Yeah eh,, Scott mentions that a Sensor had failed, not sure if only one or more, considering two mirrors having a problem, , though also need to know where these sensors are and what they actually do apart from the obvious.
I'd think they be behind each mirror segment measuring each mirrors position, distance etc,,, Apart from that, its also mentioned that the motors that move the mirrors are all working which is a good thing for sure,, so maybe the plan of arranging all the other mirrors into locaton 1st and then try moving the two concerning segments manually or more like overiding the sensor mechanisms and attempt to allign these two by trail and error ?
Just a thought and my Bob's worth ?
Yeah eh,, Scott mentions that a Sensor had failed, not sure if only one or more, considering two mirrors having a problem, , though also need to know where these sensors are and what they actually do apart from the obvious.
I'd think they be behind each mirror segment measuring each mirrors position, distance etc,,, Apart from that, its also mentioned that the motors that move the mirrors are all working which is a good thing for sure,, so maybe the plan of arranging all the other mirrors into locaton 1st and then try moving the two concerning segments manually or more like overiding the sensor mechanisms and attempt to allign these two by trail and error ?
Just a thought and my Bob's worth ?
Have anybody heard of LUVOIR misson? I've found a video about this mission, interesting to watch. No sooner had they launched JWST than they started to make another huge telescope
Though as far as I know it's now only a concept, but I'm eager to see what it could show us
I like the idea of distributed telescopes though. Just like how Webb and LUVOIR are made up of multiple mirrors, and how the Square Kilometre Array is distributed over multiple countries, it'd be great to have a telescope system comprised of swarms of cameras that fly out to some huge distance. Multiple AU away. Spread out over the solar system.
I remember reading about such a system in a science fiction book by Alastair Reynolds where they were able to image exoplanets and see terrain with it.
JWST has reached its destination - L2.
Its first target will be a star in the constellation of Big Bear - HD84406.
Quote:
Now that JWST has reached its final destination in space, the mission team is getting the next-generation space telescope prepped for observations. A bright point like HD 84406 provides a helpful target by which the team can align JWST's honeycomb-shaped mirrors and to start gathering engineering data...
I just came across this video which explains the design and operation of the mirror actuators. It's a very ingenious design, which uses a single stepper motor and drive train for both coarse and fine positioning, and a combination of gearing and flexure to obtain ~2 nanometre precision. (The presenter has built a working replica with a commercially-available stepper motor and a 3D printer.)
hehe,, 
...both iterative at least 
,,, 
