WR134 conveto

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-), calibration on a thorium argon lamp, instrumental response corrected with Vega or Altair or alpha Leo. No heliocentric and no telluric corrections. Observatory coordinates Lat 43 37 30 Long E03 48 12 elevation 70m ... [Lire la suite]

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 must be better than 1A, R5000 at HeII4686. Here is an individual order of an echelle spectra taken during the night of Dec, 12th. The sky conditions were excellent and the object was at 80° high at the beginning of exposures. 2H40 exposure were taken, under good seing and transparency.... [Lire la suite]