The Hubble Space Telescope (HST) has been used to observe the galaxy M100, some 70 million light-years from Earth. (a) If the angular resolution of the HST image is 0.1 arcsec, what is the diameter in light-years of the smallest detail that can be discerned in the image? (b) At what distance would a U.S. dime (diameter 1.8 cm) have an angular size of 0.1 arcsec? Give your answer in kilometers. (non-traditional age student returning for pscyhology degree! Told to take astronomy with no physics or calculus background at all! All help is appreciated!)
Hubble telescope & galaxy M100 question (astronomy)?
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