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Proceedings Paper

A new-generation multi-object high throughput Doppler instrument for a planet survey at the SDSS Telescope
Author(s): Jian Ge; Xiaoke Wan; Bo Zhao; Abishek Hariharan; Suvrath Mahadevan; Julian van Eyken; Pengcheng Guo; Dan McDavitt; Curtis DeWitt; Roger Cohen; Scott W. Fleming; Stephen Kane; Justin Crepp; Stuart Shaklan
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Paper Abstract

We report the design of a new generation multi-object high throughput Doppler instrument and first light results at the Sloan Digital Sky Survey (SDSS) telescope. This instrument, capable of simultaneously monitoring 60 stars for planet detection, is called the W.M. Keck Exoplanet Tracker (or Keck ET) thanks to the generous gift from the W.M. Keck Foundation. It is designed for a planet survey around hundreds of thousands of stars with V =8-13 for detecting tens of thousands of planets in 2006-2020. The Doppler precision is between 3-25 m/s depending on the star magnitude. We also report a new planet detected with a prototype single object version ET instrument at the KPNO Coude Feed/2.1 m telescopes. The extrasolar planet, ET-1 (HD 102195b), has a minimum mass of 0.49 Jupiter masses and orbits a V = 8.1 G8V star with a 4.1 day period. The planet was identified using the Coude Feed 0.9 meter telescope in spring 2005. This is the first time an extrasolar planet around a star fainter than V=8 magnitude has been discovered with an under 1 meter size astronomical telescope and Doppler instrument. This planet discovery is possible due to the extremely high throughput of the instrument, 49% measured from the fiber output end to the detector.

Paper Details

Date Published: 11 July 2006
PDF: 11 pages
Proc. SPIE 6269, Ground-based and Airborne Instrumentation for Astronomy, 62692E (11 July 2006); doi: 10.1117/12.670856
Show Author Affiliations
Jian Ge, Univ. of Florida, Bryant Space Science Ctr. (United States)
Xiaoke Wan, Univ. of Florida, Bryant Space Science Ctr. (United States)
Bo Zhao, Univ. of Florida, Bryant Space Science Ctr. (United States)
Abishek Hariharan, Univ. of Florida, Bryant Space Science Ctr. (United States)
Suvrath Mahadevan, Univ. of Florida, Bryant Space Science Ctr. (United States)
Julian van Eyken, Univ. of Florida, Bryant Space Science Ctr. (United States)
Pengcheng Guo, Univ. of Florida, Bryant Space Science Ctr. (United States)
Dan McDavitt, Univ. of Florida, Bryant Space Science Ctr. (United States)
Curtis DeWitt, Univ. of Florida, Bryant Space Science Ctr. (United States)
Roger Cohen, Univ. of Florida, Bryant Space Science Ctr. (United States)
Scott W. Fleming, Univ. of Florida, Bryant Space Science Ctr. (United States)
Stephen Kane, Univ. of Florida, Bryant Space Science Ctr. (United States)
Justin Crepp, Univ. of Florida, Bryant Space Science Ctr. (United States)
Stuart Shaklan, Jet Propulsion Lab. (United States)


Published in SPIE Proceedings Vol. 6269:
Ground-based and Airborne Instrumentation for Astronomy
Ian S. McLean; Masanori Iye, Editor(s)

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