Sample spectrum of the spectroscopic binary ξ Ursa Majoris in the Hα region.
File names are in the form:
observation date followed by serial number, followed by file extension .fits, as in YYMMDD.NNN.fits prior to the year 2000 and YYYYMMDD.NNN.fits after.
Below are échelle spectra of ξ UMa in the Hα region. Right click on link to download desired file.