MAROON-X: A Radial Velocity Spectrograph for the Gemini Observatory

TL;DR

MAROON-X is a high-precision radial velocity spectrograph designed for the Gemini Observatory, capable of sub-meter per second calibration, enhancing US access to advanced exoplanet detection tools.

Contribution

This paper introduces the design, construction, and performance testing of MAROON-X, a novel RV spectrograph with improved calibration capabilities for large telescopes.

Findings

Achieved sub-m/s calibration stability in lab tests

Added a new red wavelength arm and science-grade detectors

Demonstrated potential for even better calibration accuracy

Abstract

MAROON-X is a red-optical, high precision radial velocity spectrograph currently nearing completion and undergoing extensive performance testing at the University of Chicago. The instrument is scheduled to be installed at Gemini North in the first quarter of 2019. MAROON-X will be the only RV spectrograph on a large telescope with full access by the entire US community. In these proceedings we discuss the latest addition of the red wavelength arm and the two science grade detector systems, as well as the design and construction of the telescope front end. We also present results from ongoing RV stability tests in the lab. First results indicate that MAROON-X can be calibrated at the sub-m/s level, and perhaps even much better than that using a simultaneous reference approach.