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From The Space Library
Displaying 1—10 of 46 matches for query "Autosumm-blank" retrieved in 0.000 sec with these stats:
- "autosumm" found 0 times in 0 documents
- "blank" found 74 times in 51 documents
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... yr and the spare by April 1979, for the process of grinding the blanks to an optical curvature. The blank would be l ft thick with a 2ft-diameter center hole, and ... , so that it maintained image quality. More than 40yr ago Corning had made the 200in blank for the Hale telescope out of borosilicate glass, having an expansion of 32.5 on a scale used by physicists; the material it would use for the space telescope blank would have an expansion of zero. Corning had chosen the new material, a titanium silicate ...
... .; the crack, extending radially more than 86 cm from the center hole, rendered the mirror blank useless. The original and replacement were cast from Cervit, a transparent ceramic material obtained by ... Space Telescope. When a different material was decided on for the Space Telescope, the Cervit blank was transferred to the infrared telescope project. Cervit had practically zero thermal expansion, making it ...
... Corning Glass Works, Canton, N.Y., had begun work on a foot-thick primary-mirror blank for the Space Telescope, for which the center would have overall management responsibility. The telescope ... and support system, and integrate the complete telescope. Glass had been used for the mirror blank as it would change shape only slightly with temperature changes during viewing; the titanium-silicate ...
... than one millionth of an inch from an ideally perfect surface.
Manufacture of the mirror blank began in October 1977 at Corning Glass Works, which delivered it to Perkin-Elmer in December 1978. The blank was made of a Corning product called ultra-low-expansion glass, which has extremely low ... expansion properties. Optical fabrication began with rough grinding of front and back surfaces of the blank, followed in August 1980 by fine polishing of the front surface, using; a computer-controlled ...
... about it, and then the instrumentation very
quickly thereafter, and then the thing went blank.
After it went blank, we had something called a SMEK Summary Message
Enable Keyboard . Has anybody talked ... 'd get a pretty good time history of what was
happening.
So the bird went blank and had ground systems down there go back and
replay that data for me, and ...
... . Lunney really got aggravated, I mean angry. He says, “CapCom capsule communicator , tell that blankety-blank-blank,” something or other. Jack John L. Swigert was the CapCom. He says, “Flight, we don ... powered it up to look at it, but basically we were sitting there with a blank screen most of the flight. I may not have been knowledgeable enough on the GNC ...
... used to represent geographic features in such terrain leave many areas essentially blank. On this map, however, there are no blank areas.... The map is easy to 'read' because the photo shows ...
... , Congress has permitted NASA to lead a charmed life, providing what amounted almost to a blank check for its operations and a free hand to its managers. NASA, it seemed ...
... the vanishing point. Free-fall casting techniques could be utilized to cast large flawless optical blanks for telescopes and by proper combinations of spinning and electrostatic forces we should be able ...
... out of hand. It should see to it that the Government does not write any blank checks and become overly involved in what is supposed to be a commercial venture. And ...
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