Pier vibration isolation for lightweight interferometry telescopes

Perry G. Wood, F E Penado, James H. Clark, Joshua P. Walton

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The Navy Prototype Optical Interferometer (NPOI) in Flagstaff, Arizona, makes use of separate smaller telescopes spaced along a Y-array and used simultaneously to simulate an equivalent single large telescope. Each telescope is mounted on a massive reinforced concrete pier tied to bedrock. The mass of the pier dampens most, but not all, of the unwanted vibration in the required spectrum. The quality and resolution of a stellar image depends on minimizing movement of the mirrors due to vibration. The main source of pier vibration is due to the soil-pier interaction. Surrounding environmental and man-made vibration propagates through the soil as body and surface waves, and forces the pier to move. In this paper, a concept based on a sleeve/air gap system to isolate the soil from the pier is used to minimize the vibration input to the telescope. An example of the concept is presented with respect to the future implementation of a 1.4-m diameter composite telescope at the Navy Prototype Optical Interferometer.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume6665
DOIs
StatePublished - 2007
EventNew Developments in Optomechanics - San Diego, CA, United States
Duration: Aug 28 2007Aug 30 2007

Other

OtherNew Developments in Optomechanics
CountryUnited States
CitySan Diego, CA
Period8/28/078/30/07

Fingerprint

wharves
Piers
Interferometry
Telescopes
isolation
interferometry
telescopes
vibration
soils
navy
Soils
Interferometers
interferometers
prototypes
sleeves
bedrock
Surface waves
surface waves
Reinforced concrete
mirrors

Keywords

  • Interferometry
  • Lightweight telescope
  • Pier vibration isolation
  • Rayleigh waves
  • Soil-pier interaction

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Wood, P. G., Penado, F. E., Clark, J. H., & Walton, J. P. (2007). Pier vibration isolation for lightweight interferometry telescopes. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 6665). [66650L] https://doi.org/10.1117/12.732730

Pier vibration isolation for lightweight interferometry telescopes. / Wood, Perry G.; Penado, F E; Clark, James H.; Walton, Joshua P.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 6665 2007. 66650L.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Wood, PG, Penado, FE, Clark, JH & Walton, JP 2007, Pier vibration isolation for lightweight interferometry telescopes. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 6665, 66650L, New Developments in Optomechanics, San Diego, CA, United States, 8/28/07. https://doi.org/10.1117/12.732730
Wood PG, Penado FE, Clark JH, Walton JP. Pier vibration isolation for lightweight interferometry telescopes. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 6665. 2007. 66650L https://doi.org/10.1117/12.732730
Wood, Perry G. ; Penado, F E ; Clark, James H. ; Walton, Joshua P. / Pier vibration isolation for lightweight interferometry telescopes. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 6665 2007.
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