| DOI | Resolve DOI: https://doi.org/10.1117/12.927064 |
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| Author | Search for: Pariani, G.; Search for: Tresoldi, D.; Search for: Spanò, P.1; Search for: Bianco, A. |
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| Affiliation | - National Research Council of Canada. NRC Herzberg Institute of Astrophysics
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| Format | Text, Article |
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| Conference | Modern Technologies in Space- and Ground-Based Telescopes and Instrumentation II, 1 July 2012 through 6 July 2012, Amsterdam |
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| Subject | CGH; Collimated light; Computer generated holograms; Fabrication errors; Flat mirrors; Optical test; Spherical mirror; Test; Wavefront correction; Alignment; Computer generated holography; Holograms; Interferometers; Mirrors; Optical telescopes; Spheres; Telescopes; Optical testing |
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| Abstract | We describe the optical test of a large flat based on a spherical mirror and a dedicated CGH. The spherical mirror, which can be accurately manufactured and tested in absolute way, allows to obtain a quasi collimated light beam, and the hologram performs the residual wavefront correction. Alignment tools for the spherical mirror and the hologram itself are encoded in the CGH. Sensitivity to fabrication errors and alignment has been evaluated. Tests to verify the effectiveness of our approach are now under execution. © 2012 SPIE. |
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| Publication date | 2012 |
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| In | |
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| Series | |
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| Language | English |
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| Peer reviewed | Yes |
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| NPARC number | 21269472 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | a0e346bd-0610-4802-af3b-6b399940b0ec |
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| Record created | 2013-12-12 |
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| Record modified | 2020-04-21 |
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