EXPRES

Short description: American astronomical instrument

The EXtreme PREcision Spectrograph (EXPRES) is an optical fiber fed echelle instrument designed and built at the Yale Exoplanet Laboratory to be installed on the 4.3-meter Lowell Discovery Telescope operated by Lowell Observatory. It has a goal to achieve 10 cm/s radial velocity precision. It uses a laser frequency comb to calibrate the primary wavelength for EXPRES.[1]

## See also

* ESPRESSO spectrograph
* HARPS3

## References

1. ↑ Jurgenson, C.; Fischer, D.; McCracken, T.; Sawyer, D.; Szymkowiak, A.; Davis, A.; Muller, G.; Santoro, F. (2016). "EXPRES: A next generation RV spectrograph in the search for earth-like worlds". Ground-based and Airborne Instrumentation for Astronomy VI. 9908. pp. 99086T. doi:10.1117/12.2233002.

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