H-alpha detail, high resolutions spectroscopic observations with L200 spectrograph and 1800 l/mm grating (R > 10000) are made in the evening/night of 6/7 june: 66 Ophiuchi , HD 202904 and also VV Cep (not a Be-star).
H-alpha detail, high resolutions spectroscopic observations with L200 spectrograph and 1800 l/mm grating (R > 10000) are made in the evening/night of 6/7 june: 66 Ophiuchi , HD 202904 and also VV Cep (not a Be-star).