Sole Birefringent Filter for Various Interesting Lines

摘要

In this paper there is described a Sole birefringent chain narrowbandpass filter that allows observation in more than 30 interesting spectral lines (Ha, Ca II K, H13, Hy, D 1 , D 3 etc.). A solar spectrographic telescope meeting demands for constant solar image scale in wavelength from 380 nm to 760 nm is also presented. This telescope equipped with the proposed filter is designed as a unit providing a top quality imaging.