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Improved X-ray computed tomography reconstruction of the largest fragment of the Antikythera Mechanism, an ancient Greek astronomical calculator

Pakzad, A; Iacoviello, F; Ramsey, A; Speller, R; Griffiths, J; Freeth, T; Gibson, A; (2018) Improved X-ray computed tomography reconstruction of the largest fragment of the Antikythera Mechanism, an ancient Greek astronomical calculator. PLoS One , 13 (11) , Article e0207430. 10.1371/journal.pone.0207430. Green open access

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Abstract

The Antikythera Mechanism is an extraordinarily complex ancient Greek astronomical calculating device whose mode of operation is now relatively well understood particularly since imaging studies in 2005 revealed gears and inscriptions which were previously illegible. Unfortunately, the highest resolution X-ray computed tomography image of the largest fragment had some errors which meant that the reconstructed images were not as clear as had been expected. Here, the original X-ray data have been reanalysed and reconstructed. The new X-ray computed tomography images have improved contrast and resolution, leading to better clarity and legibility. The improvement in image quality is characterised and some examples of writing on the Mechanism which can now be read with increased confidence are given.

Type: Article
Title: Improved X-ray computed tomography reconstruction of the largest fragment of the Antikythera Mechanism, an ancient Greek astronomical calculator
Location: United States
Open access status: An open access version is available from UCL Discovery
DOI: 10.1371/journal.pone.0207430
Publisher version: http://doi.org/10.1371/journal.pone.0207430
Language: English
Additional information: Copyright: © 2018 Pakzad et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
UCL classification: UCL
UCL > Provost and Vice Provost Offices
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UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
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URI: https://discovery.ucl.ac.uk/id/eprint/10061816
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