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- W66420606 abstract "There has been significant progress in the manufacture of the first secondary mirror unit of the VLT since the last report in The Messenger (No. 86, December 1996). During the first months of 1997, tests of the various subassemblies (focusing, centring, chopping and sky-baffle mechanisms) were completed and final integration was achieved in the clean assembly room of Dornier Satellitensysteme in Friedrichshafen, Germany. The systematic tests performed prior to final integration, including tests of the electronics and software integration tests were helpful for early detection and elimination of error sources affecting performance of the M2 Unit. Before the end of April 1997 the Mandatory Inspection Point meeting which was held between Dornier and ESO, as foreseen in the contract, formally concluded the manufacturing and integration activities and opened the acceptance test phase, structured in four distinct steps. The first step is related to Electromagnetic Compatibility. The second step is the testing of the software. The third step checks in depth the kinematic and the thermal performance of the unit, taking also into account the environmental conditions foreseen on site. The final step is constituted by the dynamic and stability testing. As per today the Electromechanical Unit has undergone the Electromagnetic Compatibility test and the Software tests. The electromagnetic compatibility tests, which were performed in the anechoic chamber of Dornier (see Fig. 1), showed the ability of the unit to perform" @default.
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- W66420606 date "1997-06-01" @default.
- W66420606 modified "2023-09-22" @default.
- W66420606 title "The secondary unit of the VLT approaches delivery." @default.
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