You are here

Telescopes and Modern Observatories

A telescope is an optical instrument that gathers and focuses light into a camera, CCD, spectrograph, or an astronomer’s eye. Two major types of telescopes dominate astronomy: reflectors and refractors. Many of the world’s largest telescopes are housed at observatories: The entire complex of buildings, telescopes, equipment, and staff involving scientific astronomical observations. Small observatories might consist of just one telescope situated in a dome, one instrument and computer, and one observer. McDonald Observatory is an example of a major observatory, and consists of five major telescope in five different domes, numerous instruments, computers, living quarters, outbuildings, astronomers, and engineers.

Resources

Astronomers and Observatories June 10, 2010

Publicly Accessible Telescope Viewing May 14, 2010

Featured Images

IceCube detects a neutrino from a blazar

Cold Fire August 9, 2018
An odd telescope design of the 18th century.

Dancing 'Round the Maypole May 1, 2018
Edwin Hubble at the 100-inch Hooker Telescope

First View November 2, 2017
Artist's concept of Giant Magellan Telescope

New Giant August 9, 2017
IC 4406 planetary nebula

Beautiful Demise August 5, 2017
Evening view of Hobby-Eberly Telescope at McDonald Observatory

A New Era April 9, 2017
A swirl of stars at the center of the Milky Way contains a supermassive black hole

Looking for Darkness April 4, 2017
Artist's concept of Kepler Space Telescope

Little Telescope, Big Discoveries September 12, 2016
Laser adaptive optics system in Chile

Death Telescope? April 27, 2016
Artist's concept of completed Magdalena Ridge Observatory Interferometer

Running Interference February 11, 2016
View of the underground Soudan Laboratory

Underground Astronomy January 26, 2015
View of a newly forming planetary system around the young star HL Tauri

Planet Tracks November 6, 2014
Postcard of the historic Elgin Watch Company Observatory in Illinois

Star Time October 25, 2014
An early view of the primary mirror of McDonald Observatory's first telescope

Seeing the Light December 31, 2013
Telescopes at the south pole

Antarctic Adventures November 13, 2013
Images of solar telescopes around the world

Fanciful Eyes June 3, 2013
Hubble Space Telescope, May 2009

Recalibrating May 6, 2013
HESS telescopes in Namibia, which study the gamma-ray universe

Extreme Telescope November 8, 2012
Yerkes Observatory in Wisconsin is home to the world's largest refractor

Still Going August 18, 2011
Artist's concept of upgraded Hobby-Eberly Telescope

Facelift for Science June 3, 2011
Primary mirror of the Hobby-Eberly Telescope, McDonald Observatory

A Big Bottle of Windex? May 11, 2011
A fish-eye image shows a laser firing from the Gemini North telescope in Hawaii.

Zapping the Sky May 17, 2010

Turning On, Tuning In April 12, 2010

Cold Astronomy January 13, 2010

Radio Programs

South-Pole Astronomy Science at the bottom of the world August 9, 2018

New Telescope A new eye on the radio sky August 8, 2018

Hunting Aliens Still no signs of ET July 13, 2018

Selective Viewing Selecting the right targets July 12, 2018

George Ellery Hale One man, four giant telescopes June 28, 2018

May Day Dancing around the maypole May 1, 2018

New Tools Digging through piles of data April 25, 2018

Taking Control From cages to computers April 24, 2018

Streamers New arrivals in the Milky Way April 3, 2018

Small But Big Small telescopes, big science March 29, 2018

Neutrinos Zipping through the universe November 8, 2017

First Look A first glimpse at a new universe November 2, 2017

Last Discovery Picking out a new moon September 9, 2017

Giant Magellan Telescope II Getting to know distant planets August 10, 2017

Giant Magellan Telescope Building a telescopic behemoth August 9, 2017

HET Upgrade Upgrading a giant telescope August 8, 2017

Spying on Supernovae Keeping many eyes on exploding stars May 22, 2017

Event Horizon Telescope Looking for a giant black hole April 4, 2017

Exoplanets Big discoveries from little telescopes September 12, 2016

Big Dish Dishing up a giant new telescope September 11, 2016

Zenith Looking straight up August 27, 2016

Black Hole Outline Outlining a supermassive black hole June 27, 2016

Van Vleck Observatory Re-dedicating a century-old observatory June 15, 2016

Data Mining An embarrassment of cosmic riches April 29, 2016

Time-Domain Astronomy Digging into the archives April 28, 2016

Robotic Telescopes Robots take over the telescopes April 26, 2016

Lacy Galaxies Finding big but hazy galaxies March 31, 2016

Interferometry V Looking at giant black holes February 12, 2016

Interferometry IV A whole passel of telescopes February 11, 2016

Interferometry III Adding up the telescopes February 10, 2016

Interferometry II Sharpening the view of the stars February 9, 2016

Confirmation Particles from the heart of the Sun October 28, 2015

John Dobson Bringing telescopes to the masses September 13, 2015

Zenith Looking straight up September 6, 2015

Stellar Tourism Visiting an observatory by stagecoach August 15, 2015

More Charles Townes Shining a new light on the universe July 28, 2015

Moon and Jupiter Jupiter loses its status May 22, 2015

African Astronomy III Blue flashes from the distant universe March 26, 2015

African Astronomy II New uses for old radio dishes March 25, 2015

African Astronomy Changing views of southern skies March 24, 2015

Catching Neutrinos Tiny particles that change flavors January 27, 2015

Cold Dark Matter Getting cold to catch dark matter January 26, 2015

Soudan Laboratory Digging deep for dark matter January 25, 2015