Download Full eBooks in PDF
Hubble Space Telescope Flaw Book in PDF, ePub and Kindle version is available to download in english. Read online anytime anywhere directly from your device. Click on the download button below to get a free pdf file of Hubble Space Telescope Flaw book. This book definitely worth reading, it is an incredibly well-written.
Author : United States. Congress. House. Committee on Science, Space, and Technology
Publisher : Unknown
Page : 172 pages
File Size : 47,6 Mb
Release : 1990
Category : Electronic
ISBN : PSU:000017597012
Author : National Aeronautics and Space Adm Nasa
Publisher : Unknown
Page : 118 pages
File Size : 51,7 Mb
Release : 2018-11-14
Category : Electronic
ISBN : 1731261705
The findings of the Hubble Space Telescope Optical Systems Board of Investigation are reported. The Board was formed to determine the cause of the flaw in the telescope, how it occurred, and why it was not detected before launch. The Board conducted its investigation to include interviews with personnel involved in the fabrication and test of the telescope, review of documentation, and analysis and test of the equipment used in the fabrication of the telescope's mirrors. The investigation proved that the primary mirror was made in the wrong shape (a 0.4-wave rms wavefront error at 632.8 nm). The primary mirror was manufactured by the Perkin-Elmer Corporation (Hughes Danbury Optical Systems, Inc.). The critical optics used as a template in shaping the mirror, the reflective null corrector (RNC), consisted of two small mirrors and a lens. This unit had been preserved by the manufacturer exactly as it was during the manufacture of the mirror. When the Board measured the RNC, the lens was incorrectly spaced from the mirrors. Calculations of the effect of such displacement on the primary mirror show that the measured amount, 1.3 mm, accounts in detail for the amount and character of the observed image blurring. No verification of the reflective null corrector's dimensions was carried out by Perkin-Elmer after the original assembly. There were, however, clear indications of the problem from auxiliary optical tests made at the time. A special optical unit called an inverse null corrector, designed to mimic the reflection from a perfect primary mirror, was built and used to align the apparatus; when so used, it clearly showed the error in the reflective null corrector. A second null corrector was used to measure the vertex radius of the finished primary mirror. It, too, clearly showed the error in the primary mirror. Both indicators of error were discounted at the time as being themselves flawed. The Perkin-Elmer plan for fabricating the primary mirror placed complete relia...
Author : United States. Congress. House. Committee on Science, Space, and Technology
Publisher : Unknown
Page : 176 pages
File Size : 49,5 Mb
Release : 1990
Category : Orbiting astronomical observatories
ISBN : STANFORD:36105045585036
Author : Eric Chaisson
Publisher : Harvard University Press
Page : 430 pages
File Size : 45,7 Mb
Release : 1998
Category : Nature
ISBN : 0674412559
The Hubble Space Telescope is the largest, most complex, and most powerful observatory ever deployed in space. Now Eric Chaisson, the senior scientist on the HST project, tells the inside story of the much heralded mission to fix the telescope. Copyright © Libri GmbH. All rights reserved.
Author : Robert Williams
Publisher : Unknown
Page : 0 pages
File Size : 46,8 Mb
Release : 2018
Category : Galaxies
ISBN : 0750317558
"Hubble Deep Field and the Distant Universe describes a watershed event in the history of astronomy, in addition to recounting the development of space astronomy. Aimed at a wide-ranging audience including amateur astronomers, science historians, researchers, Hubble Space Telescope (HST) aficionados and students interested in science, this book recounts the progression of events that led to the deep field exploration of Robert Williams and the Hubble Deep Field (HDF) team. Giving a fascinating insight into the processes by which astronomical research projects are carried out and unique discoveries are made by HST, this book describes the momentous image that has enabled astronomers to piece together the evolution of the largest structures in the universe."--Source : résumé de l'éditeur.
Author : David S. Leckrone
Publisher : Unknown
Page : 0 pages
File Size : 45,5 Mb
Release : 2020
Category : Space astronomy
ISBN : 0750320389
The Hubble Space Telescope is one of the most important scientific and engineering endeavors of our time. It has given humankind the first truly clear view of the heavens and has revolutionized almost every area of modern astronomy. The author this text, David Leckrone, worked as a project scientist on Hubble for 33 years. From 1992-2009 he was the Senior Project Scientist for Hubble at NASA's Goddard Space Flight Center. In that role he had an insider's view of the trials and triumphs of the Hubble mission, including its extraordinary scientific discoveries and the personal journeys of the astronomers who made them, the adventure of five successful shuttle-based servicing missions, and the quiet heroism of the many scientists, engineers and managers who rose to the occasion when Hubble was in trouble. This book is loosely a personal memoir but can more accurately be called a "Hubble family memoir" for which Leckrone serves as narrator
Author : Anonim
Publisher : Unknown
Page : 134 pages
File Size : 55,5 Mb
Release : 1990
Category : Hubble Space Telescope
ISBN : STANFORD:36105007582096
Author : National Research Council,Division on Engineering and Physical Sciences,Aeronautics and Space Engineering Board,Space Studies Board,Committee on the Assessment of Options for Extending the Life of the Hubble Space Telescope
Publisher : National Academies Press
Page : 161 pages
File Size : 52,7 Mb
Release : 2005-02-28
Category : Science
ISBN : 9780309165457
The Hubble Space Telescope (HST) has operated continuously since 1990. During that time, four space shuttle-based service missions were launched, three of which added major observational capabilities. A fifth â€" SM-4 â€" was intended to replace key telescope systems and install two new instruments. The loss of the space shuttle Columbia, however, resulted in a decision by NASA not to pursue the SM-4 mission leading to a likely end of Hubble's useful life in 2007-2008. This situation resulted in an unprecedented outcry from scientists and the public. As a result, NASA began to explore and develop a robotic servicing mission; and Congress directed NASA to request a study from the National Research Council (NRC) of the robotic and shuttle servicing options for extending the life of Hubble. This report presents an assessment of those two options. It provides an examination of the contributions made by Hubble and those likely as the result of a servicing mission, and a comparative analysis of the potential risk of the two options for servicing Hubble. The study concludes that the Shuttle option would be the most effective one for prolonging Hubble's productive life.
Author : Robert Zimmerman
Publisher : Princeton University Press
Page : 330 pages
File Size : 44,8 Mb
Release : 2010-03-14
Category : Science
ISBN : 9780691146355
The Hubble Space Telescope has transformed our understanding of the universe, revealing new information about its age and evolution, the life cycle of stars, and the existence of black holes, among other discoveries. This book tells the story of the Hubble Space Telescope and the people responsible for it.
Author : Kathryn D. Sullivan
Publisher : MIT Press
Page : 304 pages
File Size : 45,6 Mb
Release : 2019-11-05
Category : Science
ISBN : 9780262355940
The first American woman to walk in space recounts her experience as part of the team that launched, rescued, repaired, and maintained the Hubble Space Telescope The Hubble Space Telescope has revolutionized our understanding of the universe. It has, among many other achievements, revealed thousands of galaxies in what seemed to be empty patches of sky; transformed our knowledge of black holes; found dwarf planets with moons orbiting other stars; and measured precisely how fast the universe is expanding. In Handprints on Hubble, retired astronaut Kathryn Sullivan describes her work on the NASA team that made all this possible. Sullivan, the first American woman to walk in space, recounts how she and other astronauts, engineers, and scientists launched, rescued, repaired, and maintained Hubble, the most productive observatory ever built. Along the way, Sullivan chronicles her early life as a “Sputnik Baby,” her path to NASA through oceanography, and her initiation into the space program as one of “thirty-five new guys.” (She was also one of the first six women to join NASA’s storied astronaut corps.) She describes in vivid detail what liftoff feels like inside a spacecraft (it’s like “being in an earthquake and a fighter jet at the same time”), shows us the view from a spacewalk, and recounts the temporary grounding of the shuttle program after the Challenger disaster. Sullivan explains that “maintainability” was designed into Hubble, and she describes the work of inventing the tools and processes that made on-orbit maintenance possible. Because in-flight repair and upgrade was part of the plan, NASA was able to fix a serious defect in Hubble’s mirrors—leaving literal and metaphorical “handprints on Hubble.” Handprints on Hubble was published with the support of the MIT Press Fund for Diverse Voices.
Author : Anonim
Publisher : Unknown
Page : 1084 pages
File Size : 46,6 Mb
Release : 1988
Category : Astronautics
ISBN : NYPL:33433067573547
Author : Donald Metzler
Publisher : Springer Science & Business Media
Page : 174 pages
File Size : 40,8 Mb
Release : 2011-09-18
Category : Computers
ISBN : 9783642228988
Commercial Web search engines such as Google, Yahoo, and Bing are used every day by millions of people across the globe. With their ever-growing refinement and usage, it has become increasingly difficult for academic researchers to keep up with the collection sizes and other critical research issues related to Web search, which has created a divide between the information retrieval research being done within academia and industry. Such large collections pose a new set of challenges for information retrieval researchers. In this work, Metzler describes highly effective information retrieval models for both smaller, classical data sets, and larger Web collections. In a shift away from heuristic, hand-tuned ranking functions and complex probabilistic models, he presents feature-based retrieval models. The Markov random field model he details goes beyond the traditional yet ill-suited bag of words assumption in two ways. First, the model can easily exploit various types of dependencies that exist between query terms, eliminating the term independence assumption that often accompanies bag of words models. Second, arbitrary textual or non-textual features can be used within the model. As he shows, combining term dependencies and arbitrary features results in a very robust, powerful retrieval model. In addition, he describes several extensions, such as an automatic feature selection algorithm and a query expansion framework. The resulting model and extensions provide a flexible framework for highly effective retrieval across a wide range of tasks and data sets. A Feature-Centric View of Information Retrieval provides graduate students, as well as academic and industrial researchers in the fields of information retrieval and Web search with a modern perspective on information retrieval modeling and Web searches.
Author : United States. Congress. Senate. Committee on Commerce, Science, and Transportation. Subcommittee on Science, Technology, and Space
Publisher : Unknown
Page : 40 pages
File Size : 52,8 Mb
Release : 1990
Category : Astronautics and state
ISBN : PSU:000017597425
Author : Anonim
Publisher : Unknown
Page : 20 pages
File Size : 44,5 Mb
Release : 1992
Category : Government publications
ISBN : UIUC:30112086367171
Author : United States. Congress. House. Committee on Science, Space, and Technology. Subcommittee on Space
Publisher : Unknown
Page : 122 pages
File Size : 54,8 Mb
Release : 1994
Category : Science
ISBN : LOC:00032605898
