Large-sky-area multiobject fiber spectroscopic telescope (LAMOST) and its key technology

Ding-qiang Su; Xiangqun Cui; Ya-nan Wang; Zheng qiu Yao

doi:10.1117/12.319250

25 August 1998 Large-sky-area multiobject fiber spectroscopic telescope (LAMOST) and its key technology

Ding-qiang Su, Xiangqun Cui, Ya-nan Wang, Zheng qiu Yao

Proceedings Volume 3352, Advanced Technology Optical/IR Telescopes VI; (1998) https://doi.org/10.1117/12.319250
Event: Astronomical Telescopes and Instrumentation, 1998, Kona, HI, United States

Abstract

The optical system of LAMOST is a special reflecting Schmidt system. It has an aperture of 4 m, f ratio of 5 and a 5 degree(s) field of view. The main optical axis is fixed on the meridian plane and tilted 25 degree(s) to the horizontal from south to north. The celestial objects were observed for 1.5 hours when they pass through the meridian. The reflecting Schmidt plane, M_A, and the spherical mirror, M_B, are segmented mirrors. M_B is fixed on the foundation. The shape of the reflecting Schmidt plate has to be changed with different declination (delta) and in the tracking process. This is achieved with active optics. About 4000 optical fibers are planed to put on the focal surface. Some key technologies for LAMOST have been studied and presented in this paper: the calculation and testing method for thin mirror and segmented mirror active optics; the preliminary calculation and the experiment for active optics; the simulated calculation for optical image quality in 1.5 hours observation; a preliminary design of the alt-azimuth mounting and tracking system of M_A.

Citation Download Citation

Ding-qiang Su, Xiangqun Cui, Ya-nan Wang, and Zheng qiu Yao "Large-sky-area multiobject fiber spectroscopic telescope (LAMOST) and its key technology", Proc. SPIE 3352, Advanced Technology Optical/IR Telescopes VI, (25 August 1998); https://doi.org/10.1117/12.319250

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available