The sweeping river of stars that is the Milky Way ribbons over Cerro Paranal in Chile, home to the European Southern Observatory’s Very Large Telescope (on the peak to the left) and the Visible and Infrared Survey Telescope for Astronomy, VISTA (on the peak to the far right).
When measuring the Hubble constant by mapping the properties of the cosmic microwave background radiation to the standard model of cosmology, astronomers get a value of about 69 kilometres per second per megaparsec.
comNik Szymanek recently spent three consecutive nights testing the capabilities of Software Bisque’s new edition of The Sky, namely The Sky Imaging Edition. On night two, he finds out how well it autofocuses and autoguides his telescope.
There are very few deep-sky sights that can equal, let alone surpass, the magnificence of a great globular cluster filling the field of view of a high-power eyepiece, with myriad sparking suns crammed together and all vying for attention.