Replication As An Alternative Approach For Large Segmented Telescopes

Details Replication As An Alternative Approach For Large Segmented Telescopes Replication As An Alternative Approach For Large Segmented Telescopes

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aas...203.3819f&link_type=abstract

American Astronomical Society Meeting 203, #38.19; Bulletin of the American Astronomical Society, Vol. 35, p.1263

Astronomy and Astrophysics

Astronomy

Scientific paper

The next generation of optical/IR telescopes will require large numbers of co-phased mirror segments. Therefore, some form of replication technology is desirable to reduce costs. Eletroforming has the advantage that it is a commercially developed technology for replication, and the technology has been widely used for making X-ray mirrors (e.g. XMM-Newton). Composite materials are appealing, since a great deal of development work has been done with composites as well. There are 3 areas that need to be addressed: replication with minimal stress so as to produce a high quality figure; attachment of support of the mirror segment so as to maintain the figure quality; thermal control requirements. Here we present a discussion of the requirements that lead us to select replication as the fabrication technology and the advantages of replication. We report on our first results of making a concave and flat mirrors.
This work was funded by a NASA Space Grant to Illinois, Ball Aerospace, Northwestern University, NASA Contract NAS1-03007, an AFOSR Contract F4620-C-0073, and a NASA Grant NAG5-03069.

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