Mirror replication: is it possible to use replication technique to make V.L.T. telescope secondaries?

Details Mirror replication: is it possible to use replication technique to make V.L.T. telescope secondaries? Mirror replication: is it possible to use replication technique to make V.L.T. telescope secondaries?

Oct 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988vlti....1..429a&link_type=abstract

ESO Conference on Very Large Telescopes and their Instrumentation, Vol. 1, p. 429 - 434

Physics

Mirrors

Scientific paper

Ir is very difficult to polish with great accuracy non spherical convex mirrors such as V.L.T. secondaries. Concave mirrors are much easier to manufacture than convex mirrors. However, starting with a concave non spherical polished surface, it is possible to obtain, by the replication technique, many identical non spherical convex mirrors of accurate shape.

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