| People | Locations | Statistics |
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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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Basso, S.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2019Glass-made adjustable integration mold for x-ray optics: experimental feasibility campaign
- 2018A novel approach for the realization of thin glass substrates for optical mirrorscitations
- 2017Design and development of the multilayer optics for the new hard x-ray missioncitations
- 2015Cold shaping of thin glass foils: a fast and cost-effective solution for making light-weight astronomical x-ray opticscitations
- 2014Integrated modeling for parametric evaluation of smart x-ray opticscitations
- 2011Technologies for manufacturing of high angular resolution multilayer coated optics for the New Hard X-ray Missioncitations
- 2010Technologies for manufacturing of high angular resolution multilayer coated optics for the New Hard X-ray Mission: a status report IIcitations
- 2008Slumped glass option for making the XEUS mirrors: preliminary design and ongoing developmentscitations
- 2007Characterization of hydrogenated silicon carbide produced by plasma enhanced chemical vapor deposition at low temperature
- 2007Development of lightweight optical segments for adaptive opticscitations
Places of action
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article
Development of lightweight optical segments for adaptive optics
Abstract
The large telescopes nowadays under development will have the adaptive optics systems fully integrated from the beginning of the project. These optics are in fact an essential component that is necessary for the full exploitation of the performances obtainable from the large optics foreseen in these instruments. Due to the large reflecting areas of these telescopes their adaptive optics systems will use probably thin segmented mirrors, assembled to create a single surface, placed along the optical train. Today, a number of telescopes (MMT, LBT, etc) have the monolithic secondary mirror of the instrument used as a component of the adaptive optic system. The technique used for the production of these single pieces thin mirror shells, typically having convex shape, is not well suited for the manufacturing of the large number of segments necessaries for the future telescopes. Infact, the procedure foresees the thinning of conventional thick mirrors, a technique expensive and time consuming. It is hence necessary to find a better approach able to produce thin optical segments in a cost effective way and with short delivery time. In this study, financed in the frame of OPTICON-FP6, the Astronomical Observatory of Brera (INAF-OAB) is investigating a technique for the manufacturing of these optical components that has the potential to fulfill these requirements. The curved optical segments that are under development will have a thickness of few mm and will be made in Borofloat <SUP>TM</SUP> glass. The technique foresees the thermal slumping of thin glass segments using a high quality ceramic mold as a master to impart a precise shape to the glass. The initially flat glass segment is placed onto the mold and then, by means of a suitable thermal cycle, the material is softened so to copy the master shape. If necessary, at the end of the slumping is foreseen the correction of the eventual remaining errors using the Ion Beam Figuring technique. This paper describes the process of production of the optical segments and the status of the investigation.