Modern observatory telescopes are practically behemoths compared to Galileo´s 1 3/4-inch-diameter (4.4 cm) models. His primitive devices were refracting telescopes. A large convex lens on one end formed the image and a small concave lens at the other end, later modified to be also convex, magnified the image. Remarkably, his instrument could magnify objects up to 33 times, allowing him to view such distant wonders as Venus´ moon-shaped phases and Jupiter´s four moons.

Today´s reflecting telescopes use immense, bowl-shaped mirrors (up to 236 inches [600 cm] across!) to collect light from faraway heavenly bodies. They are thus able to detect objects ten million times fainter than those that can be seen with the naked eye. Why, it is claimed that one telescope in Australia could detect a candle flame a thousand miles (1,600 km) away! Whats curious is that astronomers today still face the same problem Galileo had in his day. He noticed that when magnified the stars increased in number but not in size. Galileo reckoned that the stars must be incredibly distant to remain mere points of light under magnification.

The Role of Telescopes

In 1931 the electron microscope was invented. By aiming a stream of electrons at an object, a visual image can be produced in which objects are magnified about a million times. It has one serious drawback: It cannot be used to study living specimens. A new device, however, which combines the optical microscope with television cameras and computer memory, now makes it possible for scientists actually to observe the biological activity of living cells! Telescopes and microscopes are thus potent tools. Mankind has been given an incredible insight into the world and universe in which he lives.

Yes, telescopes are making great impact in the process of humans gaining knowledge. This tends to considerably increase the need for astronomers to find the right kind of telescope that they need due to all the many offers on the market. Bushnell telescope is only one among the many choices of the different kinds of telescopes in the market today.

Through the Bushnell telescope reviews available in the Internet, it could be observed that making a good decision in finding the right kind of telescope for your specific needs. Bushnell telescope reviews aims to make the purchasers knowledgeable about the many features of the said product that are most often than not most needed by the individuals wanting to purchase the said product in the market today. Certainly, utilizing Bushnell telescope reviews in the Internet would best make the decision of the buyers certain and effective. Along with the Bushnell telescope reviews, Galileo telescope reviews for the buying market are also made available.