Updates Herschel & Planck News - Page 2 - Orbiter-Forum

**Orbinaut Pete** · 05-14-2009, 11:36 AM

Quote:

Originally Posted by Urwumpe

Herschel was BTW british citizen.

Aah, I see you're right. I didn't know that. My apologies- ESA do occasionally recognise our existence then

agentgonzo · 05-14-2009, 01:18 PM

Good launch and faring sep. Herschel looks good and on its way

**Orbinaut Pete** · 05-14-2009, 01:54 PM

http://news.bbc.co.uk/1/hi/sci/tech/8050327.stm

**Notebook** · 05-14-2009, 04:26 PM

Nice launch, wonder why the camera crew have trouble tracking the rocket! Too much vino?; or they don't know which direction its going...

For Orbinaut Pete.
If you aren't aware(and you may well be!), UK had a founding in ESA through ELDO:-

http://www.spaceuk.org/bstreak/eldo/eldo.html

Looks like they are still findings bits:-

http://www.exploroz.com/Forum/Topic/...on_Desert.aspx

Anyway, good for Arianne, and looking forward to the trek to L2.

N.

---------- Post added at 17:26 ---------- Previous post was at 17:17 ----------

Looks good:-

http://www.esa.int/SPECIALS/herschel...BDZVNUF_0.html

Moonwalker · 05-14-2009, 07:07 PM

It is great to see that Europe also is taking significant steps to explore the space.

I wish we would also do manned space flight finally. But I'm confident that this might happen as well sooner or later.

**SiberianTiger** · 05-15-2009, 08:46 AM

Can anyone post a link to a high-res replay of the launch which would show the Ariane's flight beyond the point the BBC coverage ends, please?

**Notebook** · 05-15-2009, 09:00 AM

Not what you want I'm afraid, but a bit longer (2.5mins), covers the boosters seperation.

http://www.videocorner.tv/videocorne....php?langue=en

If that was the only video feed available thats probably as good as you'll get, unless some local crew had other cameras there. Unlikely they would let any civilians get close though.

Don't know why they cut back to the control room every time it goes into cloud, very annoying.

N.

**Urwumpe** · 05-15-2009, 09:14 AM

Well, but I personally felt, the Arianespace stream was of a better quality than NASA TV, despite the really annoying directing. For the short time they broadcast, they also make a fair deal of effort.

**SiberianTiger** · 05-15-2009, 09:15 AM

Quote:

Originally Posted by Notebook

Don't know why they cut back to the control room every time it goes into cloud, very annoying.

N.

No rocket visible means nothing to look at, I suppose. Or maybe we didn't notice something funny in the control room they tried to show us.

Thanks for the link, Notebook.

**Notebook** · 05-15-2009, 09:31 AM

Their pictures are good, but they hop all over the place with their direction. At least they got rid of the wobbly web-cam they had nailed to a palm-tree right next to the rocket.

Working on my theory that there is nothing more interesting to a cameraman(tv anyway) than another cameraman, I was suspicous about the control room shot. Yes there's a cameraman, in shot, at the back! Wonder if they get in-shot allowance?

N.

**SiberianTiger** · 05-15-2009, 12:47 PM

I'm wondering, what kind of elements are necessary to describe position of an object in Lissajous orbit around a Lagrange point?

**Notebook** · 05-16-2009, 09:37 AM

Nice pics:-

http://www.esa.int/esaCP/SEM4SJZVNUF_index_0.html

N.

BrianJ · 05-16-2009, 10:44 AM

Quote:

Originally Posted by SiberianTiger

I'm wondering, what kind of elements are necessary to describe position of an object in Lissajous orbit around a Lagrange point?

Cartesian state vectors, I guess. Since the lissajous orbit around L2 is essentially a highly perturbed Heliocentric orbit, you can't really use Keplerian orbit elements.

Quote:

Originally Posted by Notebook

Nice pics:-
http://www.esa.int/esaCP/SEM4SJZVNUF_index_0.html
N.

Wow! That's stunning.

Cheers,
Brian

**tblaxland** · 05-16-2009, 10:59 AM

Quote:

Originally Posted by SiberianTiger

I'm wondering, what kind of elements are necessary to describe position of an object in Lissajous orbit around a Lagrange point?

I imagine a set of coefficients to the applicable parametric equations, as well as a value of the free parameter for some epoch would provide a first order approximation: http://en.wikipedia.org/wiki/Lissajous_curve. Beyond that, I expect that a set of state vectors and numerical propagation would be what is actually used for the navigation.

**Notebook** · 05-19-2009, 05:37 PM

Quote:

The satellite was transmitting with about 35 W RF power in X-Band via the Low Gain Antenna from a distance of about 280 000 km from Earth.

http://www.esa.int/SPECIALS/Operations/SEM2EU9BWUF_0.html

N.

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05-14-2009, 11:36 AM	#16
Orbinaut Pete ISSU Project Manager	Quote: Originally Posted by Urwumpe Herschel was BTW british citizen. Aah, I see you're right. I didn't know that. My apologies- ESA do occasionally recognise our existence then

05-14-2009, 01:18 PM	#17
agentgonzo Grounded since '09	Good launch and faring sep. Herschel looks good and on its way

05-14-2009, 01:54 PM	#18
Orbinaut Pete ISSU Project Manager	http://news.bbc.co.uk/1/hi/sci/tech/8050327.stm

05-14-2009, 04:26 PM	#19
Notebook Orbinaut	Nice launch, wonder why the camera crew have trouble tracking the rocket! Too much vino?; or they don't know which direction its going... For Orbinaut Pete. If you aren't aware(and you may well be!), UK had a founding in ESA through ELDO:- http://www.spaceuk.org/bstreak/eldo/eldo.html Looks like they are still findings bits:- http://www.exploroz.com/Forum/Topic/...on_Desert.aspx Anyway, good for Arianne, and looking forward to the trek to L2. N. ---------- Post added at 17:26 ---------- Previous post was at 17:17 ---------- Looks good:- http://www.esa.int/SPECIALS/herschel...BDZVNUF_0.html

05-14-2009, 07:07 PM	#20
Moonwalker Orbinaut	It is great to see that Europe also is taking significant steps to explore the space. I wish we would also do manned space flight finally. But I'm confident that this might happen as well sooner or later.

05-15-2009, 08:46 AM	#21
SiberianTiger News Sifter	Can anyone post a link to a high-res replay of the launch which would show the Ariane's flight beyond the point the BBC coverage ends, please?

05-15-2009, 09:00 AM	#22
Notebook Orbinaut	Not what you want I'm afraid, but a bit longer (2.5mins), covers the boosters seperation. http://www.videocorner.tv/videocorne....php?langue=en If that was the only video feed available thats probably as good as you'll get, unless some local crew had other cameras there. Unlikely they would let any civilians get close though. Don't know why they cut back to the control room every time it goes into cloud, very annoying. N.

05-15-2009, 09:14 AM	#23
Urwumpe Donator	Well, but I personally felt, the Arianespace stream was of a better quality than NASA TV, despite the really annoying directing. For the short time they broadcast, they also make a fair deal of effort.

05-15-2009, 09:15 AM	#24
SiberianTiger News Sifter	Quote: Originally Posted by Notebook Don't know why they cut back to the control room every time it goes into cloud, very annoying. N. No rocket visible means nothing to look at, I suppose. Or maybe we didn't notice something funny in the control room they tried to show us. Thanks for the link, Notebook.

05-15-2009, 09:31 AM	#25
Notebook Orbinaut	Their pictures are good, but they hop all over the place with their direction. At least they got rid of the wobbly web-cam they had nailed to a palm-tree right next to the rocket. Working on my theory that there is nothing more interesting to a cameraman(tv anyway) than another cameraman, I was suspicous about the control room shot. Yes there's a cameraman, in shot, at the back! Wonder if they get in-shot allowance? N.

05-15-2009, 12:47 PM	#26
SiberianTiger News Sifter	I'm wondering, what kind of elements are necessary to describe position of an object in Lissajous orbit around a Lagrange point?

05-16-2009, 09:37 AM	#27
Notebook Orbinaut	Nice pics:- http://www.esa.int/esaCP/SEM4SJZVNUF_index_0.html N.

05-16-2009, 10:44 AM	#28
BrianJ thing	Quote: Originally Posted by SiberianTiger I'm wondering, what kind of elements are necessary to describe position of an object in Lissajous orbit around a Lagrange point? Cartesian state vectors, I guess. Since the lissajous orbit around L2 is essentially a highly perturbed Heliocentric orbit, you can't really use Keplerian orbit elements. Quote: Originally Posted by Notebook Nice pics:- http://www.esa.int/esaCP/SEM4SJZVNUF_index_0.html N. Wow! That's stunning. Cheers, Brian

05-16-2009, 10:59 AM	#29
tblaxland Webmaster	Quote: Originally Posted by SiberianTiger I'm wondering, what kind of elements are necessary to describe position of an object in Lissajous orbit around a Lagrange point? I imagine a set of coefficients to the applicable parametric equations, as well as a value of the free parameter for some epoch would provide a first order approximation: http://en.wikipedia.org/wiki/Lissajous_curve. Beyond that, I expect that a set of state vectors and numerical propagation would be what is actually used for the navigation.

05-19-2009, 05:37 PM	#30
Notebook Orbinaut	Quote: The satellite was transmitting with about 35 W RF power in X-Band via the Low Gain Antenna from a distance of about 280 000 km from Earth. http://www.esa.int/SPECIALS/Operations/SEM2EU9BWUF_0.html N.