Their eyes, ground-based telescopes, space telescopes.
Telescopes
Telescopes are used by astronomers to collect light from celestial objects such as stars, planets, and galaxies. They enable astronomers to study these objects in detail, revealing information about their properties, composition, and motion. Telescopes can also help astronomers in detecting and studying phenomena like supernovae, black holes, and exoplanets.
Telescopes are commonly used by astronomers to observe objects in space such as planets, stars, and galaxies. Microscopes are not typically used by astronomers as they are designed for studying very small objects on Earth, such as cells and microbes.
Astronomers typically look through telescopes at the stars to study celestial objects such as planets, stars, galaxies, and other phenomena in the universe. They use telescopes to gather data and make observations that help expand our knowledge of the cosmos.
There were no telescopes prior to 1608, so no "ancient" astronomers ever used one.
The telescope wasn't invented until about 1604, so "early" astronomers had no telescopes.
There were many famous ancient astronomers, and astronomers from hundreds of years ago (not exactly ancient. but vital to our present understanding of astronomy). They include:HipparchusPtolemyCopernicusGalileoEudoxusThere were also many Egyptian, Mayan, and Chaldean astronomers whose names have been lost over time.
TELESCOPES
Their eyes, ground-based telescopes, space telescopes.
Astronomers have used telescopes and charge coupled devices.
Yes, both of them. And they also use reflecting telescopes.
telescopes
They were discovered by astronomers using telescopes.
Telescopes
Telescopes are instruments used by astronomers. The first person to do this was Galileo.
Telescopes are used by astronomers to collect light from celestial objects such as stars, planets, and galaxies. They enable astronomers to study these objects in detail, revealing information about their properties, composition, and motion. Telescopes can also help astronomers in detecting and studying phenomena like supernovae, black holes, and exoplanets.