Lick Observatory telescope, 1887
Armagh 10-inch refractor telescope, 1885
Telescope and Orion nebula
Telescope optical instrument that aids in observation of remote objects as stars, vector illustration isolated on white. Spy-glass icon with shadow. Telescope Optical Instrument Helps in Observation
US Naval Observatory refractor telescope, 19th century
15-inch equatorial telescope at US Naval Observatory
Eclipse camera, 1871
Transit circle, Edinburgh Observatory
James Webb Space Telescope simulator testing
Telescope, artwork
Draper's 28-inch telescope, 19th century
Dark-field micrometer, 19th century
Hough's printing chronograph, 1870s
Burnham's micrometer, 19th century
36 inch telescope at the Lick Observatory, USA
15-inch reflector telescope, 1887
Industrial metal-bending press, 1910s
European Extremely Large Telescope
Microscope in a laboratory
Construction of a secondary mirror for the VLT
ESPRESSO spectrograph testing
Gran Telescopio Canarias, Canary Islands
Very Large Array, USA
Very Large Array antenna, USA
Bracewell Sundial at Very Large Array, USA
Very Large Array antenna
Volume phase holographic grating
Hydra telescopic spectrograph device focal plane
Milky Way over La Silla observatory
Stars over La Silla observatory, Chile
Mount Wilson Observatory, USA
Milky Way over Mount Wilson Observatory
First NRAO radio telescopes, 1950s
Engineering safety laboratory, 1950s
Photoheliograph, 1888
Green Bank Telescope, USA
Hands adjusting eyepiece of binoculars
Historical astronomical instruments
15-inch telescope, Edinburgh Observatory
GREAT sensor on SOFIA telescope, 2011
SOFIA airborne observatory
SOFIA telescope model
SOFIA airborne observatory model
James Webb Space Telescope mirror, composite image
SOFIA airborne observatory in flight
Large Binocular Telescope Interferometer
European Extremely Large Telescope mirror support
Blanco 4-metre telescope dome at CTIO
Observatory telescope
Woman looking through eyepiece of finderscope
Jet-assisted take-off (JATO) research, 1940s
Tesla's Colorado Springs laboratory
Chandra observatory onboard space shuttle
Chandra observatory in orbit
ALMA telescopes under stars
300-foot Green Bank radio telescope, 1962
100-metre Green Bank Telescope
Green Bank Interferometer radio telescopes
Grote Reber's first radio telescope, 1930s
Early Dutch radio astronomy after Second World War
Jansky radio antenna replica
Long Wavelength Array radio antennas
Transit circle observations, 1924
Time Service at US Naval Observatory, 1915
Time Service at US Naval Observatory, 1935
Time determination at US Naval Observatory
US Naval Observatory time signalling antennas
Mir Space Station
18th Century astronomical clock
Herschel space telescope construction
Very Large Array antenna and railway
Paranal Observatory under star trails
Matterhorn and observatory
Hubble Space Telescope, artwork
Gaia space probe testing
South Pole Telescope and new ground shield, 2012
ATHENA X-ray space telescope mirror module
WIYN 0.9-metre telescope at KPNO
T80-South Telescope interior, Chile
McGraw-Hill Telescope interior, Arizona, USA
WIYN 3.5-metre Telescope, Arizona, USA
Meridian circle instrument, 1880s
Comet Swift-Tuttle, April 1892
Pluto discovery glass plate
Mills Observatory, Dundee
Light microscopy
Milky Way over GranTeCan telescope
Lowell Observatory telescope
Solar eclipse observers, 1860
Lord Lindsay's eclipse expedition, 1870
Milky Way over the Very Large Telescope, Chile
VLT auxiliary telescopes, Paranal Observatory, Chile
Milky Way over Cerro Tololo observatory, Chile
Milky Way over Paranal Observatory, Chile
Disassembling a radio telescope, 1960s
Radio telescope, Parkes observatory
Superconducting amplifier
Polishing radio telescope bearing
James Webb Space Telescope assembly
William Swann, US physicist
Globular star cluster NGC 362
HARPS planet-finding instrument spectrum
Assortment of milling drills for tool-making
NICER mission preparations, July 2015
Assortment of drills and machine for tool-making in background
Machine for tool-making
Moon exhibition model, Germany
Refracting telescope
Binocular microscope
Strasbourg astronomical clock, France
25-inch Newall refractor telescope, 1873
Tatel radio telescope control room, 1960s
Deep Space 1 ion engine
3D measurement of an object
Tatel Telescope under construction, 1958
300-foot Green Bank radio telescope construction, 1961
Transit circle tracking device, 20th century
Dark Energy Camera telescope simulator
SOFIA airborne observatory control station
Radio telescopes, illustration
Radio telescope, illustration
Submilllimeter Array telescopes, Hawaii
Herschel Space Observatory construction
Submillimeter Array telescopes, Hawaii
South Pole telescope
Dark Energy Camera
Milky Way and SEST telescope
Artificial laser stars at the VLT over Paranal
Star trails over ESO telescopes at La Silla
ESO 3.6-metre telescope interior
Allen Telescope Array
Green Bank Telescope and farm buildings
Green Bank Telescope and farm building
Astrotourism in the Atacama Desert
Milky Way over Palomar Observatory
Milky Way over Cerro Armazones
Isaac Newton telescope at night