Many USAF space officers were not aware that there even was a separate highly classified space program. (You'd have to be pretty dense to not suspect something, but many people simply don't look around outside of their own narrow subject area.)
Quote beryllium mirrorsTalk about a toxic mirror... eeewww
The KH-10 MOL mirror was glass. We know this because those mirrors are currently on the ground in Arizona.
A major test issue for the JWST segments is making sure that they have the right shape at cryogenic operating temperatures; there is a thermal vacuum chamber in Huntsville big enough to test three at a time on a partial duplicate of the JWST structure. That started life as the X-ray calibration facility, which the Chandra team wanted badly but had trouble getting funded. To hear the project scientist tell it, the week after the Hubble mirror fiasco became public, they got a phone call asking where they wanted their $140 million, 500-meter-long vacuum facility.
Quote from: Blackstar on 03/19/2010 11:51 amThe KH-10 MOL mirror was glass. We know this because those mirrors are currently on the ground in Arizona.Anybody know where those are now?
I thought that the intensifier discussion was also a little surprising. For those who did not read it, the Purcell Panel (a group of top camera and telescope experts) wrote in 1963 that there was this new technology for image intensifying (essentially night vision) and it might have applications to reconnaissance satellites. But anybody who has seen a night vision scope, or particularly television footage of early, Vietnam-era, night vision knows that the resolution was horrible. So I doubt that this technology made its way into reconnaissance satellites. CCDs yes, and they naturally have some sensitivity in the infrared.