Extremely large telescope

Rarity: Common

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At a glance

Class

Notion

Domain

Science and technology

In collections

1 player has it in their collection.

What Wikipedia says

An extremely large telescope (ELT) is an astronomical observatory featuring an optical telescope with an aperture for its primary mirror from 20 metres up to 100 metres across, when discussing reflecting telescopes of optical wavelengths including ultraviolet (UV), visible, and near infrared wavelengths.

Excerpt from the Wikipedia article “Extremely large telescope”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: ESO Telescope Systems Division, CC BY 3.0, via Wikimedia Commons.