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Hubble Telescope

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Introduction

From the earliest days of astronomy, astronomers have shared a common dream from generation to generation. They wanted to have a clear sight of the space. With the launch of the Hubble, human beings had significant advance of achieving their dream. Hubble is a machine that rotates the orbit and is placed in the atmosphere to block light from reaching the planet. It has an advantage of capturing images more than the ground based telescopes (Anderson & King 2006)

Problems and launching

The Hubble Space Telescope was carried in to the orbit in 1990. It was named after a renowned astronomer Edwin Hubble. It has been suggested that the Hubble is a significant tool of research in the space. This vital element of public relation was built by the United States space agency with the support of European space agency.

According to David Alice Charles and Dawn (2012) the telescope was expected to be launched in 1983, but scientist discovered that the machine had been ground the wrong way. A servicing mission team made observations that led to a breakthrough of restoring the intended quality of the machine. The mission team designed the telescope with features that could enable astronauts conduct technical service in space in 2009. According to Mike Griffin approval, the telescope is expected to function beyond 2013. After the launch of the telescope, astronomers discovered that there was a serous problem with the optical system. The quality of images captured was below standard, which showed that Hubble had failed to achieve its intended purpose. Hubble had flawed images that suggested that the crucial mirror had been ground in the wrong shape. However, astronomers went ahead, and used the telescope to make productive observations. The lens were wrongly spaced, an indication that it was incorrectly assembled and the null corrector could not make proper shapes.

Astronomers began to seek ways of solving the problem because servicing the Hubble in space was expensive. Therefore, the servicing mission team designed fresh optical equipments to correct the spherical irregularity. Hubble has beamed thousands of descriptions back to earth flaking light on many mysteries. It has helped astronauts to have a transformed look of the universe (Ballesteros, Zamora, and Heitsch 2011). This was a successful and long lasting achievement made by NASA. The blurry images indicated that something was wrong. With the Hubble in space, people expected clear images more than those of ground based telescopes. The spherical aberration revealed that the center of the focus mirror was in a wrong shape (Meylan 1993). The blurred image was a challenge to scientists who had to come up with ways of solving the aberration. Scientists and engineers were aware of the optical problem and invented a chain of mirrors to cut off the light reflections. They replaced the planetary camera with a fresh adaptation.

Conclusion

Astronauts are proud of how Hubble has been able to expose the secrets of the earth and the solar system. However, they should realize that the telescope’s life span will come to an end. This will be identified with the degradation of components. NASA had planned bringing back the machine from the space after it stops working, but the prolonged lifespan has postponed its retirement. The presence of the telescope in the national museums will reflect the determination of scientists. This shows an achievement of a long time dream. Nevertheless, scientists have identified a robotic mission to enable Hubble land in the ocean when it stops functioning.

References

M. J. 2005, in ASP Conf. Ser. 340, Future Directions in High Resolution Astronomy, ed. J. Romney & M. Reid San Francisco, CA: ASP Publishers.

David R. Law, Alice E. Shapley, Charles C. Steidel, Naveen A. Reddy, Charlotte R. Christensen, Dawn K. (2012) In a rare grand-design spiral High velocity dispersion galaxy at redshift z = 2.18. Nature, 487 (7407): 338

Anderson, J., & King, I. R. (2006). PSFs, Photometry and Astrometry for the ACS/WFC ISR-ACS 2006-01; Baltimore, MD: STScI

Ballesteros-Paredes, J., Hartmann, L. W., V´azquez-Semadeni, E., Heitsch, F., & Zamora-Avil´es, M. A. (2011) MNRAS, 277, 362

Meylan, G. (1993) in ASP Conf. Ser. 48, The Globular Cluster-Galaxy Connection, ed. G. H. Smit & J. P. Brodie San Francisco, CA: ASP Publishers.