Please note that eDoc will be permanently shut down in the first quarter of 2021!      Home News About Us Contact Contributors Disclaimer Privacy Policy Help FAQ

Quick Search
My eDoc
Session History
Support Wiki
Direct access to
document ID:

          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents

ID: 421735.0, MPI für Astronomie / Publikationen_mpia
Vibration measurements at the Large Binocular Telescope (LBT)
Authors:Brix, M.; Naranjo, V.; Beckmann, U.; Bertram, R.; Bertram, T.; Brynnel, J.; Egner, S.; Gaessler, W.; Herbst, T. M.; Kuerster, M.; Rohloff, R. R.; Rost, S.; Schmidt, J.
Place of Publication:Bellingham, Wash.
Date of Publication (YYYY-MM-DD):2008
Title of Proceedings:Ground-based and Airborne Telescopes II
Start Page:70122J-70122J
End Page:10
Title of Series:SPIE
Volume (in Series):7012
Name of Conference/Meeting:Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series
Review Status:not specified
Audience:Experts Only
Abstract / Description:The Large Binocular Telescope (LBT) is an international collaboration, with partners from the United States, Italy, and Germany. The telescope uses two 8.4-meter diameter primary mirrors to produce coherent images with the combined light along with adaptive optics. The correct functioning and optimum performance of the LBT is only achieved through a complex interplay of various optical elements. Each of these elements has its individual vibration behaviour, and therefore it is necessary to characterize the LBT as a distributed vibration system. LINC-NIRVANA is a near-infrared image-plane beam combiner with advanced, multi-conjugated adaptive optics, and one of the interferometric instruments for the Large Binocular Telescope (LBT). Its spectral range goes from 1.0 mum to 2.45 mum, therefore the requirements for the maximum optical path difference (OPD) are very tight (lambda/10 ~ 100 nm). 1 During two dedicated campaigns, the vibrations introduced by various actuators were measured using different kinds of sensors. The evaluation of the obtained data allows an estimation of the frequency and amplitude contributions of the individual vibration sources. Until the final state of the LBT is reached, further measurements are necessary to optimize and adapt the equipment and also the investigated elements and configurations (measurement points and directions, number of sensors, etc.).
Comment of the Author/Creator:Date: 2008, August 1, 2008
External Publication Status:published
Document Type:Conference-Paper
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:URL: [ID No:1]
The scope and number of records on eDoc is subject to the collection policies defined by each institute - see "info" button in the collection browse view.