Maunakea's Controversial Telescopes Are Getting New Management
Space.com's top 20 Prime Day deals: telescopes, binoculars, cameras and more
David Lunt revolutionized amateur astronomy by introducing the first hydrogen-alpha solar telescopes for consumers in the late 1990s. H-alpha filters had been available before, but they required electronic temperature control to maintain their narrow passpands, making them cumbersome to use
