Telescopes are essential tools for astronomers, allowing us to capture light from distant celestial objects and study the universe. From ground-based giants to orbital observatories, these instruments have revolutionized our understanding of space.

Space-Based Telescopes

Orbiting above Earth's atmosphere, these telescopes avoid atmospheric distortion, providing incredibly clear images and accessing wavelengths blocked by the air.

Hubble Space Telescope (HST)

The Hubble Space Telescope, launched in 1990, has provided some of the most stunning and scientifically valuable images of space, contributing to breakthroughs in cosmology, planetary science, and the study of star formation. It is a Cassegrain reflector design, primarily observing in the visible and near-ultraviolet light spectra.

James Webb Space Telescope (JWST)

As the successor to Hubble, the James Webb Space Telescope is designed to study the universe in the infrared spectrum. This allows it to penetrate dust clouds and observe some of the earliest stars and galaxies that formed after the Big Bang.

Ground-Based Telescopes

Despite atmospheric challenges, ground-based observatories offer advantages in size and accessibility. Many use adaptive optics to counteract atmospheric distortion.

Keck Observatory

Located near the summit of Maunakea, Hawaii, the Keck Observatory consists of two powerful telescopes, Keck I and Keck II. Each telescope features a primary mirror composed of 36 hexagonal segments working together as a single, massive mirror.

Arecibo Observatory (Formerly)

Although the main dish collapsed in 2020, the Arecibo Observatory was a world-renowned radio telescope. It played a significant role in radio astronomy, atmospheric science, and radar astronomy, including searching for near-Earth objects.