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Proceedings Paper

Performance of a novel tip-tilt secondary system on the Blanco 4-m telescope
Author(s): Ronald G. Probst; Patrice Bouchet; German Schumacher; Ricardo E. Schmidt
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Paper Abstract

A low cost tip-tilt wavefront stabilization system has been put into operation on the Blanco 4-m telescope on Cerro Tololo. A light-weighted f/15 secondary mirror is driven by three commercial piezoelectric actuators. A dichroic at the Cassegrain focus separates optical reference and IR science beams. A steerable high-speed optical CCD sensor, coupled to a dedicated PC for control and image processing, provides positional feedback to the secondary. The IR field is reflected to one of several science sensors. We present a system description, initial performance measures at the telescope, and directions for future improvements.

Paper Details

Date Published: 21 August 1998
PDF: 9 pages
Proc. SPIE 3354, Infrared Astronomical Instrumentation, (21 August 1998); doi: 10.1117/12.317320
Show Author Affiliations
Ronald G. Probst, National Optical Astronomy Observatories (United States)
Patrice Bouchet, National Optical Astronomy Observatories (United States)
German Schumacher, National Optical Astronomy Observatories (United States)
Ricardo E. Schmidt, National Optical Astronomy Observatories (United States)


Published in SPIE Proceedings Vol. 3354:
Infrared Astronomical Instrumentation
Albert M. Fowler, Editor(s)

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