Visible-light astronomy

Visible-light astronomy has existed as long as people have been looking up at the night sky, although it has since improved in its observational capabilities since the invention of the telescope, which is commonly credited to Hans Lippershey, a German-Dutch spectacle-maker,[1] although Galileo played a large role in the development and creation of telescopes.

Hans Lippershey, a German-Dutch spectacle maker, is commonly credited as being the first to invent the optical telescope.

Galileo's telescopes were also a profitable sideline, selling them to merchants who found them useful both at sea and as items of trade.

He published his initial telescopic astronomical observations in March 1610 in a brief treatise titled Sidereus Nuncius (Starry Messenger).

In the modern day, visible-light astronomy is still practiced by many amateur astronomers, especially since telescopes are much more widely available for the public, as compared to when they were first being invented.

Government agencies, such as NASA, are very involved in the modern day research and observation of visible objects and celestial bodies.

[4] Reflecting telescopes suffer from several types of optical inaccuracies, such as off-axis aberrations near the edges of the field of view.

The most commonly observed objects tend to be ones that do not require a telescope to view, such as the Moon, meteors, planets, constellations, and stars.

The Moon also does not require any kind of telescope or binoculars to see effectively, making it extremely convenient and common for people to observe.