The Effect Of Ring Pupil On Fabry-Perot Filter

Fabry-Perot(F-P) filter based 2D imaging spectrograph and 2D magnetograph are important instruments in solar physics observation. The 1m New Vacuum Solar Telescope(NVST) and the developing Chinese Giant Solar Telescope(CGST) are probably to use F-P filter as terminal. As F-P filter has very high precision, the full width at half maximum(FWHM) is at picometer scale, there will have many problems in calibration. It's a systemic problem for calibration of F-P filter, optical mounting must be considered. There are two kinds of optical mounting for astronomical F-P filter, collimated and telecentic. After knowing basic parameters of F-P filter, these features can help us deal with problems in calibration.CGST is a next generation project for solar telescope. It's raised by solar physicists of our country.The ring telescope will be the most important program among it.Fabry-Perot(F-P)filter based 2D imaging spectrograph and 2D magnetograph will be important terminal of CGST.The effect of ring pupil on magnetograph and imaging spectrograph will provide a reference for optic and terminal design of CGST.This thesis uses numerical simulation to analyze the effect of ring pupil on F-P filter.Aberration, offset of central wavelength and FWHM are given.These will give a basis for future actual measurement and calibration and also give a reference for optic design of solar telescope with ring pupil.