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Three green lasers being fired at a single spot in the sky from the Starfire Optical Range. A FASOR used at the Starfire Optical Range for LIDAR and laser guide star experiments is tuned to the sodium D2a line and used to excite sodium atoms in the upper atmosphere .
Furthermore, the Automated Planet Finder at Lick Observatory is searching for optical signals coming from laser transmissions. The massive data rates from the radio telescopes (24 GB/s at Green Bank) necessitated the construction of dedicated hardware at the telescopes to perform the bulk of the analysis. [60]
Powerful laser guide star system at the Paranal Observatory. The actual laser guide star is the small spot above the apparent end of the laser beam. A laser guide star is an artificial star image created for use in astronomical adaptive optics systems, which are employed in large telescopes in order to correct atmospheric distortion of light (called astronomical seeing).
The radio telescopes are sensitive enough to detect "Earth-leakage" levels of radio transmission from stars within 5 parsecs, [4] and can detect a transmitter of the same power as a common aircraft radar from the 1,000 nearest stars. [12] The Green Bank Telescope began operations in January 2016, and the Parkes Telescope from October 2016. [4]
The Automated Planet Finder (APF) Telescope a.k.a. Rocky Planet Finder, [1] is a fully robotic 2.4-meter optical telescope at Lick Observatory, situated on the summit of Mount Hamilton, east of San Jose, California, USA. [2] It is designed to search for extrasolar planets in the range of five to twenty times the mass of the Earth. The ...
The HARPS can attain a precision of 0.97 m/s (3.5 km/h), [2] making it one of only two instruments worldwide with such accuracy. [citation needed] This is due to a design in which the target star and a reference spectrum from a thorium lamp are observed simultaneously using two identical optic fibre feeds, and to careful attention to mechanical stability: the instrument sits in a vacuum vessel ...
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