Hubble telescope having stubborn computer problems

Deane Clark · Post by **Deane Clark** » Wed Jun 23, 2021 8:45 pm

It’s not dead yet, but they don’t know what’s wrong even after 10 days.
https://www.npr.org/2021/06/23/10095673 ... he-telesco

setnes · Post by **setnes** » Wed Jun 23, 2021 8:50 pm

Did they try unplugging it and plugging it back in?

Deane Clark · Post by **Deane Clark** » Wed Jun 23, 2021 9:41 pm

I bet they would, but probably fear it wouldn’t come back on!

petemn2004 · Post by **petemn2004** » Thu Jun 24, 2021 3:13 pm

They are having issues with the payload computer. This is the same functional assembly that caused a substantial delay with the last servicing mission.

At that time they resurrected a spare payload computer assebly and fully tested it before the mission. The old one was pulled out of the telescope and replaced.

The payload computer has dual CPUs and multiple memory components and troubleshooting is taking place. This was 1980s technology.

Deane Clark · Post by **Deane Clark** » Fri Jul 16, 2021 4:48 pm

It’s back!
https://www.sciencemag.org/news/2021/07 ... ppears-fix

matt_2018 · Post by **matt_2018** » Fri Jul 16, 2021 10:53 pm

setnes wrote: ↑Wed Jun 23, 2021 8:50 pm Did they try unplugging it and plugging it back in?

It looks like Kris fixed it for them!

Deane Clark · Post by **Deane Clark** » Sat Jul 17, 2021 3:35 am

matt_2018 wrote: ↑Fri Jul 16, 2021 10:53 pm
setnes wrote: ↑Wed Jun 23, 2021 8:50 pm Did they try unplugging it and plugging it back in?
It looks like Kris fixed it for them!

Only if he plugged in the backup Power Control Unit

setnes · Post by **setnes** » Sat Jul 17, 2021 4:38 pm

Sometimes tapping the side with a big shoe helps.

SEmert · Post by **SEmert** » Sat Jul 17, 2021 10:26 pm

setnes wrote: ↑Sat Jul 17, 2021 4:38 pm Sometimes tapping the side with a big shoe helps.

Especially with collimation!

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Hubble telescope having stubborn computer problems

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