Interferometer, Shackcube, Null
Saturday, September 09, 2006
A Shack Cube Interferometer has been designed and developed with a small pinhole at the center of curvature of the reference surface. A spherical reference surface is placed in the correct position by mechanical alignment of a cube. Piezoelectric actuators provide the phase shift of the Interferometer. The Interferometer and a Null Corrector are constructed with mechanical integrate by using a monolithic support structure.
The Null Corrector should be mounted vertically and aligned using a specific alignment procedure. Linear translations (three axes) and rotation about a flex-pivot mechanism achieve the relative alignment between this testing sample and the primary mirror.
Source: “Null test optics for the MMT and Megellan 6.5 m f/1.25 primary mirrors”, by J. H. Burge, D. S. Anderson, D. A. Ketelsen, and S. C. West; SPIE Proceedings, Vol. 2199; J. H. Burge, D. S. Anderson, D. A. Ketelsen, and S. C. West; Steward Observatory Mirror Lab, University of Arizona, Tucson, AZ 85721
Reference: J. M. Hill, SPIE Proceedings, Vol. 1236, pg. 86-107, 1990
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posted by JD52 @ 6:07 PM,
