... Chountonov , Yu.V . ... Th e CC D wa s teste d for bein g use d i n spectroscop y an d magnetometr y wit h long-focu s camer a I o f MS S whic h ha d bee n use d befor e for obtainin g high-dispersio n norma l photographi c an d Zeema n spectra , an d wher e th e photoelectri c Fabry-Pero t magnetomete r (Chountonov , 1982 ) ha d bee n installed . Unde r a goo d seein g o f abou t 1 " i t wa s possibl e t o obtai n 2 0 mi n exposur e Zeema n spectr a of CV n wit h a spectra l resolutio n o f 0.1 . ...