The Hubble Telescope's Field of View
Size of the Moon Illusion
The Angular Size of the Moon HST Field of View WFPC Moon Mosaic Copernicus Detail
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The Moon is only half a degree (30 minutes) across -
the same angular size as a pea held at arm's length.
Most people perceive the Moon to be much larger, particularly when it is near the horizon. |
Sources:
STScI-PR99-14 April 16, 1999 Hubble Shoots the Moon
STScI - Advanced Camera for Surveys
Michael Gallagher
1999 and 2003
