OVMS-plus at the LBT: disturbance compensation simplified

• Main Authors: Böhm, Michael, Pott, Jörg-Uwe, Borelli, José, Hinz, Phil, Defrère, Denis, Downey, Elwood, Hill, John, Summers, Kellee, Conrad, Al, Kürster, Martin, Herbst, Tom, Sawodny, Oliver
• Other Authors: Univ Arizona, Steward Observ
• Language: en
• Published: SPIE-INT SOC OPTICAL ENGINEERING 2016
• Subjects: Large Binocular Telescope; Accelerometer; Estimation; Delay; Control; Feedforward Control; Vibration; LBTI; LINC-NIRVANA
• Online Access: Michael Böhm ; Jörg-Uwe Pott ; José Borelli ; Phil Hinz ; Denis Defrère ; Elwood Downey ; John Hill ; Kellee Summers ; Al Conrad ; Martin Kürster ; Tom Herbst and Oliver Sawodny " OVMS-plus at the LBT: disturbance compensation simplified ", Proc. SPIE 9906, Ground-based and Airborne Telescopes VI, 99062R (July 27, 2016); doi:10.1117/12.2231268; http://dx.doi.org/10.1117/12.2231268; http://hdl.handle.net/10150/622509; http://arizona.openrepository.com/arizona/handle/10150/622509

In this paper we will briefly revisit the optical vibration measurement system (OVMS) at the Large Binocular Telescope (LBT) and how these values are used for disturbance compensation and particularly for the LBT Interferometer (LBTI) and the LBT Interferometric Camera for Near-Infrared and Visible Adaptive Interferometry for Astronomy (LINC-NIRVANA). We present the now centralized software architecture, called OVMS+, on which our approach is based and illustrate several challenges faced during the implementation phase. Finally, we will present measurement results from LBTI proving the effectiveness of the approach and the ability to compensate for a large fraction of the telescope induced vibrations.