Orbiter-Forum  

Go Back   Orbiter-Forum > Far Side of the Moon > Spaceflight News
Register Blogs Orbinauts List Social Groups FAQ Projects Mark Forums Read

Spaceflight News Share news, stories, or discussions about government and private spaceflight programs; including ESA, ISS, NASA, Russian Space Program, Virgin Galactic, & more!

Reply
 
Thread Tools
Old 08-22-2011, 07:05 PM   #31
Arrowstar
Probenaut
 
Arrowstar's Avatar
Default

Should be interesting to find out how they pull that off. Thanks for sharing.
Arrowstar is offline   Reply With Quote
Old 09-03-2011, 01:10 PM   #32
Keatah
Orbinaut
Default

http://www.laserfocusworld.com/artic...his-world.html

Some interesting imaging tech here. And it is neat that some of the circuitry developed for JWST was installed in the HST. And the making of the SIDECAR chip, this chip replaced a cubic meter of electronics boards!

JWST is so slow in the construction phase that parts of the 'scope are being redesigned as it gets assmbled..
Keatah is offline   Reply With Quote
Thanked by:
Old 09-12-2011, 05:03 AM   #33
Turbinator
Orbinaut
Default

Here is an excelent read on the current state, and progress of JWST:
http://scienceblogs.com/startswithab...t_chose_to.php
Turbinator is offline   Reply With Quote
Thanked by:
Old 09-13-2011, 02:22 PM   #34
orb
O-F Administrator
Ninja
 
orb's Avatar

Default

NASA: RELEASE : 11-298 - NASA'S Webb Telescope Completes Mirror Coating Milestone:
Quote:
GREENBELT, Md. -- NASA's James Webb Space Telescope has reached a major milestone in its development. The mirrors that will fly aboard the telescope have completed the coating process at Quantum Coating Inc. in Moorestown, N.J.

The telescope's mirrors have been coated with a microscopically thin layer of gold, selected for its ability to properly reflect infrared light from the mirrors into the observatory's science instruments. The coating allows the Webb telescope's "infrared eyes" to observe extremely faint objects in infrared light. Webb's mission is to observe the most distant objects in the universe.

"Finishing all mirror coatings on schedule is another major success story for the Webb telescope mirrors," said Lee Feinberg, NASA Optical Telescope Element manager for the Webb telescope at the agency's Goddard Space Flight Center in Greenbelt, Md. "These coatings easily meet their specifications, ensuring even more scientific discovery potential for the Webb telescope."

{...}


NASA: NASA's Webb Telescope Completes Mirror-Coating Milestone

Click on image to enlarge
The first six flight ready James Webb Space Telescope's primary mirror segments are prepped to begin final cryogenic testing at NASA's Marshall Space Flight Center in Huntsville, Ala.
Credit: NASA/Chris Gunn
orb is offline   Reply With Quote
Thanked by:
Old 09-15-2011, 04:59 AM   #35
Unstung
Crew 2019
 
Unstung's Avatar
Default

Universe Today: "Senate Saves the James Webb Space Telescope!"
Quote:
In addition to continued funding for the telescope the 2012 bill also allots the National Aeronautics and Space Administration $17.9 billion (a reduction of $509 million or 2.8 percent from the 2011 enacted level) and preserves NASA’s portfolio balanced among science, aeronautics, technology and human space flight investments, including the Orion Multipurpose Crew Vehicle, the heavy lift Space Launch System, and commercial crew development.
Unstung is offline   Reply With Quote
Old 09-15-2011, 05:54 AM   #36
Turbinator
Orbinaut
Default

Yes!
Turbinator is offline   Reply With Quote
Old 09-16-2011, 11:00 AM   #37
Keatah
Orbinaut
Default

http://www.thespacereview.com/article/1926/1
Keatah is offline   Reply With Quote
Thanked by:
Old 09-16-2011, 11:51 AM   #38
N_Molson
Addon Developer
 
N_Molson's Avatar

Default

Good. Given what Hubble did, that thing, once correctly set, is going to feed astronomers & physicians with enormous amounts of data !
N_Molson is offline   Reply With Quote
Old 09-16-2011, 04:19 PM   #39
orb
O-F Administrator
Ninja
 
orb's Avatar

Default

SPACE.com: Senate Panel Restores James Webb Space Telescope Funding
orb is offline   Reply With Quote
Thanked by:
Old 09-16-2011, 07:49 PM   #40
Unstung
Crew 2019
 
Unstung's Avatar
Default

Quote:
Originally Posted by N_Molson View Post
 physicians
Unstung is offline   Reply With Quote
Old 09-17-2011, 01:08 AM   #41
orb
O-F Administrator
Ninja
 
orb's Avatar

Default

SPACE.com: NASA Completes Giant Mirrors for Hubble Successor Telescope
orb is offline   Reply With Quote
Thanked by:
Old 09-19-2011, 04:50 PM   #42
orb
O-F Administrator
Ninja
 
orb's Avatar

Default

NASA:
Tests Under way on the Sunshield for NASA's Webb Telescope

September 19, 2011

NASA is testing an element of the sunshield that will protect the James Webb Space Telescope's mirrors and instruments during its mission to observe the most distant objects in the universe.

The sunshield will consist of five tennis court-sized layers to allow the Webb telescope to cool to its cryogenic operating temperature of minus 387.7 degrees Fahrenheit (40 Kelvin).

Click on image to enlarge
The five-layer James Webb Space Telescope sunshield consists of thin membranes made from a polymer-based film and supporting equipment such as spreader bars, booms, cabling, and containment shells. Designed to block solar light and keep the Observatory operating at cryogenic temperatures.
Credit: NASA/Northrop Grumman


Testing began early this month at ManTech International Corp.'s Nexolve facility in Huntsville, Ala., using flight-like material for the sunshield, a full-scale test frame and hardware attachments. The test sunshield layer is made of Kapton, a very thin, high-performance plastic with a reflective metallic coating, similar to a Mylar balloon. Each sunshield layer is less than half the thickness of a sheet of paper. It is stitched together like a quilt from more than 52 individual pieces because manufacturers do not make Kapton sheets as big as a tennis court.

The tests are expected to be completed in two weeks.

"The conclusion of testing on this full size layer will be the final step of the sunshield's development program and provides the confidence and experience to manufacture the five flight layers," said Keith Parrish, Webb Sunshield manager at NASA's Goddard Space Flight Center in Greenbelt, Md.

During testing, engineers use a high-precision laser radar to measure the layer every few inches at room temperature and pressure, creating a 3D map of the material surface, which is curved in multiple directions. The map will be compared to computer models to see if the material behaved as predicted, and whether critical clearances with adjacent hardware are achieved.

The test will be done on all five layers to give engineers a precise idea of how the entire sunshield will behave once in orbit. Last year, a one-third-scale model of the sunshield was tested in a chamber that simulated the extreme temperatures it will experience in space. The test confirmed the sunshield will allow the telescope to cool to its operating temperature.

After the full-size sunshield layers complete testing and model analysis, they will be sent to Northrop Grumman in Redondo Beach Calif., where engineers verify the process of how the layers will unfurl in space. There the sunshield layers will be folded, much like a parachute, so they can be safely stowed for launch.

{...}




NASA Press Release: RELEASE : 11-311 - Tests Under Way On The Sunshield For NASA'S Webb Telescope

SPACE.com: NASA Spending Bill Boosts Hubble Telescope Successor, Funds Commercial Crew
orb is offline   Reply With Quote
Thanked by:
Old 09-20-2011, 02:46 PM   #43
orb
O-F Administrator
Ninja
 
orb's Avatar

Default

Aviation Week: Senate Panel Caps Webb At $8 Billion
orb is offline   Reply With Quote
Thanked by:
Old 10-12-2011, 05:22 PM   #45
orb
O-F Administrator
Ninja
 
orb's Avatar

Default

NASA: Giant-Sized Webb Space Telescope Model to 'Land' in Baltimore
orb is offline   Reply With Quote
Thanked by:
Reply

  Orbiter-Forum > Far Side of the Moon > Spaceflight News


Thread Tools

Posting Rules
BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
Forum Jump


All times are GMT. The time now is 11:09 PM.

Quick Links Need Help?


About Us | Rules & Guidelines | TOS Policy | Privacy Policy

Orbiter-Forum is hosted at Orbithangar.com
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.
Copyright ©2007 - 2017, Orbiter-Forum.com. All rights reserved.