Hubble Space Telescope | telescope | Spitzer Space Telescope | radio telescope | Space Telescope Science Institute | James Webb Space Telescope | James Clerk Maxwell Telescope | Fermi Gamma-ray Space Telescope | William Herschel Telescope | Ryle Telescope | One-Mile Telescope | Cambridge Low Frequency Synthesis Telescope | Anglo-Australian Telescope | Wide Field Infrared Survey Telescope | South Pole Telescope | Schmidt-Cassegrain telescope | Australia Telescope National Facility | Very Large Telescope | reflecting telescope | Radio telescope | MAGIC (telescope) | Liverpool Telescope | Large Synoptic Survey Telescope | Hexapod-Telescope | Gornergrat Infrared Telescope | Australia Telescope Compact Array | As Seen Through a Telescope | Zenith Telescope | Zenith telescope | The Magnetic Telescope |
He also invented the Pfund telescope, which is a method for achieving a fixed telescope focal point regardless of where the telescope line of sight is positioned, and the Pfund sky compass, which arose from Pfund's studies of the polarization of scattered light from the sky in 1944, and which greatly helped transpolar flights by allowing the determination of the Sun's direction in twilight.