High stability piezomotor driven mirror mounts for LINC-NIRVANA

A. Bramigk; H. Marth; R.-R. Rohloff

doi:10.1117/12.931246

13 September 2012 High stability piezomotor driven mirror mounts for LINC-NIRVANA

A. Bramigk, H. Marth, R.-R. Rohloff

Proceedings Volume 8450, Modern Technologies in Space- and Ground-based Telescopes and Instrumentation II; 84505R (2012) https://doi.org/10.1117/12.931246
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands

Abstract

For the LINC-NIRVANA (LN) project, MPIA requested an appropriate motorized mount for initial alignment of two dichroic beam splitters in the instrument. These dichroic mirrors which reflect the visible light and transmit the NIR are located close to the pupil plane are therefore very sensitive to tilt and flexure errors which could be introduced to the wave-front sensor. Considering this the following high level specifications were requested in a very tight operating envelope: range of adjustment tip and tilt ±2° around the major axis of the elliptical mirror, resolution of adjustment <0.5 arcsec , position repeatability <1 arcsec, static position stability within an elevation 0° up to 90° <20 arc seconds and a minimum eigenfrequency <110Hz.

Citation Download Citation

A. Bramigk, H. Marth, and R.-R. Rohloff "High stability piezomotor driven mirror mounts for LINC-NIRVANA", Proc. SPIE 8450, Modern Technologies in Space- and Ground-based Telescopes and Instrumentation II, 84505R (13 September 2012); https://doi.org/10.1117/12.931246

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