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Proceedings Article

Fine guidance sensors aboard the Hubble Space Telescope: the scientific capabilities of these interferometers

[+] Author Affiliations
Edmund P. Nelan, Olivia L. Lupie, Russell B. Makidon, Lauretta Nagel

Space Telescope Science Institute (USA)

Barbara McArthur, G. F. Benedict

Univ. of Texas/Austin (USA)

Otto G. Franz, Larry H. Wasserman

Lowell Observatory (USA)

Linda Abramowicz-Reed

Raytheon Optical Systems, Inc. (USA)

Proc. SPIE 3350, Astronomical Interferometry, 237 (July 24, 1998); doi:10.1117/12.317121
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From Conference Volume 3350

  • Astronomical Interferometry
  • Robert D. Reasenberg
  • Kona, HI | March 20, 1998

abstract

The fine guidance sensors (FGS) aboard the Hubble Space Telescope (HST) are optical white light shearing interferometers that offer a unique capability to astronomers. The FGS's photometric dynamic range, fringe visibility, and fringe tracking ability allow the instrument to exploit the benefits of performing interferometry form a space-based platform. The FGSs routinely provide HST with 2 milli-seconds of arc pointing stability. The FGS designated as the Astronomer, FGS3, has also been used to (1) perform 2 mas relative astrometry over the central 4 arc minutes of its field of view, (2) determine the true relative orbits of close faint binary systems, (3) measure the angular diameter of a giant star, (4) search for extra-solar planets, (5) observe occultations of stars by solar system objects, as well as (6) photometrically monitor stellar flares on a low mas M dwarf. In this paper we discuss this unique instrument, its design, performance, and the areas of science for which it is the only device able to successfully observe objects of interest.

© (1998) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Edmund P. Nelan ; Olivia L. Lupie ; Barbara McArthur ; G. F. Benedict ; Otto G. Franz, et al.
"Fine guidance sensors aboard the Hubble Space Telescope: the scientific capabilities of these interferometers", Proc. SPIE 3350, Astronomical Interferometry, 237 (July 24, 1998); doi:10.1117/12.317121; http://dx.doi.org/10.1117/12.317121


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