0bb9d89008af16d24e6858776cc328
http://hdl.handle.net/10261/234178

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High performance large lightweight mirrors fabrication adapted to stress-mirror polishing (SMP) technique

Autor: Sabri Lemared, C. Du Jeu, Marc Ferrari, G. R. Lemaitre, Emmanuel Hugot, Thibault Dufour

Publikováno v: International Conference on Space Optics — ICSO 2018.

Earth observation space instruments require very tight optical performances in the most stringent configuration (observation in the optical wavelengths range). The optical quality of mirrors, mainly in term of both shape and roughness polishing quali

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ce90e6f3cced868ed1d4f5c0c1e630f5
https://doi.org/10.1117/12.2536164

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MESSIER: exploring the ultra-low surface brightness universe with a curved focal plane based satellite

Autor: Eduard Muslimov, G. R. Lemaitre, Simona Lombardo, Marc Ferrari, D. Valls-Gabaud, Melanie Roulet, K. Joaquina, Emmanuel Hugot

Publikováno v: International Conference on Space Optics-ICSO 2018
International Conference on Space Optics-ICSO 2018, Oct 2018, Chania, France. pp.103, ⟨10.1117/12.2536023⟩

The extremely low surface brightness sensitivity required to observe the ultra-low-surface brightness universe lead us to propose MESSIER, a space mission designed to drift-scan the entire sky in 6 filters covering the 200-1000 nm range and reaching

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bde980ab323f3ff271d288a6939d9d68
https://doi.org/10.1117/12.2536023

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Next-generation telescopes with curved focal surface for ultra-low surface brightness surveys

Autor: Simona Lombardo, Emmanuel Hugot, G. R. Lemaitre, Eduard Muslimov

Publikováno v: Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2019, ⟨10.1093/mnras/stz2068⟩
Monthly Notices of the Royal Astronomical Society, 2019, ⟨10.1093/mnras/stz2068⟩

In spite of major advances in both ground- and space-based instrumentation, the ultra-low-surface brightness universe (ULSB) still remains a largely unexplored volume in observational parameter space. ULSB observations provide unique constraints on a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b0c526deef9dba0be51feb9aecf78ca3
https://hal.archives-ouvertes.fr/hal-02263343

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Design and modeling of spectrographs with holographic gratings on freeform surfaces

Autor: Robert Grange, G. R. Lemaitre, Simona Lombardo, Eduard Muslimov, Marc Ferrari, Jean-Claude Bouret, Emmanuel Hugot, Ilia A. Guskov, Coralie Neiner

Publikováno v: Optical Engineering
Optical Engineering, 2018, 57 (12), pp.1. ⟨10.1117/1.OE.57.12.125105⟩
Optical Engineering, SPIE, 2018, 57 (12), pp.1. ⟨10.1117/1.OE.57.12.125105⟩

In the present paper we demonstrate the approach of using a holographic grating on a freeform surface for advanced spectrographs design. We discuss the surface and groove pattern description used for ray-tracing. Moreover, we present a general proced

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e421409e7e40012105b7c846e5bd98e3
https://hal.science/hal-02323651

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Space active optics: in flight aberrations correction for the next generation of large space telescopes

Autor: Marc Ferrari, G. R. Lemaitre, Marie Laslandes, Emmanuel Hugot

Publikováno v: International Conference on Space Optics — ICSO 2010.

The need for both high quality images and light structures is a constant concern in the conception of space telescopes. In this paper, we present an active optics system as a way to fulfill those two objectives. Indeed, active optics consists in cont

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::60fe4e843fac6796a5bba5911769f63a
https://doi.org/10.1117/12.2309120

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Fireball multi object spectrograph: as-built optic performances

Autor: David Schiminovich, Sandrine Pascal, Alain Origne, Samuel Quiret, Robert Grange, Erika T. Hamden, G. R. Lemaitre, B. Milliard

Publikováno v: SPIE Proceedings.

Fireball (Faint Intergalactic Redshifted Emission Balloon) is a NASA/CNES balloon-borne experiment to study the faint diffuse circumgalactic medium from the line emissions in the ultraviolet (200 nm) above 37 km flight altitude. Fireball relies on a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::620fc68f4eaa7cd520a395d2c37ac6ba
https://doi.org/10.1117/12.2233267

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The FIREBall-2 UV sample grating efficiency at 200-208nm

Autor: A. Caillat, G. R. Lemaitre, M. Belhadi, Samuel Quiret, Robert Grange, B. Milliard, A. Cotel

Publikováno v: SPIE Proceedings.

The FIREBall-2 (Faint Intergalactic Redshifted Emission Balloon-2) is a balloon-borne ultraviolet spectro-imaging mission optimized for the study of faint diffuse emission around galaxies. A key optical component of the new spectrograph design is the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::04456b582e787b795336a34cd6f5179a
https://doi.org/10.1117/12.2056972

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Multi object spectrograph of the Fireball balloon experiment

Autor: Alain Origne, B. Milliard, Sandrine Pascal, G. R. Lemaitre, Samuel Quiret, Robert Grange

Publikováno v: SPIE Proceedings.

Fireball is a NASA/CNES balloon-borne experiment to study th e faint diffuse circumgalactic emission in the ultraviolet around 200 nm. The field of view of the 1 meter diameter parabola is enlarged using a two-mirror field corrector providing 1000 ar

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::509ac08f0f67d77212c89acf5c22253d
https://doi.org/10.1117/12.2056388

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Multi Object Spectrograph of the Fireball-II Balloon Experiment

Autor: G. R. Lemaitre, Vincent Lamande, Samuel Quiret, B. Milliard, Sandrine Pascal, Robert Grange

Publikováno v: Proc. OSA Conference on Optical Fabrication and Testing-OF&T
Proc. OSA Conference on Optical Fabrication and Testing-OF&T, Jun 2014, Hawaii, United States

International audience; Fireball-II is a NASA/CNES balloon-borne telescope and MOS to study faint diffuse emissions of galaxies in the space ultraviolet. The MOS is based on two identical reflective Schmidt systems sharing an plane-aspherized grating

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d68ae148d1a6d7790cf9ac5681afa862
https://hal.science/hal-02057595/document

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