The CARMENES high-precision spectrometer started operations in January 1, 2016 at the 3.5-m telescope of the Calar Alto Observatory. Since then, the CARMENES consortium is carrying out a 750-night survey searching for exoplanets around M dwarf stars, preferably in their habitable zones, using the radial velocity technique. CARMENES has the unique capability of providing continuous...
The Infrared Doppler (IRD) instrument is a fiber-fed high-resolution near-infrared spectrometer for the Subaru 8.2-m telescope covering the Y-, J-, and H-bands simultaneously with a spectral resolution of ~70,000. It aims at achieving measurement precision of 1-2 m/s in radial velocity (RV) with a very stable spectrograph and an original laser frequency comb. The most effective...
The near-infrared spectropolarimeter SPIRou is now in operation on the 3.6-m Canada-France-Hawaii telescope and recently started its survey. Thanks to its unique combination of a wide simultaneous spectral domain (0.98-2.35 μm, YJHK bands), a high throughput (>10% in H and K bands), a resolving power of 70’000, a radial-velocity precision close to 2 m/s, and polarimetric capabilities, SPIRou...
The NIR high resolution spectrograph GIANO, working in the wavelength range from 0.97 to 2.45 microns at a resolution of 50,000, was installed and commissioned at the Nasmyth-A focal station of the TNG in 2014. Through the GIARPS project, aimed to the simultaneous use of GIANO and HARPS-N spectrographs, GIANO was moved to the Nasmyth-B (re-naming the instrument GIANO-B) and modified in its...
iLocater is a next-generation precision radial velocity spectrograph under development for the Large Binocular Telescope (LBT). The instrument has three major subsystems which are currently undergoing simultaneous development: a single-mode fiber fed high-resolution (R~150,000-240,000) NIR echelle spectrograph, an adaptive optics fed fiber-injection system, and a fabry-perot etalon based...
We present our radial-velocities (RVs) with the iSHELL spectrograph at the NASA Infrared Telescope facility. Replacing the 25 year old CSHELL instrument, iSHELL offers improvements in spectral grasp (~40x), resolution (70,000 versus 46,000), throughput, optics, and detector characteristics. Our primary goal with iSHELL is to characterize the precise radial-velocity performance of the methane...
