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Proceedings Paper • Open Access

SCOPE: a coronagraph for operational space weather prediction: phase A/B1 design and breadboarding
Author(s): Kevin F. Middleton; Heiko Anwand; Volker Bothmer; Jackie A. Davies; Andrew Earle; Klaus Ergenzinger; Chris J. Eyles; Robert Hardie; Marie-Laure Hellin; Johannes Hinrichs; Philipp Huke; Piers Jiggens; Volker Kirschner; Emmanuel Mazy; Thomas McCarron; Bogdan Nicula; Lars Stopfkuchen; S. James Tappin; Ian A. J. Tosh; Nick R. Waltham; Matthew J. West

Paper Abstract

Accurate prediction of the arrival of solar wind phenomena, in particular coronal mass ejections (CMEs), is becoming more important given our ever-increasing reliance on technology. SCOPE is a coronagraph specifically optimised for operational space weather prediction, designed to provide early evidence of Earth-bound CMEs. In this paper, we present results from phase A/B1 of the instrument’s development, which included conceptual design and a program of breadboard testing.

We describe the conceptual design of the instrument. In particular, we explain the design and analysis of the straylight rejection baffles and occulter needed to block the image of the solar disc, in order to render the much fainter corona visible. We discuss the development of in-house analysis code to predict the straylight diffraction effects that limit the instrument’s performance, and present results, which we compare against commercially available analysis tools and the results from breadboard testing. In particular, we discuss some of the challenges of predicting straylight effects in this type of instrument and the methods we have developed for overcoming them.

We present the test results from an optical breadboard, designed to verify the end-to-end straylight rejection of the instrument. The design and development of both the breadboard and the test facility is presented. We discuss some of the challenges of measuring very low levels of straylight and how these drive the breadboard and test facility design. We discuss the test and analysis procedures developed to ensure a representative, complete characterisation of the instrument’s straylight response.

Paper Details

Date Published: 12 July 2019
PDF: 7 pages
Proc. SPIE 11180, International Conference on Space Optics — ICSO 2018, 111803A (12 July 2019); doi: 10.1117/12.2536037
Show Author Affiliations
Kevin F. Middleton, STFC Rutherford Appleton Lab. (United Kingdom)
Heiko Anwand, Institut für Astrophysik (Germany)
Volker Bothmer, Institut für Astrophysik (Germany)
Jackie A. Davies, STFC Rutherford Appleton Lab. (United Kingdom)
Andrew Earle, STFC Rutherford Appleton Lab. (United Kingdom)
Klaus Ergenzinger, Airbus Defence and Space GmbH (Germany)
Chris J. Eyles, STFC Rutherford Appleton Lab. (United Kingdom)
Robert Hardie, STFC Rutherford Appleton Lab. (United Kingdom)
Marie-Laure Hellin, Ctr. Spatial de Liège (Belgium)
Johannes Hinrichs, Institut für Astrophysik (Germany)
Philipp Huke, Institut für Astrophysik (Germany)
Piers Jiggens, European Space Research and Technology Ctr. (Netherlands)
Volker Kirschner, European Space Research and Technology Ctr. (Netherlands)
Emmanuel Mazy, Ctr. Spatial de Liège (Belgium)
Thomas McCarron, STFC Rutherford Appleton Lab. (United Kingdom)
Bogdan Nicula, Royal Observatory of Belgium (Belgium)
Lars Stopfkuchen, Ctr. Spatial de Liège (Belgium)
S. James Tappin, STFC Rutherford Appleton Lab. (United Kingdom)
Ian A. J. Tosh, STFC Rutherford Appleton Lab. (United Kingdom)
Nick R. Waltham, STFC Rutherford Appleton Lab. (United Kingdom)
Matthew J. West, Royal Observatory of Belgium (Belgium)


Published in SPIE Proceedings Vol. 11180:
International Conference on Space Optics — ICSO 2018
Zoran Sodnik; Nikos Karafolas; Bruno Cugny, Editor(s)

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