Hubble consistently delivers images of the cosmos, while his handlers point to distant galaxies and star clusters, but the imaging capabilities have not always been so stunning. The telescope was launched in early 1990, and in the early years of its life it fell short of its high expectations.
You see, a bug in the telescope mirror caused many of his images to blur Only when the lens was in orbit did the scientists realize how bad it was. In 1993, NASA decided to fix the problem, and now that the agency is celebrating the 25th anniversary of the first Hubble maintenance mission, we can look back and see how well they've done it. 19659003 At the time they were not sure how much better the pictures would be after the mirror had been replaced with a new one. They knew the pictures were bad at the time, but how much they could improve was not known yet. So, before and after, they took pictures of some distant visions in outer space to compare them side by side with the flawed mirror and the new one.
As you can see both in the picture A picture at the top of the page and the one directly above it is a dramatic difference. By itself, the images on the left side of the comparisons are neat, but with the added context of how good they could have been, we can see how much the failed mirror has held back the telescope.
The picture had to be taken before astronauts exchanged the camera with the visionary corrected Wide Field and Planetary Camera 2 in December 1993, "explains NASA. "After the maintenance mission, Hubble took another picture of the galaxy and the focus is clear. The audience celebrated with Hubble's triumphant return to the clear vision that had been promised. The breathtaking images of the vast universe that followed have not disappointed the space enthusiasts. "