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.
@article{arxiv.astro-ph/0502492,
title = {The Fan Observatory Bench Optical Spectrograph (FOBOS)},
author = {Jeffrey D. Crane and Steven R. Majewski and Richard J. Patterson and Michael F. Skrutskie and Elena Y. Adams and Peter M. Frinchaboy},
journal= {arXiv preprint arXiv:astro-ph/0502492},
year = {2009}
}
Comments
Accepted for publication in the May 2005 issue of the PASP