... The spectrum of the brightest star, our Sun, shows several dark gaps perpendicular to the flow of it’s colours (figure 1). These so called spectral absorption lines where discovered in 1802 by the English scientist William Wollaston. ... Some stars as Pollux show a spectrum similar to that of our sun with strong Ca II and Fe II lines, others as Sirius or Vega show strong absorption lines of hydrogen, others, as Mira show very complicated spectra due to molecular absorption lines (see figure 5). ...

... If you still have a question or problem, post it to the comp.sys.hp.mpe newsgroup or the associated HP3000-L mailing list , where many Apache users and several contributors are more than willing to answer new and obscure questions about using Apache on MPE/iX. groups.google.com's newsgroup archive offers easy browsing of previous questions. ... MPELX51C - enhances the kill() function so that Apache can use it when the Apache parent UID is different from the Apache children UID (strongly recommended)...