Issue |
A&A
Volume 686, June 2024
|
|
---|---|---|
Article Number | A7 | |
Number of page(s) | 19 | |
Section | Astronomical instrumentation | |
DOI | https://doi.org/10.1051/0004-6361/202348486 | |
Published online | 24 May 2024 |
Adaptive optics telemetry standard
Design and specification of a novel data exchange format
1
Faculdade de Engenharia da Universidade do Porto,
Rua Dr. Roberto Frias s/n,
4200-465
Porto,
Portugal
e-mail: tiagogomes@fe.up.pt
2
Center for Astrophysics and Gravitation, Instituto Superior Técnico,
Av. Rovisco Pais 1,
1049-001
Lisboa,
Portugal
3
Centre for Advanced Instrumentation, Durham University,
South Road,
Durham
DH1 3LE,
UK
4
European Southern Observatory,
Garching,
Germany
5
Université Paris-Saclay, Institut d’Optique Graduate School, CNRS,
Laboratoire Charles Fabry,
91127
Palaiseau,
France
6
Aix Marseille Univ, CNRS, CNES, LAM,
Marseille,
France
Received:
3
November
2023
Accepted:
8
February
2024
Context. The amount of adaptive optics (AO) telemetry generated by visible/near-infrared ground-based observatories is ever greater, leading to a growing need for a standardised data exchange format to support performance analysis, AO research, and development activities that involve large-scale telemetry mining, processing, and curation.
Aims. This paper introduces the Adaptive Optics Telemetry (AOT) data exchange format as a standard for sharing AO telemetry from visible/infrared ground-based observatories. AOT is based on the flexible image transport system (FITS) and aims to provide unambiguous and consistent data access across various systems and configurations, including natural and single- or multiple-laser guide-star AO systems.
Methods. We designed AOT with a focus on two key use cases: atmospheric turbulence parameter estimation and point-spread function reconstruction. We prototyped and tested the design using existing AO telemetry datasets from multiple systems: single conjugate with natural and laser guide stars, tomographic systems with multi-channel wavefront sensors, and single- and multi-wavefront correctors in systems featuring either a Shack-Hartmann or Pyramid as the main wavefront sensor.
Results. The AOT file structure has been thoroughly defined, with specified data fields, descriptions, data types, units, and expected dimensions. To support this format, we have developed a Python package that enables the data conversion, reading, writing, and exploration of AOT files; it has been made publicly available and is compatible with a general-purpose Python package manager. We have demonstrated the flexibility of the AOT format by packaging data from five different instruments, installed on different telescopes.
Key words: atmospheric effects / instrumentation: adaptive optics / instrumentation: detectors / instrumentation: high angular resolution / instrumentation: miscellaneous / astronomical databases: miscellaneous
© The Authors 2024
Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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