Linked Questions
10 questions linked to/from Why are eclipses of the James Webb by the Earth or Moon not permitted during the mission?
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How can electronics on board JWST survive the low operating temperature while it's difficult to survive lunar nights?
Compared to the temperatures encountered in lunar nights, the desired operating temperature of the James Webb Space Telescope is very low. Lunar nights are typically -170°C while the operating ...
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Is L2 at a distance where the Earth totally eclipses the Sun?
What is the furthest from the Earth that still offers a total eclipse of the Sun? Is L2 inside that distance? (I assume so due the the halo orbit that is planned but perhaps there are numerous other ...
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What is the difference between halo orbits and Lissajous orbits?
The Wikipedia articles for halo orbit and Lissajous orbit leave me wondering how these two orbits are different from an orbital mechanical point of view.
Could they be discussed together here, so I ...
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The design of the halo orbit of the James Webb Space Telescope
As I feel a little less uncomfortable with "halo" orbits, with this question, I would like to explore the practical aspects, in particular those related to the design of the James Webb Space ...
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Orbits permanently in shadow
The James Webb telescope is parked in a halo orbit around SEL2, beyond the Earth's umbra, to avoid solar eclipse by Earth or Moon. Is there anything else which could shade JWST?
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How will JWST manage solar pressure effects to maintain attitude and station keep it's unstable orbit?
The James Webb Space Telescope presents a huge reflective cross-section to the Sun's photons, and this can generate both torque and thrust.
How will JWST manage solar pressure effects to maintain ...
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Why is NASA choosing such a large “halo” orbit at L2 for JWST?
According to “https://webb.nasa.gov/content/about/orbit.html”, NASA plans to exploit a quarter million mile radius “halo” orbit at L2.
And Webb will orbit around L2, not sit stationary precisely at ...
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Could the Lunar Lagrange Points work for space telescopes?
Every orbit in space has its pros and cons. Low Earth Orbit has accessibility but frequent eclipses whereas a Solar Lagrange Point is clear and stable but distant. In the case of the Lunar Lagrange ...
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Is JWST going to be in antumbra at L2?
I read the years-old comments in this question & found a new question waiting an answer. Is JWST going to be in antumbra (aka annular Earth eclipse) in its halo orbit around L2?
I was of the ...
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How can back shield of JWST be 85-100 degrees Celsius hot if it will be in Earth's shadow?
I have heard, that back shield of James Webb space telescope will be as hot as 85-100 degrees of Celsius.
But how can it be, if it will be in Earth's shadow in L2?
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