Eshel Observation, DeniSe instrument 0,355m f5 schmidt cassegrain reflector, spectrograph eshel R=11000, disp 0,1A/pix, wavelenght domain from order 54 to 28 is 4130A-8150A. Zip archive of non normalized échelle orders in Fit format (standart preprocessing-Offet-Dark-Flat-),...

Here is a study of the HeII4686 profile variation depending of the exposure time of WR134, a wolf rayet star subject of a 2013 pro am campaign from the Convento group The SNR requirement on 1hour exposure for this campaign is about 200. The resolution...