What flaw did the Hubble telescope have what did we do about the flaw?

The result was a mirror with an aberration one-50th the thickness of a human hair, in the grinding of the mirror. Replacing the mirror was not practical, so the best solution was to build replacement instruments that fixed the flaw much the same way a pair of glasses correct the vision of a near-sighted person.

What was the error with the Hubble telescope?

History: The Spherical Aberration Problem. Hubble’s main mirror being polished before installation. The edges of the were polished very slightly too flat, leaving the telescope unable to focus perfectly. We have come to take the excellent performance of the Hubble Space Telescope for granted.

Does NASA use metric or imperial?

Although NASA has ostensibly used the metric system since about 1990, English units linger on in much of the U.S. aerospace industry. In practice, this has meant that many missions continue to use English units, and some missions end up using both English and metric units.

What was wrong with Hubble and how did they fix it?

NASA finally fixed the Hubble Space Telescope after nearly five weeks without science operations. Hubble switched to backup hardware to correct the mysterious glitch that took it offline. Hubble’s age likely caused the problem.

What was the major problem with the Hubble Space Telescope when it was first launched into orbit group of answer choices?

Hubble discoveries | a timeline 1990 | The Hubble Space Telescope is launched, after almost twenty years of planning. 1993 | When Hubble was first launched, a mistake with its mirror caused a large blurring effect that severely hampered its ability to complete ground breaking astronomy.

What was the main problem when Hubble was finally launched into orbit?

spherical aberration
Hubble was finally launched in 1990, but its main mirror had been ground incorrectly, resulting in spherical aberration that compromised the telescope’s capabilities. The optics were corrected to their intended quality by a servicing mission in 1993.

What went wrong with the Hubble telescope?

After Hubble was launched in 1990, NASA discovered that the primary mirror had an error called “spherical aberration.” The curvature of the mirror was off by less than one millionth of a meter — or a mere 1/50th the width of a human hair. But it was enough to leave Hubble’s images slightly blurry compared to what they should have been.

Why did NASA choose a null corrector for Hubble?

NASA says that it trusted the refractive null corrector because it had been ‘certified’ for final tests of the mirror’s shape. Perkin-Elmer, which built Hubble at its Danbury plant in Connecticut, tested the primary and secondary mirrors separately, but no one tested the complete telescope before launch.

What makes Hubble’s primary mirror so lightweight?

Though the primary mirror is large, it was designed to be as lightweight as possible. Instead of a solid core, Hubble’s primary mirror has a honeycomb core, reducing its weight from 8,000 pounds (3,636 kg) to 1,800 pounds (818 kg). Both mirrors are coated with thin layers of aluminum and magnesium fluoride.

Did Perkin-Elmer test Hubble before launch?

Perkin-Elmer, which built Hubble at its Danbury plant in Connecticut, tested the primary and secondary mirrors separately, but no one tested the complete telescope before launch. An earlier check by NASA absolved the design itself of blame, leading the agency to narrow the inquiry to possible errors in the testing of the mirrors.