The WFC3 (wide-field camera 3) of the Hubble space telescope has a field of view (in square degrees) equal to 1.98 × 10⁻³ sq. deg., which translates into 25600 square seconds of arc.
The images beamed down to Earth by Hubble when using WFC3 are squares with sides equal to 160", about one-tenth of the diameter of the Moon, from the Earth.
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