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Proceedings Paper

On The Possible Use Of Deep U.V. Photoresists Correctors To Obtain The Ultimate U.V. Resolution Of Space Borne Telescopes
Author(s): Luc Dame; Roger M Bonnet; Guy E Artzner
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Paper Abstract

Large Space Borne Telescopes are limited in their Ultra Violet resolution by their large and medium scale (20-30 cm) surface irregularities (ripples). We present the principle, instrumentation and first results of a new interferometric method using a Michelson-Twyman configuration (diverging light beams) that allows to engrave on deep U.V. photoresists a phase compensating plate which permit to recover, partly or entirely, the diffraction limited resolution of the telescope. In our recording procedure there is no intermediary step between the "aberrated" mirror and its corrector : the aberrated mirror directly records its own corrector with all the interferometric quality available from a 257 nm U.V. coherent source. The corrector that we obtain is a phase compensating plate in reflection with highs and lows on its surface perfectly conjugated in negative, with the primary mirror surface irregularities.

Paper Details

Date Published: 9 January 1984
PDF: 14 pages
Proc. SPIE 0445, Instrumentation in Astronomy V, (9 January 1984); doi: 10.1117/12.966163
Show Author Affiliations
Luc Dame, Laboratoire de Physique Stellaire et Planetaire (France)
Roger M Bonnet, European Space Agency (France)
Guy E Artzner, Laboratoire de Physique Stellaire et Planetaire (France)

Published in SPIE Proceedings Vol. 0445:
Instrumentation in Astronomy V
Alec Boksenberg; David L. Crawford, Editor(s)

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