IPB

Welcome Guest ( Log In | Register )

3 Pages V   1 2 3 >  
Reply to this topicStart new topic
Gaia making a 3D-map of a Billion stars, new space observatory
GravityWaves
post Apr 1 2006, 07:38 PM
Post #1


Member
***

Group: Members
Posts: 124
Joined: 23-March 06
Member No.: 723



Have you guys heard about this one ?

Gaia observatory
link
link

QUOTE
"The satellite will determine the position, colour and true motion of one thousand million stars and over 100,000 objects in our Solar System. Gaia will also identify as many as 10,000 planets around other stars. "
QUOTE
"Gaia will measure distance (from parallax) out to ~100,000 parsecs; for stars ~10,000 pc away, with a Vmag of ~<15, Gaia will measure their distances accurate to ~10-20%."

You can also read about it here
http://www.spaceflightnow.com/news/n0407/06mapping/
http://en.wikipedia.org/wiki/Gaia_probe

or check the European space site
Go to the top of the page
 
+Quote Post
GravityWaves
post Apr 12 2006, 07:32 AM
Post #2


Member
***

Group: Members
Posts: 124
Joined: 23-March 06
Member No.: 723



Galactic census project
http://sci.esa.int/science-e/www/object/in...fobjectid=28820
http://www.esa.int/esaSC/SEMZ4E1A6BD_index_0.html
Go to the top of the page
 
+Quote Post
Guest_PhilCo126_*
post Jun 6 2007, 08:21 PM
Post #3





Guests






What's the difference here with what HIPPARCOS did in the 1990s ?
Go to the top of the page
 
+Quote Post
edstrick
post Jun 8 2007, 06:52 AM
Post #4


Senior Member
****

Group: Members
Posts: 1870
Joined: 20-February 05
Member No.: 174



Far, far more targets, more color information for classification, much higher precision, radial velocity spectra of probably more targets than Hipparcos got in it's entire catalog.
Go to the top of the page
 
+Quote Post
Mongo
post Jun 9 2007, 03:08 AM
Post #5


Member
***

Group: Members
Posts: 723
Joined: 13-June 04
Member No.: 82



Indeed. By the end of its mission, GAIA will have mapped the 3D positions of the stars occupying a substantial portion of the entire galaxy. The benefits are many -- one that jumps to mind is that the distances to numerous Cepheids will be known to much higher accuracy than is currently the case, resulting in a much more well-established extragalactic distance scale.

Bill
Go to the top of the page
 
+Quote Post
GravityWaves
post Jun 14 2008, 04:06 PM
Post #6


Member
***

Group: Members
Posts: 124
Joined: 23-March 06
Member No.: 723



Testing the Gaia tracking concept
http://gaia.esa.int/science-e/www/object/i...fobjectid=42754
QUOTE
What has all this to do with NASA's WMAP? Well, the ground-based optical tracking concept must of course be tested. Like WMAP, Gaia will be located at the second Earth-Sun Lagrange point L2, about 1.5 million kilometres from Earth. Like Gaia, WMAP has a deployable sunshield, partly covered with insulation material and partly with solar panels. The Gaia shield is about 11 metres in diameter and inclined by 45° to the Sun direction, that of WMAP is about 4.5 metres and inclined by 22.5°. With all these parameters, WMAP is a reasonable (photo-)model for the brightness and observability of Gaia. If the sunshield materials were strictly the same, and the proportion of insulation and solar panel areas similar, WMAP could be expected to be roughly 1.5-2 magnitudes fainter than Gaia. The actual brightness difference is still uncertain to some degree, however.
Go to the top of the page
 
+Quote Post
GravityWaves
post Feb 2 2009, 06:26 PM
Post #7


Member
***

Group: Members
Posts: 124
Joined: 23-March 06
Member No.: 723



Cornell Uni Library
http://eprintweb.org/S/article/astro-ph/0812.2354
arXiv

The promise of Gaia and how it will influence stellar ages

Carla Cacciari

Abstract. The Gaia space project, planned for launch in 2011, is one of the ESA cornerstone missions, and will provide astrometric, photometric and spectroscopic data of very high quality for about one billion stars brighter than V=20. This will allow to reach an unprecedented level of information and knowledge on several of the most fundamental astrophysical issues, such as mapping of the Milky Way, stellar physics (classification and parameterization), Galactic kinematics and dynamics, study of the resolved stellar populations in the Local Group, distance scale and age of the Universe, dark matter distribution (potential tracers), reference frame (quasars, astrometry), planet detection, fundamental physics, Solar physics, Solar system science. I will present a description of the instrument and its main characteristics, and discuss a few specific science cases where Gaia data promise to contribute fundamental improvement within the scope of this Symposium.
Go to the top of the page
 
+Quote Post
GravityWaves
post Feb 18 2009, 03:31 PM
Post #8


Member
***

Group: Members
Posts: 124
Joined: 23-March 06
Member No.: 723



pancam.gif
Gaia video processing unit test model delivered
cool.gif
Go to the top of the page
 
+Quote Post
GravityWaves
post Dec 17 2009, 07:45 PM
Post #9


Member
***

Group: Members
Posts: 124
Joined: 23-March 06
Member No.: 723



Gaia to lift off from Europe’s Spaceport on a Soyuz launcher

16 December 2009
Gaia, ESA’s next-generation star mapper, will be carried into space by a Soyuz-STB/Fregat launch vehicle from Europe’s Spaceport in French Guiana. David Southwood, ESA’s Director of Science and Robotic Exploration, signed the contract for the launch with Jean-Yves LeGall, Chairman and CEO of Arianespace, at ESA Headquarters in Paris yesterday.
Go to the top of the page
 
+Quote Post
Guest_PhilCo126_*
post Dec 18 2009, 12:12 PM
Post #10





Guests






That's the first step...
On ESA's Gaia space operations page the launch date is still set for December 2011 although other websites mention spring 2012.
http://www.esa.int/SPECIALS/Operations/SEMK5HZTIVE_0.html
Go to the top of the page
 
+Quote Post
GravityWaves
post Jul 6 2010, 04:20 PM
Post #11


Member
***

Group: Members
Posts: 124
Joined: 23-March 06
Member No.: 723



Scientific Community Makes GREAT Progress Towards Gaia

http://www.spacedaily.com/reports/Scientif...s_Gaia_999.html
Go to the top of the page
 
+Quote Post
Holder of the Tw...
post Jan 2 2013, 04:29 PM
Post #12


Member
***

Group: Members
Posts: 540
Joined: 17-November 05
From: Oklahoma
Member No.: 557



According to Spaceflight Now, Gaia is now scheduled for launch on September 29th with a Soyuz rocket at the French Guiana launch site.

Go to the top of the page
 
+Quote Post
Holder of the Tw...
post Jun 21 2013, 06:02 PM
Post #13


Member
***

Group: Members
Posts: 540
Joined: 17-November 05
From: Oklahoma
Member No.: 557



Now this is unusual. Back on May 24th Spaceflight Now revised their launch schedule and moved Soyuz/Gaia forward ten days. According to them, launch of Gaia will now occur on September 19th.

Worldwide launch schedule

Edit 6/24: BUMMER! The launch schedule got updated again just three days after this posting, and Gaia was pushed waaaayyy back. Late in the year, no definite date.

Update 6/28: Spacecraft is complete, tested, and ready to ship out.

Testing Completed

Ready to depart

Update 8/8:
According to the latest GAIA -DPAC newsletter, they are going to ship most of the spacecraft out in early September, with the sunshield sent to South America a few days later. They are aiming to launch during the time period Nov 17th to Dec 5th.

Update 8/24

Most of the spacecraft has now arrived in French Guiana, and Spaceflight Now has a pretty good article about that, launch preparations and the mission as a whole.

Article

And now Gaia has its own blog site:

Semi official Gaia blog site
Go to the top of the page
 
+Quote Post
antoniseb
post Nov 12 2013, 03:36 PM
Post #14


Member
***

Group: Members
Posts: 235
Joined: 2-August 05
Member No.: 451



I saw on the ESA Gaia web page that they are replacing some part based on a problem on an already launched mission, and the new target launch date is Dec 20, 2013. Anyone know what the other craft was, and what the part is?
Go to the top of the page
 
+Quote Post
Tom Womack
post Nov 12 2013, 03:43 PM
Post #15


Junior Member
**

Group: Members
Posts: 22
Joined: 3-January 07
Member No.: 1551



QUOTE (antoniseb @ Nov 12 2013, 03:36 PM) *
I saw on the ESA Gaia web page that they are replacing some part based on a problem on an already launched mission, and the new target launch date is Dec 20, 2013. Anyone know what the other craft was, and what the part is?


The part is a clock generator for an X-band transponder; equivalent parts apparently went wrong in some O3b Networks communications satellites launched in June.
Go to the top of the page
 
+Quote Post

3 Pages V   1 2 3 >
Reply to this topicStart new topic

 



RSS Lo-Fi Version Time is now: 19th March 2024 - 07:08 AM
RULES AND GUIDELINES
Please read the Forum Rules and Guidelines before posting.

IMAGE COPYRIGHT
Images posted on UnmannedSpaceflight.com may be copyrighted. Do not reproduce without permission. Read here for further information on space images and copyright.

OPINIONS AND MODERATION
Opinions expressed on UnmannedSpaceflight.com are those of the individual posters and do not necessarily reflect the opinions of UnmannedSpaceflight.com or The Planetary Society. The all-volunteer UnmannedSpaceflight.com moderation team is wholly independent of The Planetary Society. The Planetary Society has no influence over decisions made by the UnmannedSpaceflight.com moderators.
SUPPORT THE FORUM
Unmannedspaceflight.com is funded by the Planetary Society. Please consider supporting our work and many other projects by donating to the Society or becoming a member.