Prospects for improved instrumentation on future solar space missions

Astronomy and Astrophysics – Astronomy

Scientific paper

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Improvement, Satellite-Borne Instruments, Solar Physics, Solar Spectrometers, Space Missions, Spaceborne Telescopes, Extreme Ultraviolet Radiation, High Resolution, Soho Mission, Space Shuttle Payloads, Spectral Resolution, Ultraviolet Astronomy

Scientific paper

The status of space based instrumentation at the time of the Soho launch is summarized, the areas where improvements are foreseeable are examined, and an overview of the gains that can be achieved is presented. Special attention is paid to identifying intrinsic limitations related to classical mountings in the UV and EUV range. Some mountings are discussed, with their limitations, in the context of missions already proposed. The present capabilities of solar physics instrumentation in space are on the 1 arcsec angular resolution domain, with a resolving power near 30,000, and the ability to fit spectral line profiles and to establish line of sight velocities down to 1 km/s. Few rocket instruments have yet crossed the 1 arcsec angular resolution threshold. The goal of the next generation of solar instrumentation in space is to achieve 0.1 arcsec angular resolution whilst retaining the same spectral resolution and improving the temporal resolution.

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