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What Is The Resolution on Planet Mars Using Optical Earth Observatories/?

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What Is The Resolution on Planet Mars Using Optical Earth Observatories/?

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  1. figure about 1 arc second angular resolution. what size object subtends this distance at opposition distance, 55 to 60 million km?


  2. The resolution varies depending upon its distance from the Earth and its orbit around the sun.

    In arc seconds it is not therefor constant, but to give you a guide, at opposition it varies between 14 arc seconds and 25 arc seconds.

    At conjunction it is only 4 arc seconds.
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