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http://hdl.handle.net/20.500.12386/24935
Title: | Preparing the E-ELT M4 optical test | Authors: | PARIANI, Giorgio BRIGUGLIO PELLEGRINO, RUNA ANTONIO XOMPERO, MARCO RIVA, Marco ZERBI, Filippo Maria RICCARDI, Armando Tintori, M. Gallieni, D. Andrighettoni, M. Biasi, R. |
Issue Date: | 2015 | Journal: | MEMORIE DELLA SOCIETA ASTRONOMICA ITALIANA | Number: | 86 | First Page: | 416 | Abstract: | The design of the interferometric test of the adaptive M4 Unit of E-ELT, a deformable six petals 2.4 m mirror, will be described. The actual baseline follows a macro-stitching approach, where each segment is separately flattened and co-phased to the other petals. The optical test setup for the single shell consists in a Newtonian system, with a 1.5 m parabolic mirror as main collimator. A 0.6 m reference flat mirror is foreseen to verify the alignment of the interferometric cavity. A Demonstration Prototype of the final M4 Unit, a 222 actuators, two shells deformable mirror, has been produced by Microgate and A.D.S. International. Results of the optical measurement campaign performed in INAF on the prototype mirror are reported. | URI: | http://hdl.handle.net/20.500.12386/24935 | URL: | http://sait.oats.inaf.it/MSAIt860315/index.html | ISSN: | 0037-8720 | Bibcode ADS: | 2015MmSAI..86..416P | Fulltext: | open |
Appears in Collections: | 1.01 Articoli in rivista |
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