MOONS – Multi object spectroscopy for the VLT: testing and integration of the MOONS metrology system
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.
Authors
- Chris Waring
- William R. Taylor (ORCID: https://orcid.org/0000-0003-4060-4098)
- Alexandre Cabral (ORCID: https://orcid.org/0000-0002-9433-871X)
- Martin Black
- Ciaran Breen
- Alan O'Brien
- Philip Rees (ORCID: https://orcid.org/0000-0002-4276-9091)
- Steve Watson
- Jorge Sepúlveda (ORCID: https://orcid.org/0000-0003-3014-2256)
- Tzu‐Chiang Shen
- O. González López (ORCID: https://orcid.org/0000-0002-4532-6464)
- Gregor Soutar
- Mathew Sims
- Steven Beard
- Manuel Parra Zúñiga
Institutions
- Science and Technology Facilities Council (GB)
- UK Astronomy Technology Centre (GB)
Publication Details
- Published
- 2024-08-26
- DOI
- https://doi.org/10.1117/12.3018981
- Primary Topic
- Adaptive optics and wavefront sensing
- Type
- article
- Field-Weighted Citation Impact
- 0.00