title: Special configuration of a very large Schmidt telescope for extensive astronomical spectroscopic observation.
abstract: A special reflecting Schmidt telescope is used to observe celestial objects. The telescope has an aperture of 4m, f ratio of 5, and a 5° field of view. Its optical axis is fixed and tilted 25° to the horizontal that runs from south to north. The celestial objects were observed for 1.5 h as they passed through the meridian. The shape of the reflecting Schmidt plate has to be changed with each different declination δ and in the tracking process. This is achieved with active optics. The sky area to be observed is -10° ≤ δ ≤ +90°. There are plans to place ~4000 optical fibers on the telescope focal surface that will lead to a dozen spectrographs.
authors.forename: S G
authors.initials: SG
authors.lastname: Wang
authors.forename: D Q
authors.initials: DQ
authors.lastname: Su
authors.forename: Y Q
authors.initials: YQ
authors.lastname: Chu
authors.forename: X
authors.initials: X
authors.lastname: Cui
authors.forename: Y N
authors.initials: YN
authors.lastname: Wang