James Webb Space Telescope
- Thread starter geordief
- Start date
RainbowSingularity
Valued Senior Member
this one
mars lander does not have the scope of this telescope
the telescope will work for decades & bring in massive data
the mars lander, while technical & brilliant
is a specialist smaller scope device with a different purpose.
apples with bananas
mars lander does not have the scope of this telescope
the telescope will work for decades & bring in massive data
the mars lander, while technical & brilliant
is a specialist smaller scope device with a different purpose.
apples with bananas
Yazata
Valued Senior Member
More exciting? That crazy rocket sky crane landing that delivered automobile-sized and nuclear powered Perseverance (and its little friend the Ingenuity helicopter) to Mars. I about fell out of my chair when that actually worked.
More important? Both about equal in their own ways, I guess. I expect that JWST will deliver all kinds of cool astronomical discoveries.
RainbowSingularity
Valued Senior Member
More exciting? That crazy rocket sky crane landing that delivered automobile-sized and nuclear powered Perseverance (and its little friend the Ingenuity helicopter) to Mars. I about fell out of my chair when that actually worked.
More important? Both about equal in their own ways, I guess. I expect that JWST will deliver all kinds of cool astronomical discoveries.
both james web or the mars rover could detect the next gen super mineral which may be used to build space ships or semiconductors etc.
The Webb telescope will be important. It's an amazing feat of engineering to construct it and put it in place. But there are still lots of things that could go wrong. Still, with its $10 billion price tag, I think we can assume that the people putting it together and launching it have been very careful and have worked very hard to try to anticipate potential problems.
Since Webb will be orbiting the L2 Lagrange point of the Earth, it will be inaccessible for any servicing from Earth, so if it has any hardware problem (like the one that Hubble had, say), there will be nothing anybody on Earth can do about it.
Since Webb will be orbiting the L2 Lagrange point of the Earth, it will be inaccessible for any servicing from Earth, so if it has any hardware problem (like the one that Hubble had, say), there will be nothing anybody on Earth can do about it.
Only for one decade, I think. After that, the fuel to point it, and adjust its orbit if necessary, will run out.
Not quiteAre we there yet?
Seems was not quite on correct course
https://scitechdaily.com/nasas-webb-space-telescope-makes-time-critical-mid-course-correction-burn/
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At 7:50 pm EST, on December 25, 2021, the James Webb Space Telescope initiated its first course correction burn to adjust its trajectory toward its final orbit. Credit: NASA Goddard Space Flight Center
Hopefully soon - few months
But it gets to its destination quite soon,doesn't it? 4 days? 14 days?Not quite
Seems was not quite on correct course
https://scitechdaily.com/nasas-webb-space-telescope-makes-time-critical-mid-course-correction-burn/
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At 7:50 pm EST, on December 25, 2021, the James Webb Space Telescope initiated its first course correction burn to adjust its trajectory toward its final orbit. Credit: NASA Goddard Space Flight Center
Hopefully soon - few months
Can take a short rest then and have a bit of a stretch
But it gets to its destination quite soon,doesn't it? 4 days? 14 days?
Can take a short rest then and have a bit of a stretch
https://earthsky.org/space/james-webb-space-telescope-30-days-of-terror/
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This telescope, under development for decades, has hundreds of moving parts that will need to unfold properly on its month-long trip to its final destination
That makes destination date 25th January
I did hear someone from this forum wants the telescope to focus on Earth and take sharp photos of UFOs whizzing around our atmosphere
Think I may have read that the journey is 4 times the distance to the Moonhttps://earthsky.org/space/james-webb-space-telescope-30-days-of-terror/
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This telescope, under development for decades, has hundreds of moving parts that will need to unfold properly on its month-long trip to its final destination
That makes destination date 25th January
I did hear someone from this forum wants the telescope to focus on Earth and take sharp photos of UFOs whizzing around our atmosphere
I was amazed when it lifted off and , about a half hour into its journey the cover was taken off the actual (folded up) telescope
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You could see the delicate gossamer like fabric hurtling along at thousands of mph relative to us but with zero hint of movement as,presumably it was no longer accelerating + the fact there was no atmosphere .
Parking orbit for telescope
https://www-space-com.cdn.ampprojec.../james-webb-space-telescope-beyond-moon-orbit
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This location is nearly 1 million miles (1.5 million kilometers) away from Earth on the side opposite the sun.
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As of Tuesday, Webb was more than 293,000 miles (471,000 kilometers) from Earth. The average distance from Earth to the moon is about 240,000 miles (384,000 km).
. ..busy evening! Not only did we just complete our second burn, but #NASAWebb also passed the altitude of the Moon as it keeps cruising on to the second Lagrange point .......
sculptor
Valued Senior Member
Not yet. I think the people working on this are taking a break.
The sunshield has been extended out along both booms, so that the final diamond shape of the shield is now established, but final tensioning of the 5 shield layers into their separated configuration hasn't taken place yet.
Kapton coated with a silicon layer and something else, I think. Their main function is to reflect infrared radiation, to prevent solar infrared on the sun side of the telescope from reaching the telescope and primary instruments on the dark side.