Sample spectrum of the spectroscopic binary HD 18778 in the Hα region (reprocessed version).
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 HD 18778 in the Hα region. Right click on link to download desired file.