WIYN 3.5-metre Telescope, Arizona, USA
McGraw-Hill Telescope interior, Arizona, USA
WIYN 0.9-metre telescope at KPNO
Mayall 4-metre telescope at KPNO
McMath-Pierce Solar Telescope, Arizona, USA
WIYN 3.5-metre telescope dome at KPNO
Star trails over Mayall 4-metre telescope at KPNO
Kitt Peak National Observatory domes
Kitt Peak National Observatory dome
Hydra telescopic spectrograph device focal plane
Veil Nebula supernova remnant
Kitt Peak National Observatory
Evolution of Tucson city lights, 1959 to 2003
Kitt Peak National Observatory telescopes
T80-South Telescope interior, Chile
Halo over Kitt Peak National Observatory, Arizona, USA
Elephant's Trunk Nebula, optical image
Supernova remnant G70.5+1.9, optical image
Galaxy cluster, composite image
Kitt Peak Observatory
Open star cluster M39
European Extremely Large Telescope
Blanco 4-metre telescope dome at CTIO
McMath-Pierce Solar Telescope
Very Large Array antenna
300-foot Green Bank radio telescope, 1962
300-foot Green Bank radio telescope construction, 1961
Total lunar eclipse
Flaming Star Nebula
Galaxy NGC 4753
Mayall 4-meter Telescope at night, Arizona, USA
Kitt Peak National Observatory, low angle view
Tatel Telescope under construction, 1958
Polishing radio telescope bearing
100-metre Green Bank Telescope
Tatel radio telescope control room, 1960s
Nicholas U Mayall Telescope during a total lunar eclipse
VISTA telescope
Very Large Array, USA
Very Large Array antenna, USA
Bracewell Sundial at Very Large Array, USA
Very Large Array antenna and railway
Green Bank Telescope and farm buildings
Green Bank Telescope and farm building
Arizona Radio Observatory at night
Andromeda galaxy
Abell 520 galaxy cluster, composite image
TRAPPIST telescope, La Silla, Chile
Disassembling a radio telescope, 1960s
Jansky radio antenna replica
Hubble Space Telescope, artwork
Kitt Peak National Observatory during a lunar eclipse
European Extremely Large Telescope mirror support
First NRAO radio telescopes, 1950s
Observatory telescope
Dark Energy Camera
GranTeCan telescope
Very Large Telescope mirror testing
Tatel radio telescope
University of Hawaii & UKIRT telescope domes
United Kingdom Infrared Telescope on Mauna Kea
Messier 87 galaxy, VLT image
Merged galaxies
Nebula NGC 6164-5 and star HD 148937
Starbirth region NGC 2467
Planetary nebula M2-9
Planetary nebula NGC 246
Planetary nebula NGC 5189
Supernova in NGC 1559
Robert's Quartet, interacting galaxies
Lagoon Nebula
Lagoon Nebula, M8
Triangulum Galaxy
ALMA radio astronomy telescopes
Very Large Array radio antenna
Herschel space telescope construction
Allen Telescope Array
New Technology Telescope, Chile
Milky Way over Cerro Armazones
Collapsed 300-foot Green Bank radio telescope, 1988
140-foot Green Bank radio telescope construction, 1964
Green Bank Telescope, USA
Computing for radio astronomy, 1960s
Dark Energy Camera telescope simulator
Very Large Array antennas, USA
SEST radio telescope at La Silla, Chile
La Silla Observatory, Chile
Artificial laser stars at the VLT over Paranal
Cerro Tololo Inter-American Observatory
ALMA telescopes under stars
Green Bank Interferometer radio telescopes
Long Wavelength Array radio antennas
Kitt Peak Public Observatory
Tatel radio telescope and US astrophysicist Frank Drake
Lowell Observatory, Arizona, USA
Lloyd Berkner, founding acting director of NRAO
VISTA telescope, Chile
Observatories at Mauna Kea, with comet Hale-Bopp
Keck I and II observatories on Mauna Kea, Hawaii
James Webb Space Telescope mirror
Armagh 10-inch refractor telescope, 1885
Large Binocular Telescope Interferometer
Colliding galaxies NGC 520
Spiral galaxy NGC 1097
VLT Laser Guide Star Facility
Telescope at an observatory with the Milky Way
South Pole telescope
South Pole Telescope and new ground shield, 2012
US Naval Observatory refractor telescope, 19th century
15-inch equatorial telescope at US Naval Observatory
Milky Way over La Silla observatory
Stars over La Silla observatory, Chile
Paranal Observatory under star trails
Milky Way over Palomar Observatory
SOFIA airborne observatory
Very Large Telescope mirror inspection
Hale-Bopp comet and telescope domes
Star trails over La Silla, Chile
Draper's 28-inch telescope, 19th century
Lowell Observatory telescope
Comet Holmes, November 2007, CHFT image
Supernova remnant SN1006, composite image
Gemini North telescope, Hawaii
Very Large Telescope, Chile
GranTeCan telescope, La Palma