Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21322601c&link_type=abstract
American Astronomical Society, AAS Meeting #213, #226.01; Bulletin of the American Astronomical Society, Vol. 41, p.473
Astronomy and Astrophysics
Astronomy
6
Scientific paper
Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) is an innovative telescope project with both large aperture (effective more than 4 meters) and wide field of view (5 degrees) to achieve the large scale spectroscopic survey observation. It is a horizontal meridian reflecting Schmidt configuration realized by an active reflecting deformable Schmidt plate. For achieving such an ambitious project with limited budget, both its primary mirror (6.67m X 6.05m) and Schmidt plate (5.74m X 4.4m) are segmented. Its large focal plane accommodates up to 4000 fibers, by which the collected light of distant and faint celestial objects down to 20.5 magnitudes is fed into the spectrographs, promising a very high spectrum acquiring rate of more than ten-thousands of spectra per night.This paper gives a general introduction on LAMOST project, its technical achievements and recent progress. Including verification on each sub-system in its early installation and test stage in 2007, which is with just its partial aperture, more than 200 optical fibers and one spectrograph. The scientific commissioning has been done and some preliminary results have been obtained. Then the engineering work on the whole telescope with 16 spectrographs and 4000 optical fibers in its focal plane have completed on site in August 2008. The first light of LAMOST with two to three thousands spectra during each observation was in late September of 2008.
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