Evaluation of deflectometry for E-ELT optics

Journal
Date Issued
2015
Author(s)
•
•
Abstract
A deflectometrical facility was developed at Italian National Institute for Astrophysics-OAB in the context of the ASTRI project to characterize free-form segments for Cherenkov optics. The test works as an inverse Ronchi test in combination with a ray-tracing code: the under-test surface is illuminated by a known light pattern and the pattern warped by local surface errors is observed. Knowing the geometry of the system it is possible to retrieve the surface normal vectors. This contribution presents the analysis of the upgrades and of the configuration modifications required to allow the use of deflectometry in the realization of optical components suitable for European Extremely Large Telescope and as a specific case to support the manufacturing of the Multi-conjugate Adaptive Optics Relay (MAORY) module.

Coverage
The outcome of the project T-REX, the Italian progetto premiale for E-ELT
All editors
Ciliegi, P.; Pareschi, G.; Tosi, M.
Volume
86
Start page
424
Conferenece
The outcome of the project T-REX, the Italian progetto premiale for E-ELT
Conferenece place
Sexten (BZ, Italy)
Conferenece date
July 19-23, 2015
Uri
Url
Issn Identifier
0037-8720
Ads BibCode
2015MmSAI..86..424S
Rights
open.access
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