Physics, 19.07.2019 06:10 annaharmon693
You are trying to take an image of a particular star with apparent magnitude m=10, and need to figure out how long you will need to expose for with your telescope. your friend tells you that her telescope of diameter 0.05 metres can detect the star in 119.5 minutes.
a) if your telescope has diameter 0.18 metres, how long do you need to expose for? answer in minutes.
Answers: 3
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