Optical system for extremely large spectroscopic survey telescope

Understand

This article presents research work on a spectroscopic survey telescope.

• Our idea is as follows: for such a telescope, a pure reflecting optical system is designed, which should have an aperture and a field of view (FOV) both as large as possible and excellent image quality, and then a strip lensm (lens-prism) atmospheric dispersion corrector (S-ADC) is added, only for correcting the atmospheric dispersion.
• Given the fund limitation and the simplicity of scaling up, some 12-m telescopes are designed as examples.
• Su, Korsch, and Meinel put forward the four-mirror Nasmyth systems I and II, which are used in this paper.