Telescopes designed to be used as optical astronomical interferometers, as it can reach very high resolutions and at a narrower range of observations.

Today let’s check out this amazing list of Top 3 Largest Optical Reflecting Telescopes in the World.


1) Gran Telescopic Canarias (GTC)

Nationality/ Sponsors : Spain (90%), Mexico, USA
Built : 2002-2008

Image result for Gran Telescopio Canarias (GTC)

It is also known as the Great Canary Telescope. Located on the island of La Palma , in the Canaries, Spain. It is 10.4 m (410 in) reflecting telescope. Its altitude is around 2,267 m (7,438 ft).

2) Hobby Eberly Telescope (HET)

Nationality/ Sponsors : USA, Germany
Built : 1997

Image result for Hobby Eberly Telescope (HET)

Located at the McDonald Observatory. The primary mirror is constructed from 91 hexagonal segments, which is less expensive than manufacturing a single large primary, resulting in low construction cost. Its altitude is 2,026 m (6,647 ft), and 10-meter (30-foot) aperture telescope.

3) Keck 1

Nationality/ Sponsors : USA
Built : 1993

Image result for Keck 1

W. M. Keck Observatory is a two-telescope astronomical observatory, it feature 10 m (33 ft) primary mirrors. These are largely used and productive astronomical observatory on the earth.

Also Read: Top 3 Largest Aircraft Carrier In The World


Do You KNOW ?

Today, there are some online telescopes that allow you to view the night sky in various places from the comfort of your own home.


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