They're what whir when you fiddle with a side-mirror adjustment knob. You're already familiar with mirror actuators if you've driven a modern car.
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Sivaramakrishnan said it's probably the support structure for the mirror, plus a cluster of motorized actuators that can move it. (Note: There is a moment in the NASA video that does appear to show the back of the secondary mirror.) Though we're not in the aerospace business, we don't want to violate ITAR - and possibly pay a million dollars.īut we can describe what's back there, generally speaking. James webb space telescope golden mirror complete nasa gsfc "I couldn't let him or her touch it." What isn't being shown? "If I had a piece of space hardware in my room, I may not be allowed to have a foreigner come into my room" per ITAR regulations, Sivaramakrishnan said.
"It's basically caution about space hardware details being released by the US government," Anand Sivaramakrishnan, an astronomer at the Space Telescope Science Institute in Baltimore, Maryland (which works closely with the JWST mission), told Business Insider. ITAR experts are common inside companies and agencies that work with space technologies, so one of them at NASA probably reviewed their video and said "this part has to be blurred out" to avoid a violation. Otherwise you might have to pay up to $1,094,010 and possibly face jail time for each violation. In fact, if you're working in the US - or for the country - on anything that could be even remotely considered a weapon, including a do-it-yourself spacesuit, you have to make sure it's not on the Department of State's ITAR munitions list. And the US government wants to maintain any edge it can over the militaries of countries like China and Russia. Why is the back of a mirror on a taxpayer-funded scientific observatory considered an "arm" that must be regulated?Īfter all, if your telescope can see as sharply as Hubble, yet resolve objects 10 to 100 times dimmer - as JWST should be able to do - that could be useful for peering down at human activity on Earth. James webb space telescope mirror reflection nasa It takes all of the giant primary mirror's light and focuses it onto a third mirror inside the telescope's housing, which then bounces it into a suite of detectors. "The secondary mirror relays light from the primary mirror and does optical correction."įor reference, below is JWST's secondary mirror with its convex, gold-plated surface. "That is the secondary mirror support structure with the secondary mirror on it, which includes details of mirror mounts," Chandler said. We then asked which company made the blurred-out part, and requested more details about it and its role in JWST's mission - which, by the way, is to study objects at the edge of the universe and quite possibly the air around Earth-like exoplanets. The government must respect the intellectual property of its industry partners," Chandler told Business Insider in an email. We provided the first image to Lynn Chandler, a NASA representative for JWST, and asked why the part circled in red was blurred out. (NASA's Goddard Space Flight Center Business Insider)
The video shows off many of those revolutionary technologies, including lightweight support structures, sensors, and more.īut we noticed that a crucial part of the telescope - about a minute and 30 seconds into the video - is blurred out beyond recognition: In case that's hard to see, here's a labeled screenshot: Before astrophysicists' dreams of building Webb could be realized, 10 technologies that did not exist needed to be created and perfected. "The efforts of thousands of people across the United States, Canada, and Europe, for almost two decades achieved this milestone," the narrator said. To commemorate the moment, the space agency's Goddard Space Flight Center released a dramatic video about the telescope on YouTube. NASA on Wednesday announced a huge milestone in its $8.7 billion James Webb Space Telescope mission: the completion of the observatory's gigantic golden mirror. James webb space telescope golden mirror person nasa gsfc
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