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If one mirror's actuators fail, it's over. I hope they have long life. "The Webb telescope will use 132 small motors (called actuators) to position and occasi
by chasil 5y ago
If one mirror's actuators fail, it's over.
I hope they have long life.
"The Webb telescope will use 132 small motors (called actuators) to position and occasionally adjust the optics as there are few environmental disturbances of a telescope in space."
https://en.m.wikipedia.org/wiki/James_Webb_Space_Telescope https://en.m.wikipedia.org/wiki/James_Webb_Space_Telescope
- cma 5y agoIf only one fails couldn't they do two-exposures with all the functioning ones making the smallest movement they can? Then the failed one's contribution can be decorrelated between the two exposures and removed since it stays the same throughout.
- kibwen 5y agoAIUI if any one mirror fails then they can continue on with degraded performance, it wouldn't mean the immediate end of the telescope's usefulness.