... About ATNF overview . ... Parkes radio telescope . ... The pseudo-equivalent widths, which we will call spectral indices, are computed using the ratio of the flux in a 30 - 40 У?Тљ index passband to a continuum defined by connecting a straight line between the average flux levels in a red and blue side band, each also 30 - 40 У?Тљ wide. ... A second source of uncertainty in comparing the data sets is the difference in physical dimension being sampled in the Coma and high redshift galaxies. ... Index...