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The Fan Observatory Bench Optical Spectrograph (FOBOS)

Jeffrey D. Crane·Steven R. Majewski·Richard J. Patterson·Michael F. Skrutskie·Elena Y. Adams·Peter M. Frinchaboy
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Abstract

The Fan Observatory Bench Optical Spectrograph (FOBOS) is intended for single-object optical spectroscopy at moderate resolution (R~1500-3000) using a fiber-fed, bench-mounted design to maintain stability. Whenever possible, the instrument uses off-the-shelf components to maintain a modest cost. FOBOS supports Galactic astronomy projects that require consistently well-measured (~5 km/sec) radial velocities for large numbers of broadly distributed and relatively bright (V<14) stars. The spectrograph provides wavelength coverage throughout the optical spectrum, although the instrument design was optimized for use in the range 470-670 nm. Test data indicate that the instrument is stable and capable of measuring radial velocities with precision better than 3 km/sec at a resolution of R~1500 with minimal calibration overhead.

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Jeffrey D. Crane, Steven R. Majewski, Richard J. Patterson, Michael F. Skrutskie, Elena Y. Adams, Peter M. Frinchaboy. 2005-02-23. The Fan Observatory Bench Optical Spectrograph (FOBOS). https://doi.org/10.1086/429683

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