The James Webb Space Telescope

Message boards : Science (non-SETI) : The James Webb Space Telescope
Message board moderation

To post messages, you must log in.

1 · 2 · 3 · 4 . . . 13 · Next

AuthorMessage
Profile Julie
Volunteer moderator
Volunteer tester
Avatar

Send message
Joined: 28 Oct 09
Posts: 34041
Credit: 18,883,157
RAC: 18
Belgium
Message 1450571 - Posted: 6 Dec 2013, 9:49:46 UTC
Last modified: 6 Dec 2013, 9:57:49 UTC

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. Webb's instruments will be designed to work primarily in the infrared range of the electromagnetic spectrum, with some capability in the visible range.

Webb will have a large mirror, 6.5 meters (21.3 feet) in diameter and a sunshield the size of a tennis court. Both the mirror and sunshade won't fit onto a rocket fully open, so both will fold up and open once Webb is in outer space. Webb will reside in an orbit about 1.5 million km (1 million miles) from the Earth.

The James Webb Space Telescope was named after the NASA Administrator who crafted the Apollo program, and who was a staunch supporter of space science.



Set for launch in 2018


http://jwst.nasa.gov/
rOZZ
Music
Pictures
ID: 1450571 · Report as offensive     Reply Quote
Thomas
Volunteer tester

Send message
Joined: 9 Dec 11
Posts: 1499
Credit: 1,345,576
RAC: 0
France
Message 1450624 - Posted: 6 Dec 2013, 14:11:59 UTC - in response to Message 1450571.  

Thanks for the heads-up Julie ! :)
A new quest will certainly be full of discoveries and surprises...
Long live to JWST (from 2018, of course !).
ID: 1450624 · Report as offensive     Reply Quote
Profile Mr. Kevvy Crowdfunding Project Donor*Special Project $250 donor
Volunteer moderator
Volunteer tester
Avatar

Send message
Joined: 15 May 99
Posts: 3776
Credit: 1,114,826,392
RAC: 3,319
Canada
Message 1450674 - Posted: 6 Dec 2013, 16:27:57 UTC

Nice! Hadn't heard of this before (well, maybe, but I didn't know what it was.)
This looks like it will do for infrared what Hubble did for visible. Thanks Julie. :^)
ID: 1450674 · Report as offensive     Reply Quote
Profile Lynn Special Project $75 donor
Volunteer tester
Avatar

Send message
Joined: 20 Nov 00
Posts: 14162
Credit: 79,603,650
RAC: 123
United States
Message 1450767 - Posted: 6 Dec 2013, 19:40:10 UTC - in response to Message 1450674.  

Thanks for the link Julie.
I will miss Hubble :(
ID: 1450767 · Report as offensive     Reply Quote
Profile Mr. Kevvy Crowdfunding Project Donor*Special Project $250 donor
Volunteer moderator
Volunteer tester
Avatar

Send message
Joined: 15 May 99
Posts: 3776
Credit: 1,114,826,392
RAC: 3,319
Canada
Message 1450774 - Posted: 6 Dec 2013, 20:06:16 UTC - in response to Message 1450767.  

I will miss Hubble :(


What?!? No Hubble?!?

<<checks Hubble pages>>

Possibly you meant Kepler? (But it may be workable still...)
ID: 1450774 · Report as offensive     Reply Quote
Profile Lynn Special Project $75 donor
Volunteer tester
Avatar

Send message
Joined: 20 Nov 00
Posts: 14162
Credit: 79,603,650
RAC: 123
United States
Message 1450808 - Posted: 6 Dec 2013, 21:31:45 UTC - in response to Message 1450774.  

I will miss Hubble :(


What?!? No Hubble?!?

<<checks Hubble pages>>

Possibly you meant Kepler? (But it may be workable still...)


When will the hubble be decommissioned?


Hubble is the only telescope designed to be serviced in space by astronauts. Between 1993 and 2002, four Space Shuttle missions repaired, upgraded, and replaced systems on the telescope; a fifth mission was canceled on safety grounds following the Columbia disaster. However, after spirited public discussion, NASA administrator Mike Griffin approved one final servicing mission, completed in 2009. The telescope is now expected to function until at least 2014, and possibly 2020.[10] Its scientific successor, the James Webb Space Telescope (JWST), is currently scheduled to be launched in 2018.
ID: 1450808 · Report as offensive     Reply Quote
Profile Mr. Kevvy Crowdfunding Project Donor*Special Project $250 donor
Volunteer moderator
Volunteer tester
Avatar

Send message
Joined: 15 May 99
Posts: 3776
Credit: 1,114,826,392
RAC: 3,319
Canada
Message 1450840 - Posted: 6 Dec 2013, 23:02:51 UTC

Thought it was going to be run until it failed, but considering how amazing it's been even being that old, and how far technology has advanced since it was launched, this one should be a worthy successor.
ID: 1450840 · Report as offensive     Reply Quote
Profile Julie
Volunteer moderator
Volunteer tester
Avatar

Send message
Joined: 28 Oct 09
Posts: 34041
Credit: 18,883,157
RAC: 18
Belgium
Message 1452791 - Posted: 11 Dec 2013, 15:36:49 UTC

ID: 1452791 · Report as offensive     Reply Quote
Profile Julie
Volunteer moderator
Volunteer tester
Avatar

Send message
Joined: 28 Oct 09
Posts: 34041
Credit: 18,883,157
RAC: 18
Belgium
Message 1485309 - Posted: 6 Mar 2014, 13:11:01 UTC

Hertz: James Webb Telescope Still on Schedule for Launch Despite GAO Concerns


“JWST remains on plan, on budget, on schedule. It’s making great technical progress toward launch in late 2018,” Paul Hertz, director of NASA’s Astrophysics Division, told scientists attending the American Astronomical Society’s winter meeting Jan. 5-9 at the National Harbor, Md.

rOZZ
Music
Pictures
ID: 1485309 · Report as offensive     Reply Quote
Profile tullio
Volunteer tester

Send message
Joined: 9 Apr 04
Posts: 8797
Credit: 2,930,782
RAC: 1
Italy
Message 1485764 - Posted: 7 Mar 2014, 16:11:06 UTC - in response to Message 1485527.  
Last modified: 7 Mar 2014, 16:12:19 UTC

They are optical telescopes looking to different parts of the EM spectrum, mostly visible and UV for Hubble, longer wavelength IR for Webb. Kepler is looking at a chosen constellation searching for planets passing in front of stars and diminishing their luminosity.
Tullio
ID: 1485764 · Report as offensive     Reply Quote
Profile Julie
Volunteer moderator
Volunteer tester
Avatar

Send message
Joined: 28 Oct 09
Posts: 34041
Credit: 18,883,157
RAC: 18
Belgium
Message 1488290 - Posted: 13 Mar 2014, 11:59:32 UTC

JWST is the successor to the Hubble Space Telescope. I guess Hubble will retire once they've launched the JWST, or maybe before the launch...
rOZZ
Music
Pictures
ID: 1488290 · Report as offensive     Reply Quote
Profile Wiggo
Avatar

Send message
Joined: 24 Jan 00
Posts: 34744
Credit: 261,360,520
RAC: 489
Australia
Message 1488296 - Posted: 13 Mar 2014, 12:21:03 UTC - in response to Message 1488290.  

JWST is the successor to the Hubble Space Telescope. I guess Hubble will retire once they've launched the JWST, or maybe before the launch...

Technically Hubble was suppose to have been retired in 2010 so it's been running on overtime (still it's doing pretty well in its advanced age).

From HubbleSite, http://hubblesite.org/the_telescope/hubble_essentials/quick_facts.php

Launch: April 24, 1990 from space shuttle Discovery (STS-31)
Deployment: April 25, 1990
Mission Duration: Up to 20 years

Cheers.
ID: 1488296 · Report as offensive     Reply Quote
Profile tullio
Volunteer tester

Send message
Joined: 9 Apr 04
Posts: 8797
Credit: 2,930,782
RAC: 1
Italy
Message 1488419 - Posted: 13 Mar 2014, 17:07:14 UTC

Hubble was saved by a Shuttle mission after being put in orbit with flawed optics It was upgraded by two more Shuttle missions. If the JWST incurs in some problem no mission can reach it. Kepler has overtaken its deadline but it is still working with different objectives.
Tullio
ID: 1488419 · Report as offensive     Reply Quote
Profile Julie
Volunteer moderator
Volunteer tester
Avatar

Send message
Joined: 28 Oct 09
Posts: 34041
Credit: 18,883,157
RAC: 18
Belgium
Message 1488517 - Posted: 13 Mar 2014, 19:09:39 UTC

If the JWST incurs in some problem no mission can reach it.


How's that? Waw, they're taking quite a chance then, an expensive one!
rOZZ
Music
Pictures
ID: 1488517 · Report as offensive     Reply Quote
Profile Bob DeWoody
Avatar

Send message
Joined: 9 May 10
Posts: 3387
Credit: 4,182,900
RAC: 10
United States
Message 1488547 - Posted: 13 Mar 2014, 19:44:33 UTC

That's why they have to do everything within their power to make sure it is capable of completing it's mission before it is launched. It is ironic that Hubble sat around in storage for several years before it got it's ride into space. Plenty of time to check things like optics before it ever left the ground. I think now that they have learned their lesson and assume nothing.
Bob DeWoody

My motto: Never do today what you can put off until tomorrow as it may not be required. This no longer applies in light of current events.
ID: 1488547 · Report as offensive     Reply Quote
Profile Julie
Volunteer moderator
Volunteer tester
Avatar

Send message
Joined: 28 Oct 09
Posts: 34041
Credit: 18,883,157
RAC: 18
Belgium
Message 1488557 - Posted: 13 Mar 2014, 19:54:51 UTC - in response to Message 1488547.  

That's why they have to do everything within their power to make sure it is capable of completing it's mission before it is launched. It is ironic that Hubble sat around in storage for several years before it got it's ride into space. Plenty of time to check things like optics before it ever left the ground. I think now that they have learned their lesson and assume nothing.



That's 'gekkenwerk' we call it in Dutch, work for crazy men...
rOZZ
Music
Pictures
ID: 1488557 · Report as offensive     Reply Quote
Profile tullio
Volunteer tester

Send message
Joined: 9 Apr 04
Posts: 8797
Credit: 2,930,782
RAC: 1
Italy
Message 1489304 - Posted: 15 Mar 2014, 12:18:32 UTC - in response to Message 1488557.  

The JWST has to deploy its mirrors in space,since it they are launched folded. That is a big risk.
Tullio
ID: 1489304 · Report as offensive     Reply Quote
Profile Gordon Lowe
Avatar

Send message
Joined: 5 Nov 00
Posts: 12094
Credit: 6,317,865
RAC: 0
United States
Message 1494049 - Posted: 23 Mar 2014, 16:57:05 UTC

It always amazes me how fragile cargo like this makes it safe and sound into space after a tumultuous rocket launch.
The mind is a weird and mysterious place
ID: 1494049 · Report as offensive     Reply Quote
Profile Bob DeWoody
Avatar

Send message
Joined: 9 May 10
Posts: 3387
Credit: 4,182,900
RAC: 10
United States
Message 1494226 - Posted: 23 Mar 2014, 22:43:59 UTC

I'm pretty sure that the Hubble telescope rode into space in the cargo bay of the shuttle. While still a bumpy ride a shuttle launch when everything went right was not as rough as the ride that most satellites endure.
Bob DeWoody

My motto: Never do today what you can put off until tomorrow as it may not be required. This no longer applies in light of current events.
ID: 1494226 · Report as offensive     Reply Quote
Profile Julie
Volunteer moderator
Volunteer tester
Avatar

Send message
Joined: 28 Oct 09
Posts: 34041
Credit: 18,883,157
RAC: 18
Belgium
Message 1495148 - Posted: 25 Mar 2014, 15:49:18 UTC

This month, the flight Near-Infrared Camera was installed into the flight Integrated Science Instrument Module (ISIM) for the James Webb Space Telescope. NIRCam joins the flight Fine Guidance Sensor/ Near Infrared Imager and Slitless Spectrograph (FGS/NIRISS) and Mid-Infrared Instrument (MIRI) which are already integrated into the ISIM. The flight Near-Infrared Spectrograph (NIRSpec) will be installed next.

The NIRCam is JWST's primary imager and will be returning beautiful images of the universe.
rOZZ
Music
Pictures
ID: 1495148 · Report as offensive     Reply Quote
1 · 2 · 3 · 4 . . . 13 · Next

Message boards : Science (non-SETI) : The James Webb Space Telescope


 
©2024 University of California
 
SETI@home and Astropulse are funded by grants from the National Science Foundation, NASA, and donations from SETI@home volunteers. AstroPulse is funded in part by the NSF through grant AST-0307956.