Quote:
Originally Posted by bird
Almost all scopes have a limit for how close they can focus, since an object that is close will not have it's light rays coming in parallel. This is normally many metres (maybe 50m) so I wouldn't worry too much about trying to focus on anything closer :-)
cheers, Bird
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Yep, just amble over to it and have a closer look!
Oh that we could do the same thing with much more distant objects! Which explains why we send spacecraft with cameras out as far as we can - they will always give more detail (within the limits of equipment/experiment design) than pointing a lens or a mirror at the object from Earth.