Hubble Space Telescope is a space telescope that was in orbit of the earth. Hubble’s name was taken from a famous American scientist Edwin Hubble who is also the inventor of the Hubble law. Most of the celestial bodies that have been identified, is a service the Hubble telescope.
In 1962, the U.S. National Academy of Sciences recommends for building a giant space telescope. Three years later, in 1977, Congress began to raise funds for the project. In the same year, making the Hubble Space Telescope begins soon.
Hubble telescope construction, was completed in 1985. Hubble launched into space ‘for the first time on April 25, 1990. In fact, Hubble is planned to begin operation in 1986. However, while the operation was postponed because of Aircraft Space Challenger disaster. Several years after the operation, Hubble sends images are blurry and unclear. In the end, NASA found that the lens on the telescope is shifted as much as 1/50 the thickness of a human hair! In December 1993, the space shuttle Endeavor sent to modify the Hubble by adding a new camera to fix the error on the primary lens.
Telescopes: The thickness reaches 13.1 meters (43.5 feet) in diameter, 4.27 meters (14.0 feet) and weighs 11 000 pounds. Hubble size is almost the same as a school bus. The orange tube on Hubble telescope is a source of energy.
Lens: Lens Hubble telescope primary diameter, 2.4 m (8 ft) tall, and weighed about 826 pounds. These lenses are made of silica glass that is coated by a thin layer of pure aluminum to reflect light. In addition to aluminum coating, the lenses also have a layer of magnesium fluoride useful for preventing oxidation and ultraviolet light (UV) rays from the sun so that the lens is not quickly broken.
How it works
First of all, Hubble captured images. Once received by the telescope, the image will be converted into digital code and radiated to the earth by using an antenna that has the ability to transmit 1 million bits of data per second. Once the digital code is received by the earth station, the code would be changed to photograph and spectrograph (an instrument used to record astronomical spectra).
The telescope was able to walk 5 miles per second. Hubble can get around more than 150 million miles per year (± 241 million kilometers).
Hubble has been done
Hubble is a lot of help scientists learn, observe and understand about the universe, outer space objects (black holes / black holes, galaxies, stars), etc.. Hubble space telescope that was discovered Xena, the planet-10 along with Gabrielle, his satellite. In addition, Hubble sends too many amazing pictures of events in space like a supernova, star birth and star collisions. Picture a giant galaxy is not collected in one day. The galaxy Messier 101 (M-101) is one of them. Image of this galaxy is the largest and the most detailed image of a spiral galaxy ever produced by Hubble. Galaxy image is composed of 51 sections.
In the second mission in February 1997, the Hubble astronauts replace some equipment and also adds a new jacket to keep the Hubble to keep warm. Advance Camera installed in 2001. The camera can sharpen the image and widen the viewing angle of the camera. After that, the Wide Field Camera 3 and Cosmic Origins Spectrograph installed in 2003. Two of the last Hubble mission was in 2001 and 2003. Hubble should be disabled at the end of 2005. However, in October 1997, NASA decided to extend Hubble operations from 2005 to 2010. Hubble will be replaced by the James Webb telescope.