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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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Spiga, D.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (19/19 displayed)
- 2023Extending the distributed computing infrastructure of the CMS experiment with HPC resourcescitations
- 2017Design and development of the multilayer optics for the new hard x-ray missioncitations
- 2015Testing multilayer-coated polarizing mirrors for the LAMP soft X-ray telescopecitations
- 2014Integrated modeling for parametric evaluation of smart x-ray opticscitations
- 2013Micro-roughness improvement of slumped glass foils for x-ray telescopes via dip coating
- 2011Technologies for manufacturing of high angular resolution multilayer coated optics for the New Hard X-ray Missioncitations
- 2010Thin gold layer in NiCo and Ni electroforming process: optical surface characterizationcitations
- 2010Technologies for manufacturing of high angular resolution multilayer coated optics for the New Hard X-ray Mission: a status report IIcitations
- 2009Thin gold layer in Ni electroforming process: optical surface characterizationcitations
- 2009Surface smoothness requirements for the mirrors of the IXO x-ray telescopecitations
- 2009Technologies for manufacturing of high angular resolution multilayer coated optics for future new hard x-ray missions: a status reportcitations
- 2008Surface roughness evaluation on mandrels and mirror shells for future X-ray telescopescitations
- 2008Design and development of the SIMBOL-X hard x-ray opticscitations
- 2008Feasibility study for the manufacturing of the multilayer X-ray optics for Simbol-X
- 2008A magnetic diverter for charged particle background rejection in the SIMBOL-X telescopecitations
- 2007Characterization of hydrogenated silicon carbide produced by plasma enhanced chemical vapor deposition at low temperature
- 2007Development of lightweight optical segments for adaptive opticscitations
- 2007Development of a prototype nickel optic for the Constellation-X hard x-ray telescopecitations
- 2005Development of grazing-incidence multilayer mirrors by direct Ni electroforming replication: a status reportcitations
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.