LAMOST

LAMOST (Large Sky Area Multi-object Fibre Spectroscopic Telescope or Guo Shoujing Telescope) is a 4/6 meter (non-circular) Schmidt reflector telescope (a variant on a Schmidt camera) for efficient spectroscopy of galaxies and Milky Way stars. It focuses on a 1.75-meter-diameter focal plane at which the ends of 4000 repositionable fibers are located, which lead to 16 spectrographs. It began service in 2008, aimed at a five-year surveying project, (the LAMOST Survey) organized as two sub-surveys:

• LEGUE, for LAMOST Experiment for Galactic Understanding and Evolution.
• LEGAS, for LAMOST Extragalactic Survey.

LAMOST II is a subsequent effort, with better spectral resolution. Numbered LAMOST data releases have been made available periodically, each with multiple successive versions. Among them, LAMOST DR5 was based upon five years of data collection. As of 5/2024, an initial version of LAMOST DR12 is available.