A new generation multi-object Doppler instrument for the SDSS-III Multi-object APO Radial Velocity Exoplanet Large-area Survey

Jian Ge; Brian Lee; Nathan De Lee; Xiaoke Wan; John Groot; Bo Zhao; Frank Varosi; Kevin Hanna; Suvrath Mahadevan; Fred Hearty; Liang Chang; Jian Liu; Julian van Eyken; Ji Wang; Rohan Pais; Zhiping Chen; Alaina Shelden; Erin Costello

doi:10.1117/12.826651

19 August 2009 A new generation multi-object Doppler instrument for the SDSS-III Multi-object APO Radial Velocity Exoplanet Large-area Survey

Jian Ge, Brian Lee, Nathan De Lee, Xiaoke Wan, John Groot, Bo Zhao, Frank Varosi, Kevin Hanna, Suvrath Mahadevan, Fred Hearty, Liang Chang, Jian Liu, Julian van Eyken, Ji Wang, Rohan Pais, Zhiping Chen, Alaina Shelden, Erin Costello

Author Affiliations +

Proceedings Volume 7440, Techniques and Instrumentation for Detection of Exoplanets IV; 74400L (2009) https://doi.org/10.1117/12.826651
Event: SPIE Optical Engineering + Applications, 2009, San Diego, California, United States

Abstract

We report performance of a new generation multi-object Doppler instrument for the on-going Multi-object APO Radial-velocity Exoplanet Large-area Survey (MARVELS) of the Sloan Digital Sky Survey III (SDSS-III) program. This instrument is based on dispersed fixed-delay interferomtry design. It consists of a multi-object fiber-feed, a thermally compensated monolithic fixed-delay interferometer, a high throughput spectrograph and a 4kx4k CCD camera. The spectrograph resolving power is R=11,000 and the wavelength coverage is 500-570 nm. The instrument is capable of measuring 60 stars in a single exposure for high to moderate precision radial velocity (3-20 m/s) measurements depending on the star magnitudes (V=7.6-12). The instrument was commissioned at the SDSS telescope in September 2008 and used to collect science data starting in October 2008. Observations of reference stars show that the measured photon noise limiting errors are consistent with the prediction for most of the measurements.

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Jian Ge, Brian Lee, Nathan De Lee, Xiaoke Wan, John Groot, Bo Zhao, Frank Varosi, Kevin Hanna, Suvrath Mahadevan, Fred Hearty, Liang Chang, Jian Liu, Julian van Eyken, Ji Wang, Rohan Pais, Zhiping Chen, Alaina Shelden, and Erin Costello "A new generation multi-object Doppler instrument for the SDSS-III Multi-object APO Radial Velocity Exoplanet Large-area Survey", Proc. SPIE 7440, Techniques and Instrumentation for Detection of Exoplanets IV, 74400L (19 August 2009); https://doi.org/10.1117/12.826651

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