What resolution (in arcseconds) could Hubble achieve before the initial repair mission?
Answer
0.1 arcsecond
Due to the optical defect, Hubble could only resolve features down to about 0.1 arcsecond, instead of the expected 0.05 arcsecond.
Related Questions
In what year did the Hubble Space Telescope debut into orbit?What specific optical defect severely blurred Hubble's initial images?By approximately how much were the edges of Hubble's primary mirror too shallow?What resolution (in arcseconds) could Hubble achieve before the initial repair mission?When did the first servicing mission (STS-61) take place to install corrective optics?Which instrument was installed primarily to intercept the aberrated light path and redirect it correctly?How many small, precisely shaped mirrors did COSTAR contain to compensate for the primary mirror error?What fundamental cosmological measurement did Hubble help refine after its vision was corrected?Which galaxy's center did Hubble provide the first direct visual evidence of a supermassive black hole in?For the first few years of operation, how did Hubble's data quality compare to many well-maintained ground-based observatories on a clear night?