The Coronagraph and Heliospheric Imager for the Lagrange L5 Mission
Abstract
The Space Weather (SWE) element of ESA's Space Situational Awareness (SSA) - now Space Safety - programme was established to address the increasing risk of solar effects on human technological systems and health. Within its Period 3, the SSA programme was extended to include an additional element (LGR) targeted towards the development of a space weather monitoring mission - Lagrange - to L5. It is envisaged that Lagrange will operate in coordination with a US-led mission to L1. Under the auspices of LGR, a number of Phase A/B1 studies have been undertaken; these studies, recently completed, cover the remote-sensing payload, the in-situ payload, and overall Lagrange system. The remote-sensing instrument package for the Lagrange mission includes a Coronagraph (COR) and Heliospheric Imager (HI). These instruments are based on heritage from the Solar Coronagraph for Operations (SCOPE) concept study and the HI instruments on-board the Solar Terrestrial Relations Observatory (STEREO) spacecraft, respectively. In this presentation, we will review the observational requirements for Lagrange COR and HI. We will then present their optical, mechanical, thermal and electrical designs - as well as their operations concepts - developed to meet these observational requirements and those of the Lagrange mission. Differences between the requirements, and design, of the Lagrange COR and HI instruments and those of their heritage instruments will be highlighted.
- Publication:
-
AGU Fall Meeting Abstracts
- Pub Date:
- December 2019
- Bibcode:
- 2019AGUFMSH33C3368D
- Keywords:
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- 4323 Human impact;
- NATURAL HAZARDS;
- 7594 Instruments and techniques;
- SOLAR PHYSICS;
- ASTROPHYSICS;
- AND ASTRONOMY;
- 7924 Forecasting;
- SPACE WEATHER;
- 7934 Impacts on technological systems;
- SPACE WEATHER