Here is the list of the top 5 earliest astronomical instruments. By the way, "Astronomy is a natural science that deals with the study of celestial objects (such as moons, planets, stars, nebulae, and galaxies); the physics, chemistry, and evolution of such objects; and phenomena that originate outside the atmosphere of Earth (such as supernovae explosions, gamma ray bursts, and cosmic background radiation). A related but distinct subject, cosmology, is concerned with studying the universe as a whole." WIKIPEDIA
Here are the top 5 list of early astronomical instruments.
TOP 5 LIST OF EARLY ASTRONOMICAL INSTRUMENTS
1. Sundial - a sundial tells time by means of the sun. To be more specific it can only be used when there is sunlight or in the morning. It can't be used in the evening. You can't use it during a thunder storm in the morning, you can't also use it when the sun is covered by thick clouds or during a cloudy day. The image below is an example of an early sundial.
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| The image of this sundial is courtesy of www.timecenter.com |
2. Sight-lines - these were very common in the ancient world. These were located at some sacred prominent spots, perhaps over the hilltop, through a cleft in the hills on the far horizon, along a row of stones, or from an inner sanctuary. It determines solstices and equinoxes. Solstice is easier to observe and it is accurately measured by sight-lines. The image below is a natural example of sight-lines.
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| This image is courtesy of kandmtravel.wordpress.com |
3. Stonehenge - a Stonehenge is used as a celestial calendar, burial place, sacrificial altar and a defensive building during the early times. The image below is an example of a Stonehenge.
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| This image is courtesy of science.nationalgeographic.com |
4. Quadrant - "A quadrant is an instrument that is used to measure angles up to 90°. It was originally proposed by Ptolemy as a better kind of astrolabe. Several different variations of the instrument were later produced by medieval Muslim astronomers." WIKIPEDIA
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| This image is courtesy of abyss.uoregon.edu |
5. Telescope - a telescope is used to see distant objects. High class telescopes are made to see stars, planets, moons and other celestial bodies. The most powerful and advanced telescope of our present time is the Hubble Space Telescope made by NASA. There are two kinds of telescope, the reflecting telescope and the refracting telescope. The image below is an example of an early telescope.
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| This image is courtesy of abyss.uoregon.edu |
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