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Category Archives: telescope
The science of astronomy is about the telescopes. Without them, our naked eyes can only see thousands of stars in the night sky away from city lights. We get to see galaxies, stars, nebulas and other celestial objects that are light years away from us through telescopes. Furthermore, as the technology improved over the last … Continue reading The window of universe — Various types of Telescope → Continue reading → Continue reading
About 1/50th a hair’s width. That’s the size of the error which seriously set back the Hubble telescope. Perkin-Elmer diagnostics was tasked with grinding down the primary mirror, a 7.8 foot wide *almost* flat surface. The mirror’s curvature was determined by a reflective mirror array which bends a laser to precisely trace the surface’s desired … Continue reading 2200 Nanometers → Continue reading → Continue reading
The European Southern Observatory began construction of the European-Extremely Large Telescope (E-ELT) back in 2014. This telescope is on track to be the world’s largest optical and infrared telescope by the time it is completed in 2024, thus living up to its name. The E-ELT will include a main mirror that is 128 feet in … Continue reading “European-Extremely Large Telescope” Continue reading → Continue reading
The James Webb Space Telescope, or JWST, will be a large telescope that is intended to be the premier observatory of the next decade. The telescope will study every phase in the history of the universe, from right after the Big Bang to the formation of the universe that we know today, and even the … Continue reading James Webb Telescope Continue reading → Continue reading
The James Webb Space Telescope (JWST) is the long awaited successor to the Hubble Space Telescope from which we have received numerous wonderful and famous images of far away stars, galaxies, and other celestial bodies. As the successor to the Hubble, there are, of course, some improvements over the Hubble that are being made with […]Continue reading → Continue reading
For most contemporary scholars, the modern telescope owes its existence to Enlightenment thinkers who crafted the device to enhance their own stargazing endeavors. However, observing the night sky is hardly a practice that has been limited to the past few hundred years. Thus, it seems likely that there may have been telescopic structures created much … Continue reading Blog #2Continue reading → Continue reading
Telescopes focus light down to a point to increase the light gathering capacity of the astronomer’s eye. The optimal shape for such focus is a parabola, either a parabolic mirror, or a refracting lens of parabolic shape. Unfortunately, parabolic lenses do not have the same curvature everywhere the way spherical lenses do, making their construction … Continue reading The Era of Long Refractors →Continue reading → Continue reading
The Hubble Space Telescope has been delivering high-quality, in-depth images of the universe for almost three decades and has been critical in several astronomy discoveries, such as the rate of expansion of the universe. However, NASA is now planning to fully launch the James Webb Space Telescope in 2018 as the scientific successor to the […]Continue reading → Continue reading
Most people credit Italian astronomer Galileo Galilei (1564-1642) with building the first telescope. He did not, but he made great improvements and ingenious use of the instrument. Before the telescope were lenses. In the 13th century, Italian artisans created lenses for glasses to be worn by scholars with failing eyesight. The process of making glass was difficult, as unrefined … Continue reading Galileo’s TelescopeContinue reading → Continue reading
The Hubble telescope, which has been orbiting Earth for over 25 years, views the universe with a completely different perspective than what we can see on Earth. While the telescope is not necessarily responsible for amazing images like this one, it can be given credit for other just as powerful views of the universe. Its… Continue reading → Continue reading