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How does this storage hold up over time? I'm guessing that could be one of the limiting hardware elements. There must be some redundancy in that right?
68-GB solid-state drive [...] by the end of JWST’s 10-year mission life, they expect to be down to about 60 GB because of deep-space radiation and wear and tear.
https://news.ycombinator.com/item?id=32067945
https://spectrum.ieee.org/james-webb-telescope-communication...
One of the interesting things about this is all the tooling created around the JWST. Like there is even a downloadable app that you use to plan & book time. Plus all the documentation, etc.
https://github.com/spacetelescope
The Physical Optics Propagation in PYthon (Poppy) has some neat pictures: https://poppy-optics.readthedocs.io/en/latest/
Earlier quoted context omitted.
I know people who live within 30 minutes of me who get less than that - and I live in a college town.
They didn't have a 70m sized parabolic dish, though.
It's just highly impressive to me what we're able to accomplish when we actually focus effort on a task - including getting high-ish bandwidth back and forth between something in space.
I am sure there are better presentations out there, but this conference proceedings has some great pictures of the control systems in JWST [1] I was also able to find a high resolution picture of the spacewire interface card with its glorious space grade asic packages [2] Sadly the SSR is not shown, I assume that it is basically a gigantic sheet of sram and a fpga. [1] https://www.researchgate.net/publication/2339621…
The concepts of "low power" and "high speed" has changed a lot since JWST was designed.
One of the interesting things about this is all the tooling created around the JWST. Like there is even a downloadable app that you use to plan & book time. Plus all the documentation, etc.
I am sure there are better presentations out there, but this conference proceedings has some great pictures of the control systems in JWST [1] I was also able to find a high resolution picture of the spacewire interface card with its glorious space grade asic packages [2] Sadly the SSR is not shown, I assume that it is basically a gigantic sheet of sram and a fpga. [1] https://www.researchgate.net/publication/2339621…
> The JWST ICDH team delivered the SpaceWire technology – which is packaged in a digital, low power (1.5W), high speed (66Mbps) Field-Programmable Gate Array (FPGA) computer chip The concepts of "low power" and "high speed" has changed a lot since JWST was designed.
Say, a low-power, high-speed interface which is USB 3.2 only works via good copper cables and at distances of a few meters.
I am sure there are better presentations out there, but this conference proceedings has some great pictures of the control systems in JWST [1] I was also able to find a high resolution picture of the spacewire interface card with its glorious space grade asic packages [2] Sadly the SSR is not shown, I assume that it is basically a gigantic sheet of sram and a fpga. [1] https://www.researchgate.net/publication/2339621…
> The JWST ICDH team delivered the SpaceWire technology – which is packaged in a digital, low power (1.5W), high speed (66Mbps) Field-Programmable Gate Array (FPGA) computer chip The concepts of "low power" and "high speed" has changed a lot since JWST was designed.
One of the interesting things about this is all the tooling created around the JWST. Like there is even a downloadable app that you use to plan & book time. Plus all the documentation, etc.
If you mean the APT (Astronomer's Proposal Tool) this tool was originally developed for Hubble Space Telescope proposals, and has been in use since at least least 2008[0]. A year or two ago, I found that parts of it are written in Common Lisp[1].
[0] https://www.stsci.edu/scientific-community/software/astronom...
[1] https://apst.stsci.edu/apt/documents/documentation/apt-proje...
One of the interesting things about this is all the tooling created around the JWST. Like there is even a downloadable app that you use to plan & book time. Plus all the documentation, etc.
> Like there is even a downloadable app that you use to plan & book time If you mean the APT (Astronomer's Proposal Tool) this tool was originally developed for Hubble Space Telescope proposals, and has been in use since at least least 2008[0]. A year or two ago, I found that parts of it are written in Common Lisp[1]. [0] https://www.stsci.edu/scientific-community/software/astronom... [1] https://apst.stsci.edu/apt/d…