Physics – Optics
Scientific paper
Aug 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009spie.7440e..41z&link_type=abstract
Techniques and Instrumentation for Detection of Exoplanets IV. Edited by Shaklan, Stuart B. Proceedings of the SPIE, Volume 744
Physics
Optics
1
Scientific paper
This paper describes an optical spectrograph design for the Multi-object APO Radial-Velocity Exoplanet Large-area Survey (MARVELS) instrument. This MARVELS instrument is currently installed at the Sloan 2.5m telescope, and is capable of simultaneously monitoring 60 stars at high radial velocity precision for a planet survey. The MARVELS spectrograph consists of an entrance slit (multi-slits), collimator optics, a Volume Phase Holographic (VPH) grating, camera optics and a 4kx4k CCD camera, which with a 160mm diameter collimated beam provides a spectral resolution of R =10000. This spectrograph is transmissive and optimized for delivering high throughput and high image quality over the entire operation bandwidth 500-570nm and the whole 160mmx30mm square shape FOV. The collimator and camera optics (280 mm largest diameter) are all made of standard optical grade glasses. The f/4 input beams from the MARVELS monolithic interferometer are converted to f/1.5 beams on the detector by this spectrograph, and form 120 stellar fringe spectra.
Ge Jian
Groot J. J.
Zhao Bo
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