Question

Which of the following is an early drawback of HST?

• A. Its ground control system.
• B. Hubble failed to achieve a final sharp focus and the best image quality obtained was drastically lower.
• C. Images of point sources spread out over a radius of more than one arcsecond.
• D. All of the above

Answer 1

Answer: (B), (C)

The correct options are
B Hubble failed to achieve a final sharp focus and the best image quality obtained was drastically lower.
C Images of point sources spread out over a radius of more than one arcsecond.

As the early drawback of Hubble space telescope, Hubble filed to achieve a final sharp focus and the best image quality obtained was drastically lower. Also the image of point sources spread out over a radius of more than one arc second.