A proposed medium-term strategy for optical interferometry in space. Report to the ESA astronomy working group by the ESA Space Interferometry Study Team (SIST).

Details A proposed medium-term strategy for optical interferometry in space. Report to the ESA astronomy working group by the ESA Space Interferometry Study Team (SIST). A proposed medium-term strategy for optical interferometry in space. Report to the ESA astronomy working group by the ESA Space Interferometry Study Team (SIST).

Aug 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990pmso.book.....n&link_type=abstract

A proposed medium-term strategy for optical interferometry in space. Report to the ESA astronomy working group by the ESA Space

Astronomy and Astrophysics

Astronomy

Scientific paper

This report provides a summary of the scientific arguments leading to the requirements for space interferometry, both in terms of its astronomical objectives, and in view of the possibilities attainable from the ground. It is shown that, at optical wavelengths, space missions will be driven by the requirement to achieve diffraction limited images beyond the magnitude limits achievable from the ground. At ultraviolet and infrared wavelengths, similar considerations naturally apply but, in addition, other fundamental physical atmospheric properties enhance further the justification to go to space. It is shown that several issues, albeit important to the efficiency and applicability of both ground and space-based interferometry, are not critical to the scientific case and technological issues facing space interferometry. Amongst these topics are discussions of image reconstruction techniques (speckle, phase closure, etc.), and aperture distribution (redundant, non-redundant). Image restoration techniques and other technical issues have made rapid advances in the context of radio aperture synthesis and VLBI techniques, and, in this field, optical interferometry will be well placed to exploit these advances. There has also been considerable progress in methods, theory and results of speckle imaging from the ground.

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