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 The Lowell Discovery Telescope (LDT), formerly the Discovery Channel Telescope (DCT), is a aperture telescope owned and operated by Lowell Observatory. The LDT was built at a dark sky site in the Coconino National Forest near Happy Jack, Arizo ...

operated by

Lowell Observatory Lowell Observatory is an astronomical observatory in Flagstaff, Arizona, United States. Lowell Observatory was established in 1894, placing it among the oldest observatories in the United States, and was designated a National Historic Landmark ...

. It has a goal to achieve 10 cm/s radial velocity precision. It uses a laser

frequency comb In optics, a frequency comb is a laser source whose spectrum consists of a series of discrete, equally spaced frequency lines. Frequency combs can be generated by a number of mechanisms, including periodic modulation (in amplitude and/or phase) of a ...

(LFC) to calibrate the primary wavelength for EXPRES. EXPRES: A Next Generation RV Spectrograph in the Search for Earth-like Worlds

References

Astronomical instruments Telescope instruments Exoplanet search projects Spectrographs {{astrobiology-stub

See also

References