An Advanced Fiber Optic Echelle Spectrograph for Asteroseismology Noyes, R. W. ; Brown, T. M. ; Horner, S. ; Korzennik, S. ; Nisenson, P. Abstract Publication: GONG 1992. Seismic Investigation of the Sun and Stars Pub Date: January 1993 Bibcode: 1993ASPC...42..485N