OVMS: the optical path difference and vibration monitoring system for the LBT and its interferometers

M. Kürster; T. Bertram; J. L. Borelli; M. Brix; W. Gässler; T. M. Herbst; V. Naranjo; J.-U. Pott; J. Trowitzsch; T. E. Connors; P. M. Hinz; T. J. McMahon; D. S. Ashby; J. G. Brynnel; N. J. Cushing; T. Edgin; J. D. Esguerra; R. F. Green; J. Kraus; J. Little; U. Beckmann; G. P. Weigelt

doi:10.1117/12.856693

21 July 2010 OVMS: the optical path difference and vibration monitoring system for the LBT and its interferometers

M. Kürster, T. Bertram, J. L. Borelli, M. Brix, W. Gässler, T. M. Herbst, V. Naranjo, J.-U. Pott, J. Trowitzsch, T. E. Connors, P. M. Hinz, T. J. McMahon, D. S. Ashby, J. G. Brynnel, N. J. Cushing, T. Edgin, J. D. Esguerra, R. F. Green, J. Kraus, J. Little, U. Beckmann, G. P. Weigelt

Author Affiliations +

Proceedings Volume 7734, Optical and Infrared Interferometry II; 77342Y (2010) https://doi.org/10.1117/12.856693
Event: SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, California, United States

Abstract

Characterisation, mitigation and correction of telescope vibrations have proven to be crucial for the performance of astronomical infrared interferometers. The project teams of the interferometers for the LBT, LINC-NIRVANA and LBTI, and LBT Observatory (LBTO) have embarked on a joint effort to implement an accelerometer-based vibration measurement system distributed over the optical elements of the LBT. OVMS, the Optical Path Difference and Vibration Monitoring System will serve to (i) ensure conditions suitable for adaptive optics (AO) and interferometric (IF) observations and (ii) utilize vibration information, converted into tip-tilt and optical path difference data, in the control strategies of the LBT adaptive secondary mirrors and the beam combining interferometers. The system hardware is mainly developed by Steward Observatory's LBTI team and its installation at the LBT is underway. The OVMS software development and associated computer infrastructure is the responsibility of the LINC-NIRVANA team at MPIA Heidelberg. Initially, the OVMS will fill a data archive provided by LBTO that will be used to study vibration data and correlate them with telescope movements and environmental parameters thereby identifiying sources of vibrations and to eliminate or mitigate them. Data display tools will help LBTO staff to keep vibrations within predefined thresholds for quiet conditions for AO and IF observations. Later-on real-time data from the OVMS will be fed into the control loops of the AO systems and IF instruments in order to permit the correction of vibration signals with frequencies up to 450 Hz.

Citation Download Citation

M. Kürster, T. Bertram, J. L. Borelli, M. Brix, W. Gässler, T. M. Herbst, V. Naranjo, J.-U. Pott, J. Trowitzsch, T. E. Connors, P. M. Hinz, T. J. McMahon, D. S. Ashby, J. G. Brynnel, N. J. Cushing, T. Edgin, J. D. Esguerra, R. F. Green, J. Kraus, J. Little, U. Beckmann, and G. P. Weigelt "OVMS: the optical path difference and vibration monitoring system for the LBT and its interferometers", Proc. SPIE 7734, Optical and Infrared Interferometry II, 77342Y (21 July 2010); https://doi.org/10.1117/12.856693

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available