The best place for astronomers to build their telescopes is a cold, dry, and calm place.
Astronomers identified a place in the Antarctic that they believe is the best place for an observatory. Read more about it at http://phys.org/news170932769.html.
The telescope wasn't invented until about 1604, so "early" astronomers had no telescopes.
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
Telescopes
They were discovered by astronomers using 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.
Telescopes
The big limitation was a lack of telescopes.