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domingo, 7 de febrero de 2016

NASA : NASA's James Webb Space Telescope Primary Mirror Fully Assembled .- Espejo principal del telescopio espacial James Webb de la NASA montado completamente

Hola amigos: A VUELO DE UN QUINDE EL BLOG., Dentro de una habitación limpia masiva en el Centro de Vuelo Espacial Goddard de la NASA en Greenbelt, Maryland el equipo del telescopio espacial James Webb utilizó un am robótico para instalar el último de los 18 espejos del telescopio en la estructura del telescopio.

More information.......

http://www.nasa.gov/press-release/nasas-james-webb-space-telescope-primary-mirror-fully-assembled

Inside a massive clean room at NASA's Goddard Space Flight Center in Greenbelt, Maryland the James Webb Space Telescope team used a robotic am to install the last of the telescope's 18 mirrors onto the telescope structure.

Credits: NASA/Chris Gunn

In this rare view, the James Webb Space Telescope's 18 mirrors are seen fully installed on the James Webb Space Telescope structure at NASA's Goddard Space Flight Center in Greenbelt, Maryland.

Credits: NASA/Chris Gunn

The 18th and final primary mirror segment is installed on what will be the biggest and most powerful space telescope ever launched. The final mirror installation Wednesday at NASA’s Goddard Space Flight Center in Greenbelt, Maryland marks an important milestone in the assembly of the agency’s James Webb Space Telescope.

“Scientists and engineers have been working tirelessly to install these incredible, nearly perfect mirrors that will focus light from previously hidden realms of planetary atmospheres, star forming regions and the very beginnings of the Universe,” said John Grunsfeld, associate administrator for NASA’s Science Mission Directorate in Washington. “With the mirrors finally complete, we are one step closer to the audacious observations that will unravel the mysteries of the Universe.”

Using a robotic arm reminiscent of a claw machine, the team meticulously installed all of Webb's primary mirror segments onto the telescope structure. Each of the hexagonal-shaped mirror segments measures just over 4.2 feet (1.3 meters) across -- about the size of a coffee table -- and weighs approximately 88 pounds (40 kilograms). Once in space and fully deployed, the 18 primary mirror segments will work together as one large 21.3-foot diameter (6.5-meter) mirror.

"Completing the assembly of the primary mirror is a very significant milestone and the culmination of over a decade of design, manufacturing, testing and now assembly of the primary mirror system," said Lee Feinberg, optical telescope element manager at Goddard. "There is a huge team across the country who contributed to this achievement."

While the primary mirror installation may be finished on the tennis court-sized infrared observatory, there still is much work to be done.

"Now that the mirror is complete, we look forward to installing the other optics and conducting tests on all the components to make sure the telescope can withstand a rocket launch," said Bill Ochs, James Webb Space Telescope project manager. "This is a great way to start 2016!"

The mirrors were built by Ball Aerospace & Technologies Corp., in Boulder, Colorado. Ball is the principal subcontractor to Northrop Grumman for the optical technology and optical system design. The installation of the mirrors onto the telescope structure is performed by Harris Corporation, a subcontractor to Northrop Grumman. Harris Corporation leads integration and testing for the telescope.

“The Harris team will be installing the aft optics assembly and the secondary mirror in order to finish the actual telescope,” said Gary Matthews, director of Universe Exploration at Harris Corporation. “The heart of the telescope, the Integrated Science Instrument Module, will then be integrated into the telescope. After acoustic, vibration, and other tests at Goddard, we will ship the system down to Johnson Space Center in Houston for an intensive cryogenic optical test to ensure everything is working properly.”

To watch the Webb telescope being built at Goddard, visit the "Webb-cam" page at:

http://www.jwst.nasa.gov/webcam.html

-end-

Felicia Chou
Headquarters, Washington
202-358-0257
felicia.chou@nasa.gov

Rob Gutro
Goddard Space Flight Center, Greenbelt Md.
301-286-4044
robert.j.gutro@nasa.gov

Last Updated: Feb. 4, 2016

Editor: Sarah Ramsey

Tags: James Webb Space Telescope,

NASA

Guillermo Gonzalo Sánchez Achutegui

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domingo, 10 de mayo de 2015

NASA : Engineers Clean Mirror with Carbon Dioxide Snow.- Ingenieros limpian espejo con nieve de dióxido de carbono....

Hola amigos: A VUELO DE UN QUINDE EL BLOG., hemos recibido información de la Agencia Espacial NASA, sobre una actividad que ingenieros especialistas limpian una capa de nieve de dióxido de Carbono del espejo del: the James Webb Space Telescope.

NASA, dice : "Los cristales como de nieve (nieve de dióxido de carbono) golpean con partículas y moléculas que contaminan al espejo", dijo Lee Feinberg, la NASA gestor de elementos telescopio óptico. Esta técnica sólo se utilizará si el espejo Espacial James Webb Telescope se contamina durante la integración y pruebas.

Two men in white lab suits shoot snow at a round, copper-colored mirror

Just like drivers sometimes use snow to clean their car mirrors in winter, two Exelis Inc. engineers are practicing "snow cleaning'" on a test telescope mirror for the James Webb Space Telescope at NASA's Goddard Space Flight Center in Greenbelt, Maryland. By shooting carbon dioxide snow at the surface, engineers are able to clean large telescope mirrors without scratching them.

"The snow-like crystals (carbon dioxide snow) knock contaminate particulates and molecules off the mirror," said Lee Feinberg, NASA optical telescope element manager. This technique will only be used if the James Webb Space Telescope's mirror is contaminated during integration and testing.

The Webb telescope is the scientific successor to NASA's Hubble Space Telescope. It will be the most powerful space telescope ever built. With a mirror seven times as large as Hubble's and infrared capability, Webb will be capturing light from 13.5 billion light years away. To do this, its mirror must be kept super clean.

"Small dust particles or molecules can impact the science that can be done with the Webb," said Feinberg. "So cleanliness especially on the mirrors is critical."

Webb is an international project led by NASA with its partners, the European Space Agency and the Canadian Space Agency.

Image credit: NASA/Chris Gunn
Text credit: Laura Betz, NASA's Goddard Space Flight Center, Greenbelt, Maryland

Last Updated: May 10, 2015

Editor: Ashley Morrow

NASA

Guillermo Gonzalo Sánchez Achutegui

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jueves, 1 de enero de 2015

NASA : Space Simulation Chamber Prepared for Testing Webb Telescope .- Cámara Espacial de Simulación Preparando para Pruebas del telescopio Webb

Hola amigos: A VUELO DE UN QUINDE EL BLOG., hemos recibido la información de la Agencia Espacial NASA, sobre las pruebas que están preparando en simulación del Telescopio Webb.

Esta foto fue captada desde fuera la enorme boca de la cámara gigante de vacío térmico de la NASA llamado Sala A, en el Centro Espacial Johnson en Houston. Anteriormente utilizado para misiones de vuelos espaciales tripulados, esta cámara histórica ahora está lleno de ingenieros y técnicos que preparan un sistema de elevación que se utiliza para mantener el Telescopio Espacial James Webb durante la prueba.

El Telescopio Espacial James Webb es el sucesor científico del Telescopio Espacial Hubble de la NASA. Será el más poderoso telescopio espacial jamás construida. Webb es un proyecto internacional liderado por la NASA con sus socios, la Agencia Espacial Europea y la Agencia Espacial Canadiense.

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Space Simulation Chamber Prepared for Testing Webb Telescope

This photo was captured from outside the enormous mouth of NASA's giant thermal vacuum chamber, called Chamber A, at Johnson Space Center in Houston. Previously used for manned spaceflight missions, this historic chamber is now filled with engineers and technicians preparing a lift system that will be used to hold the James Webb Space Telescope during testing.

The James Webb Space Telescope is the scientific successor to NASA's Hubble Space Telescope. It will be the most powerful space telescope ever built. Webb is an international project led by NASA with its partners, the European Space Agency and the Canadian Space Agency.

Image Credit: NASA/Chris Gunn

NASA
Guillermo Gonzalo Sánchez Achutegui
ayabaca@gmail.com
ayabaca@hotmail.com
ayabaca@yahoo.com
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sábado, 6 de septiembre de 2014

NASA : NASA Engineers Conduct Low Light Test on New Technology for Webb Telescope

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NASA Engineers Conduct Low Light Test on New Technology for Webb Telescope

NASA engineers inspect a new piece of technology developed for the James Webb Space Telescope, the micro shutter array, with a low light test at NASA's Goddard Space Flight Center in Greenbelt, Maryland. Developed at Goddard to allow Webb's Near Infrared Spectrograph to obtain spectra of more than 100 objects in the universe simultaneously, the micro shutter array uses thousands of tiny shutters to capture spectra from selected objects of interest in space and block out light from all other sources.

The James Webb Space Telescope is a large space telescope, optimized for infrared wavelengths. It is scheduled for launch later in this decade. Webb will find the first galaxies that formed in the early universe, connecting the Big Bang to our own Milky Way galaxy. Webb will peer through dusty clouds to see stars forming planetary systems, connecting the Milky Way to our own solar system.

Caption Credit: Laura Betz, NASA's Goddard Space Flight Center, Greenbelt, Maryland
Image Credit: NASA Goddard/Chris Gunn

NASA
Guillermo Gonzalo Sánchez Achutegui
ayabaca@gmail.com
ayabaca@hotmail.com
ayabaca@yahoo.com
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lunes, 3 de febrero de 2014

NASA : NASA Administrator Bolden, Senator Mikulski View Progress on James Webb Space Telescope

Reflecting on Webb's Progress

As the James Webb Space Telescope scientists and engineers continue to move forward with the observatory's pre-launch testing and assembly, the NASA community is excited to see the outstanding work accomplished so far.

NASA's Goddard Space Flight Center in Greenbelt, Md., held an employee event on Feb. 3, 2014, to share this progress. The main auditorium filled to capacity with NASA employees, as well as top officials from Northrop Grumman, Ball Aerospace & Technologies, the Space Telescope Science Institute, the Association of Universities for Research in Astronomy, the Canadian Space Agency and others to hear the strides the Webb team has made.

Youtube Override:

NASA Administrator Charles Bolden and Sen. Barbara Mikulski, of Maryland, visited NASA's Goddard Space Flight Center in Greenbelt, Md., on Feb. 3, 2014, to discuss the status of the James Webb Space Telescope, the agency's flagship science project.

Image Credit: NASA

Goddard Center Director Chris Scolese welcomed everyone and acknowledged that, "Without their leadership, we wouldn’t be here today," he said. "They have taken Webb from the beginning to the really great state it is in today."

The two other esteemed guests who joined Scolese on stage were NASA Administrator Charles Bolden and Sen. Barbara Mikulski of Maryland. Bolden shared his excitement and admiration for the scientists and engineers working hard to keep Webb on-budget and on-target for the much-anticipated launch date, scheduled for no earlier than 2018.

Sen. Barbara Mikulski, Goddard Center Director Chris Scolese, NASA Administrator Charles Bolden chat, via video, with Webb telescope's Paul Geithner

Sen. Mikulski, Goddard Center Director Chris Scolese and Administrator Bolden chat, via video from a Goddard clean room, with Paul Geithner, the James Webb Space Telescope's technical deputy project manager as Goddard employees and other officials look on.

Image Credit: NASA Goddard/Rebecca Roth

Feature Link:

More images on Flickr

Sen. Barbara Mikulski, of Maryland, addresses employees at NASA Goddard as NASA Administrator Charles Bolden and Goddard Center Director Chris Scolese look on

Sen. Mikulski addresses Goddard employees and other guests.

Image Credit: NASA Goddard/Chris Gunn

Feature Link:

More images on Flickr

"The recent completion of the critical design review for Webb, and the delivery of all its instruments to Goddard, mark significant progress for this mission," Bolden said.

Mikulski, a long-time NASA supporter, said she was proud and happy to see how far NASA has come with the telescope. In her role, Mikulski has helped secure funding for NASA so scientists and engineers can continue to push the envelope with their innovation and hard work. "My goal is to help you be you," she said. "May the force continue to be with you."

Guests also had the opportunity to see a live tour, through video feed, of the clean room that houses the hardware for Webb. They saw the 18 primary mirror segments that will soon be assembled on the Webb telescope. Paul Geithner, deputy project manager for Webb and tour guide explained the various parts of the telescope housed at Goddard.

Among the instruments was the University of Arizona's Near-Infrared Camera, which will be Webb's primary camera and collect images of some of the very first stars and galaxies that formed in our universe. Another instrument, European Space Agency’s Near-Infrared Spectrograph analyzes the composition of various astronomical objects. Next, Geithner showed the European Space Agency-provided Mid-Infrared Instrument. The instrument has both a camera and a spectrograph, which can see light in the mid-infrared, a portion of the electromagnetic spectrum that the human eye can’t see. The last instrument shown on the tour was the Canadian Space Agency's Fine Guidance Sensor and Near-infrared Imager and Slitless Spectrograph. This will allow Webb to point as precisely as possible at its targets to obtain the highest-quality images possible. It will also provide another method for investigating both the distant universe and closer, recently discovered exoplanets.

These components, once assembled and launched will contribute to the Webb telescope's discovery of amazing things. "This is the promise of JWST," Geithner said.

Talya Lerner
NASA's Goddard Space Flight Center, Greenbelt, Md.

NASA Administrator Charles Bolden and Senator Barbara Mikulski of Maryland congratulated the James Webb Space Telescope team Monday for the delivery of all flight instruments and primary mirrors to NASA's Goddard Space Flight Center in Greenbelt, Md.

Their comments came in a morning news conference at Goddard, where NASA's flagship science project will be assembled in preparation for launch in 2018.

”The Hubble Space Telescope has already rewritten the science books. Going from Hubble to the James Webb Space Telescope is like going from a biplane to the jet engine,” said Mikulski, Chairwoman of the Senate Appropriations Committee that funds NASA. "As Chairwoman, I’ve continued to fight for funds in the federal checkbook to keep the James Webb Space Telescope mission on track, supporting jobs today and jobs tomorrow at Goddard. NASA Goddard is home to leaders in Maryland’s space and innovation economies, making discoveries that not only win Nobel Prizes, but create new products and jobs. The James Webb Space Telescope will keep us in the lead for astronomy for decades to come, spurring the innovation and technology that keep America’s economy rolling."

NASA's James Webb Space Telescope will be the most powerful space telescope ever built, capable of observing the most distant objects in the universe, providing images of the first galaxies formed, and observing unexplored planets around distant stars. A joint project of NASA, the European Space Agency (ESA) and the Canadian Space Agency (CSA), Webb is the successor to the agency's Hubble Space Telescope.

All 18 of Webb's primary mirror segments are now housed in the Goddard clean room. Its 1.3 million cubic feet of dust-free space make the clean room one of the world's largest. All four of Webb's science instruments are within feet of the mirrors. The telescope’s mirror and instruments will capture images of the universe and break down the spectra of incoming light to analyze the properties of galaxies, stars, and the atmospheres of planets beyond our solar system.

"The recent completion of the critical design review for Webb, and the delivery of all its instruments to Goddard, mark significant progress for this mission," said Bolden. "The design, build, delivery and testing of these components took meticulous planning and action here at Goddard and with teams across the country, as well as with our international partners. It's very exciting to see it all coming together on schedule. And I want to thank our good friend Senator Barbara Mikulski for her support. We wouldn't be here today without her championing of this critical capability for NASA. I know she understands just how important it is to continue to push the boundaries of what we can do in space."

"This past year has been one of significant progress for the Webb telescope," said Goddard Director Chris Scolese during the news conference. "The NASA Goddard team is working tirelessly with our partners to keep the program on track as we develop this newest scientific tool to explore the universe."

The news conference featured a video presentation hosted by Webb's deputy project manager and technical engineer, Paul Geithner, from inside the clean room. He explained how the 18 mirror segments will be coupled to form the massive space telescope's 21-foot-wide main mirror. This work, and the assembly of the rest of the telescope, will begin once the telescope structure arrives at Goddard.

"Each of these instruments has a unique function to collect data about the universe," Geithner said, pointing to four science instruments that will be located inside the heart of the telescope.

One of these instruments, the University of Arizona's Near-Infrared Camera, will be Webb's primary camera and will take images of the first stars and galaxies to form in the universe, along with many other astronomical targets.

A second instrument, ESA's Near-Infrared Spectrograph (NIRSpec), will analyze the spectra and composition of as many as 100 objects at once. Airbus Defence and Space, formerly known as EADS/Astrium, built NIRSpec with components provided by Goddard.

A third instrument, ESA's Mid-Infrared Instrument, has both a camera and a spectrograph, which sees light in the mid-infrared region of the electromagnetic spectrum -- wavelengths longer than the human eye can see. This instrument was developed in collaboration with NASA's Jet Propulsion Laboratory in Pasadena, Calif.

A fourth instrument, CSA's Fine Guidance Sensor and Near-infrared Imager and Slitless Spectrograph, will allow Webb to point precisely at its target in order to obtain high-quality images, and also will provide other valuable science modes for investigating both the distant universe and nearby exoplanets.

Northrop Grumman Aerospace Systems is building Webb's sunshield. Once in space, the sunshield will act as an umbrella to keep heat radiating from the sun and Earth from reaching scientific instruments that must stay cold to function properly. The Webb telescope will be fully assembled by 2016 and then moved to a clean room at NASA's Johnson Space Center for additional testing.

For more information about the instruments and the Webb telescope, visit:

http://www.jwst.nasa.gov

and

http://www.nasa.gov/webb

NASA

Guillermo Gonzalo Sánchez Achutegui