HERCULES: A High-resolution Spectrograph for Small to Medium-sized Telescopes

Details HERCULES: A High-resolution Spectrograph for Small to Medium-sized Telescopes HERCULES: A High-resolution Spectrograph for Small to Medium-sized Telescopes

May 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aspc..289...11h&link_type=abstract

The Proceedings of the IAU 8th Asian-Pacific Regional Meeting, Volume I, held 2-5 July 2002 at National Center of Sciences, Hito

Astronomy and Astrophysics

Astronomy

1

Scientific paper

The High Efficiency and Resolution Canterbury University Large Echelle Spectrograph (HERCULES) is a fibre-fed echelle spectrograph that has been in operation at the Mount John University Observatory for just over one year. her can capture the spectrum from 380 nm to 880 nm on a single 50-mm square CCD. Resolving powers of 40,000 to 80,000 are possible using different fibres. The spectrograph is designed to achieve high efficiency when the seeing is well matched to the image scale on the fibre input (up to 20% in 1 arcsec seeing), and high stability is achieved by having the spectrograph installed inside a vacuum tank in a thermally isolated environment. Radial velocities with a precision of < 10 ms ^-1 are routinely possible.

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