Samuel Rihs

The RISTRETTO project: science objectives, development status

Christophe Lovis, Nicolas Blind, Bruno Chazelas, Muskan Shinde et autres

RISTRETTO is a visible high-resolution spectrograph fed by an extreme adaptive optics (AO) system, to be proposed as a visitor instrument on ESO VLT. The main science goal of RISTRETTO is to pioneer the detection and atmospheric characterisation of exoplanets in reflected …

pt, fr, ch (code pays fourni par la source)

RISTRETTO: assembly and testing of the seven-spaxel, high-resolution, diffraction-limited spectrograph

Léonie Hoerner, Bruno Chazelas, Nathanaël Restori, Christophe Lovis et autres

The RISTRETTO spectrograph is an echelle spectrograph whose design is inspired by radial velocity spectrographs such as HARPS and ESPRESSO. However, it is a seven-spaxel, diffraction-limited spectrograph. It operates under vacuum and temperature control. It is a stable instrument with a stability …

ch, fr (code pays fourni par la source)

On-sky performance of KalAO the swift adaptive optics imager on the 1.2m Euler Swiss telescope in La Silla, Chile

J. Hagelberg, Nathanaël Restori, D. Ségransan, Olivier Guyon et autres

We present first on-sky performance results of KalAO, the natural guide star adaptive optics imager on the 1.2m Swiss telescope in La Silla, Chile. It is designed to reach at least 30% Strehl in order to detect stellar companions as close as …

ch, us, jp, fr (code pays fourni par la source)

RISTRETTO: reflected-light exoplanet spectroscopy at the diffraction limit of the VLT

C. Lovis, Nicolas Blind, Bruno Chazelas, Muskan Shinde et autres

International audience

ch, fr (code pays fourni par la source)

RISTRETTO: Manufacturing of a single-mode visible high resolution spectrograph

Bruno Chazelas, C. Lovis, Nicolas Blind, Ludovic Genolet et autres

The Spectrograph of the RISTRETTO instrument is now currently being manufactured. RISTETTO is an instrument designed to detect and characterize the reflected light of nearby exoplanets. It combines high contrast imaging and high resolution spectroscopy to detect the light of exoplanets. The …

RISTRETTO: manufacturing of a single-mode visible high resolution spectrograph

Bruno Chazelas, C. Lovis, Nicolas Blind, Ludovic Genolet et autres

The Spectrograph of the RISTRETTO instrument is now currently being manufactured. RISTRETTO is an instrument designed to detect and characterize the reflected light of nearby exoplanets. It combines high contrast imaging and high resolution spectroscopy to detect the light of exoplanets. The …

ch, fr (code pays fourni par la source)

HARPS Gets New Fibres After 12 Years of Operations

G. Lo Curto, F. Pepe, Geraldo Severo de Souza Ávila, H. Boffin et autres