Performance of a novel tip-tilt secondary system on the Blanco 4-m telescope

Ronald G. Probst; Patrice Bouchet; German Schumacher; Ricardo E. Schmidt

doi:10.1117/12.317320

21 August 1998 Performance of a novel tip-tilt secondary system on the Blanco 4-m telescope

Ronald G. Probst, Patrice Bouchet, German Schumacher, Ricardo E. Schmidt

Proceedings Volume 3354, Infrared Astronomical Instrumentation; (1998) https://doi.org/10.1117/12.317320
Event: Astronomical Telescopes and Instrumentation, 1998, Kona, HI, United States

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.

Citation Download Citation

Ronald G. Probst, Patrice Bouchet, German Schumacher, and Ricardo E. Schmidt "Performance of a novel tip-tilt secondary system on the Blanco 4-m telescope", Proc. SPIE 3354, Infrared Astronomical Instrumentation, (21 August 1998); https://doi.org/10.1117/12.317320

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