C. Breen, O. A. Gonzalez, S. Beard, M. Black, A. Cabral, A. O'Brien, P. Rees, J. Sepulveda, T.-C. Shen, M. Sims, G. Soutar, W. Taylor, C. Waring, S. Watson, M. P. Zúñiga
Abstract
MOONS is the Multi-Object Optical and Near-IR Spectrograph for ESO’s Very Large Telescope. The instrument will use ∼1000 optical fibres which can be individually aligned to on-sky targets across a field of view of 500 square arcmin. Each fibre is positioned using a dual arm theta-phi fibre positioning unit (FPU). The MOONS metrology system must be able to simultaneously measure the position of each fibre to a high accuracy (∼15 micrometres) as well as measuring the orientation of the FPU arms. In this paper, we present a description of photogrammetry-based metrology system design and its implementation in the instrument. We also report on the integration, testing, and performance of the system within the instrument.
Keywords
Metrology; Cameras; Equipment; Target detection; Calibration; Photogrammetry; Detection and tracking algorithms
Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation VI
Ralf Jedamzik Ramón Navarro
SPIE
Proceedings of the SPIE
Volume 13100
2024 August
