Telescope instruments

high-precision echelle spectrograph

reflecting telescope in Chile

instrument on board a space telescope

thumb|ESPRESSO spectrograph concept at the Preliminary Design Review thumb|ESPRESSO spectrograph optical design at the Preliminary Design Review thumb|ESPRESSO successfully made its first observations in November 2017.

imaging instrument for the Gemini South Telescope in Chile

integral field spectrograph installed at the Very Large Telescope

__NOTOC__ HARPS-N, the High Accuracy Radial velocity Planet Searcher for the Northern hemisphere is a high-precision radial-velocity spectrograph, installed at the Italian Telescopio Nazionale Galileo, a 3.58-metre telescope located at the Roque de los Muchachos Observatory on the island of La Palma, Canary Islands, Spain.

A dynameter is an instrument that measures the magnification of a telescope. It is usually a double-image micrometer used to measure the diameter of the image of the object glass. The magnifying power is found by comparing the actual diameter of the glass with the measured diameter of the image of the glass. thumb|350px|left|thumb|350px|center|

adaptive optics system and coronagraphic facility at the Very Large Telescope