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XO Telescope
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3.1k Popularity

XO Telescope, Dual-lens telescope at Haleakalā, Hawaii.

The XO Telescope is an observation instrument at the summit of Haleakalā volcano in Hawaii that uses two camera lenses working together. The equipment operates at about 3,000 meters elevation and relies on straightforward commercial components modified for astronomical research.

The project started in the mid-2000s and detected its first planet in 2006, a large celestial body orbiting a sun-like star. This early discovery marked an important moment for the search for worlds beyond our solar system.

Teams of astronomers from around the world use this instrument to search for planets orbiting distant stars. The collaborative effort brings together both professional researchers and amateur observers who share a passion for discovering worlds beyond our solar system.

The location on a high volcanic summit means visitors should expect thinner air and cooler temperatures. It is important to allow time for acclimatization and bring appropriate clothing before visiting the observation facility.

The system detects planets by observing tiny brightness changes that occur when planets pass in front of their stars. This subtle detection method has proven surprisingly effective at finding worlds that would otherwise remain invisible.

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Location
GPS coordinates
20.70814,-156.25678
Latest update
September 14, 2026 10:54
Around this place

United States of America

United States Space Surveillance Network

290 ft
Pan-STARRS
United States of America

Pan-STARRS

430 ft
Haleakalā Observatory
United States of America

Haleakalā Observatory

120 ft
Air Force Maui Optical and Supercomputing observatory
United States of America

Air Force Maui Optical and Supercomputing observatory

440 ft
Daniel K. Inouye Solar Telescope
United States of America

Daniel K. Inouye Solar Telescope

5.2 mi
Kamaole III Beach
United States of America

Kamaole III Beach

12.3 mi
3.67 m Advanced Electro Optical System Telescope
United States of America

3.67 m Advanced Electro Optical System Telescope

80 ft
Faulkes Telescope North
United States of America

Faulkes Telescope North

490 ft
Haleakalā Wilderness
United States of America

Haleakalā Wilderness

5.7 mi
Kula Botanical Garden
United States of America

Kula Botanical Garden

7.4 mi
Enchanted Floral Gardens of Kula, Maui
United States of America

Enchanted Floral Gardens of Kula, Maui

7.4 mi
Ke'anae Arboretum
United States of America

Ke'anae Arboretum

12.3 mi
Keawakapu Beach
United States of America

Keawakapu Beach

12.3 mi
Crater Historic District
United States of America

Crater Historic District

4.7 mi
Loaloa Heiau
United States of America

Loaloa Heiau

9.9 mi
Kamaole II Beach
United States of America

Kamaole II Beach

12.3 mi
Haleakalā Visitor Center
United States of America

Haleakalā Visitor Center

0.7 mi
Ulua Beach
United States of America

Ulua Beach

12.2 mi
Park Headquarters Visitor Center
United States of America

Park Headquarters Visitor Center

3.6 mi
Wailea Beach
United States of America

Wailea Beach

12.2 mi
Waipu
United States of America

Waipu

9.3 mi
Polo Beach
United States of America

Polo Beach

12.3 mi
Changs Beach
United States of America

Changs Beach

12.4 mi
Mather Plaque in Haleakalā National Park
United States of America

Mather Plaque in Haleakalā National Park

3.6 mi
Poʻolenalena Beach
United States of America

Poʻolenalena Beach

12.3 mi
Leleiwi Overlook
United States of America

Leleiwi Overlook

3.1 mi
Mōkapu Beach
United States of America

Mōkapu Beach

12.2 mi
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« XO Telescope - Dual-lens telescope at Haleakalā, Hawaii » is provided by Around Us (aroundus.com). Images and texts are derived from Wikimedia project under a Creative Commons license. You are allowed to copy, distribute, and modify copies of this page, under the conditions set by the license, as long as this note is clearly visible.

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