EDP Sciences
Free access
Issue
A&A
Volume 390, Number 2, August I 2002
Page(s) 801 - 807
Section Instruments, observational techniques and data processing
DOI http://dx.doi.org/10.1051/0004-6361:20020740


A&A 390, 801-807 (2002)
DOI: 10.1051/0004-6361:20020740

Optimum imaging observation wavelength selection for astronomical telescopes with partial correction adaptive optics

Changhui Rao and Wenhan Jiang

Adaptive Optics Laboratory, Institute of Optics and Electronics, Chinese Academy of Sciences, PO Box 350, Shuangliu, Chengdu 610209, Sichuan, PR China

(Received 20 June 2001 / Accepted 15 April 2002 )

Abstract
In order to maximize the compensation potential of adaptive optics system for atmospheric turbulence, an appropriate observing wavelength should be selected on the basis of system capability and the working conditions to improve the optical resolution of astronomical telescopes. Based on the analysis of the wavefront residual error of the adaptive optics system, the optimum imaging observation wavelengths giving maximum imaging resolution of a partial correction adaptive optics system are derived for short-exposure and long exposure imaging respectively. The developed method is used to evaluate the optimum observing wavelength and the corresponding imaging resolution for the 61-element adaptive optical system at the 1.2 m telescope of the Yunnan Observatory.


Key words: telescopes -- atmospheric effects -- instrumentation: adaptive optics -- methods: observational

Offprint request: Changhui Rao, chrao@sc.homeway.com.cn




© ESO 2002