A work of patience:
The #NASAWebb mirror deployment has started yesterday, moving ~1 mm/day for the next ~10 days for a total of 12.5 mm.
After that, they’ll be ready for @NASAWebb ultimate goal: mirror alignment! #JWST
The #NASAWebb mirror deployment has started yesterday, moving ~1 mm/day for the next ~10 days for a total of 12.5 mm.
After that, they’ll be ready for @NASAWebb ultimate goal: mirror alignment! #JWST
Each mirror has an individual designation: A, B, or C. This denotes to which segment belongs each of the three mirror prescriptions.
Each mirror, for better support during #Webb space ride, has on its back three rigid metal pegs. These nestled into matching holder sockets in the telescope structure. Before launch, the mirrors were all positioned with the pegs held in the sockets, providing extra support.
Now each mirror can be moved with small adjustments as small as 10 nanmometers, with an incredible precision.
To limit heat transferred to JWST cold mirrors, each actuator can be operated for a short period of time: ~1 mm/day: same speed at which grass grows! Slowly but steady
To limit heat transferred to JWST cold mirrors, each actuator can be operated for a short period of time: ~1 mm/day: same speed at which grass grows! Slowly but steady
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