Astronomy and Astrophysics – Astrophysics
Scientific paper
1995-04-04
Astronomy and Astrophysics
Astrophysics
8 pages of uuencoded compressed postscript, including 9 figures, 7 figure sent upon request. To appear in Astronomy & Astrophy
Scientific paper
We investigate the aspherization of an active mirror for correcting third and fifth-order aberrations. We use a stainless steel AISI 420 mirror with a controlled pressure load, two series of 12-punctual radial positions of force application distributed symmetrically in two concentric rings around the mirror. We obtain the wavefronts for Cv1, Sph3, Coma3, Astm3, Comatri, Astm5 aswell as those of the added wavefronts. Although this active prototype mirror has general uses, our goal is to compensate the aberrations of a liquid mirror observing at large angles from the zenith.
Bactivelane G. R. LemaitreT.
Biagio B. Di
Borra Ermanno F.
Ferrari Marc
Mazzanti Silvio
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