Solar interferometry with a 4-aperture nonredundant and stabilized network

Details Solar interferometry with a 4-aperture nonredundant and stabilized network Solar interferometry with a 4-aperture nonredundant and stabilized network

Aug 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987esasp.273..189d&link_type=abstract

In ESA, ESA Workshop on Optical Interferometry in Space p 189-195 (SEE N88-10613 01-74)

Astronomy and Astrophysics

Astronomy

1

Fine Structure, High Resolution, Interferometry, Spaceborne Astronomy, Sun, Coronal Loops, Solar Limb, Systems Engineering, Ultraviolet Astronomy

Scientific paper

The solar fine structure investigation is discussed. Observations with a few hundredths arcsec resolution, i.e., 10 to 15 km on the Sun surface, are necessary. Inaccessible directly, such very high resolutions require interferometry. However, the design of a solar interferometer is intrinsically complex since many requirements, often found separately, and difficult by themselves, are brought together, i.e., UV spectral range, limb observations, resolved structures (low contrast) and time resolution. The stabilized interferometry technique, applied to a nonredundant array of four telescopes, provides an elegant solution to the problems. Implementation of the instrument on the space station should be possible in view of its compactness and internal metrology.

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