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Once it had been identified in 1990 that the primary mirror in the recently launched Hubble Space Telescope (HST) was defective due to it having been ground to the wrong shape, engineers at NASA came under immense pressure to fix the problem.
The Hubble Space Telescope (HST or Hubble) is a space telescope that was launched into low Earth orbit in 1990 and remains in operation. It was not the first space telescope , but it is one of the largest and most versatile, renowned as a vital research tool and as a public relations boon for astronomy .
Now the Webb telescope has confirmed those unexpected measurements, which were previously shown by Nasa’s Hubble Space Telescope. That suggests there is something unknown happening in the ...
The Hubble Space Telescope has temporarily stopped observing the cosmos. NASA said the telescope slipped into a hibernating state more than a week ago when one of its three remaining gyroscopes ...
NASA is changing the way the Hubble Space Telescope operates to bypass an issue that keeps putting the space observatory into “safe mode” shutting down its work.
Less famously, this has happened in other cases as well, such as the New Technology Telescope. [3] Originally, there was no easy way to test a null corrector, so mirror fabricators needed to take extra care that the lenses were correct and spaced correctly (this second part, spacing, was the source of the Hubble null corrector failure). [2]
Two years of data from NASA's James Webb Space Telescope have now validated the Hubble Space Telescope's earlier finding that the rate of the universe's expansion is faster - by about 8% - than ...
Early Hubble Space Telescope images were distorted by a flawed mirror and were sharpened by deconvolution. The usual method is to assume that the optical path through the instrument is optically perfect, convolved with a point spread function (PSF), that is, a mathematical function that describes the distortion in terms of the pathway a ...