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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Ghigo, Mauro
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (14/14 displayed)
- 2018A novel approach for the realization of thin glass substrates for optical mirrorscitations
- 2015Cold shaping of thin glass foils: a fast and cost-effective solution for making light-weight astronomical x-ray opticscitations
- 2014Evaluation of the surface strength of glass plates shaped by hot slumping processcitations
- 2013Accurate integration of segmented x-ray optics using interfacing ribscitations
- 2009Design And Development The Ixo Mirrors By Innovative Slumping Glass Technologies
- 2009Stiff and Lightweight Optical Mirrors Made by Glass Slumping with Foamed Core
- 2009Lightweight Mirror Developments
- 2005Recent results on manufacturing of segmented x-ray mirrors with slumped glasscitations
- 2003Use of the LIGA process for the production of pyramid wavefront sensors for adaptive optics in astronomycitations
- 2003Replication by Ni electroforming approach to produce the Con-X/HXT hard x-ray mirrorscitations
- 2003Alternative mirror technologies
- 2002Development of soft and hard x-ray optics for astronomy: progress report II and considerations on material properties for large-diameter segmented optics of future missionscitations
- 2000Integral shell mirrors for the Constellation X-ray mission hard x-ray telescopecitations
- 2000Nickel-replicated multilayer optics for soft and hard x-ray telescopescitations
Places of action
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document
Replication by Ni electroforming approach to produce the Con-X/HXT hard x-ray mirrors
Abstract
The NASA's Constellation X-Ray Mission consists of a Soft X-Ray Telescope (SXT) based on large collecting area optics plus a focusing Hard X-Ray Telescope (HXT) operating between 8 and 70 keV and possibly at even higher energy. The Con-X HXT will have a focal length of 10 m and graze angles are small (0.25 - 0.1 deg). The substrates will be coated with multilayers to enhance the reflectivity but single heavy element coatings are an alternative for the small diameter substrates of the set. Twelve copies of the HXT are distributed evenly among the four Con-X spacecrafts. With multiple telescopes it is appropriate to consider electroforming, the replication process used successfully by Beppo-SAX, JET-X/SWIFT, and XMM-Newton, to produce their substrates. The important feature of the technique is that for mirrors with aperture diameters less than 40 cm also with thin substrates it is possible to achieve good angular resolution, which is important for obtaining high signal-to-noise ratios in deep observations and imaging extended sources. We review the main results of our development study devoted to proving the feasibility of the process for the Con-X/HXT, with particular stress on demonstrating, not only by theoretical considerations but also presenting an important experimental proof, that we can satisfy the severe mass constraints of the mission still maintaining good imaging capabilities....