The spectrum has been observed by F. Kerber in April 1996 with the 2.5-m duPont Telescope at Las Campanas Observatory, Chile. The TEK1 CCD detector gives a spectral resolution of 2Å/pixel in the two ranges 3800 to 5800 and 4800 to 6800 Å (exposure time 1200 sec each). The raw data were calibrated using the standard star LTT 3864 from the list of Hamuy et al. (1992 and 1994). A He-Ne lamp was used for wavelength calibration. The narrow band image was observed by C. Zanin with the EFOSC2 CCD detector and the 2.2-m ESO Telescope at La Silla, Chile in January 1997. The filter was centered at nm, with an FWHM of 6.2 nm. All the reductions were done using MIDAS package.
© European Southern Observatory (ESO) 1999
Online publication: November 16, 1999