The optical design of MARVELS spectrograph

Bo Zhao; Jian Ge; John Groot

doi:10.1117/12.826613

19 August 2009 The optical design of MARVELS spectrograph

Bo Zhao, Jian Ge, John Groot

Proceedings Volume 7440, Techniques and Instrumentation for Detection of Exoplanets IV; 74401E (2009) https://doi.org/10.1117/12.826613
Event: SPIE Optical Engineering + Applications, 2009, San Diego, California, United States

Abstract

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.

Citation Download Citation

Bo Zhao, Jian Ge, and John Groot "The optical design of MARVELS spectrograph", Proc. SPIE 7440, Techniques and Instrumentation for Detection of Exoplanets IV, 74401E (19 August 2009); https://doi.org/10.1117/12.826613

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