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Observatories and Instruments

Large Binocular Telescope

Ground-Based Optical Observatories

An optical and near-infrared telescope on Mount Graham in the Pinaleno Mountains of southeastern Arizona, built by an international collaboration including institutions in the United States, Italy and Germany. Dedicated in October 2004, it saw first light with a single mirror in October 2005 and became fully binocular by January 2008; its two 8.4-meter mirrors combined give it the light-gathering power of an 11.8-meter telescope and, when used interferometrically, the resolving power of a 22.8-meter telescope.

Facts
Observatory Type
Ground-based optical observatory 1
Location
Mount Graham, Pinaleno Mountains, Arizona, United States 1
Operational
from 2005 1
Measures
Optical and near-infrared light, with resolving power equivalent to a single 22.8-meter telescope when its two mirrors are combined interferometrically. 1
Operating Principle
Two 8.4-meter mirrors mounted side by side on a single common structure, hence the name binocular, with adaptive optics correcting atmospheric distortion. 1
Classification
Observing Band
Optical / Visible 1
FAQs

Why does the Large Binocular Telescope use two mirrors on one mount?

Two 8.4-meter mirrors on one mount collect light like an 11.8-meter mirror and resolve like a 23-meter one.

The telescope carries two 8.4-meter primary mirrors side by side on a single mount. Used together they give an effective collecting area equal to a single 11.8-meter mirror, and when their light is combined interferometrically they reach the resolving power of roughly a 23-meter telescope.
Connections

Operated By

Source LBTO: Governance of the Large Binocular Telescope Observatory
In the Other Atlases

Located In

Also in Geography Atlas: where this subject is located.

Sources
1. Wikipedia (space and spaceflight articles)
Wikimedia Foundation
  • Wikipedia: Large Binocular Telescope, history section
    The telescope was dedicated in October 2004 and saw first light with a single primary mirror on October 12, 2005
  • Wikipedia: Large Binocular Telescope, design section
    The telescope design has two 8.4 m (330 inch) mirrors mounted on a common base, hence the name binocular.
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Large Binocular Telescope (Wikipedia)
  • Wikipedia: Large Binocular Telescope, lead section
    The Large Binocular Telescope (LBT) is an optical telescope for astronomy located on 10,700-foot (3,300 m) Mount Graham, in the Pinaleno Mountains of southeastern Arizona, United States.
  • Wikipedia: Large Binocular Telescope, specifications section
    When using both 8.4 m (330 inch) wide mirrors, with centres 14.4 m apart, the LBT has the same light-gathering ability as an 11.8 m (464 inch) wide single circular telescope and the resolution of a 22.8 m (897 inch) wide one.
  • Large Binocular Telescope, Wikipedia - lead section, observing band (optical)
    The Large Binocular Telescope (LBT) is an optical telescope for astronomy located on 10,700-foot (3,300 m) Mount Graham, in the Pinaleno Mountains of southeastern Arizona, United States.
  • In Group: Optical Observatories of the Americas, Lead sentence
    The Large Binocular Telescope (LBT) is an optical telescope for astronomy located on 10,700-foot (3,300 m) Mount Graham, in the Pinaleno Mountains of southeastern Arizona, United States.
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LBTO: Governance of the Large Binocular Telescope Observatory
Operated By: Large Binocular Telescope Corporation, Governance, LBTC
Quote, Operated By: Large Binocular Telescope Corporation, Governance, LBTC
The Large Binocular Telescope Corporation (LBTC) is the legal entity governing the Observatory.
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