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Re: [ATM] Telescope Focusing at Public Events
On 0, Wouter van Reeven <wouter@van.reeven.nl> wrote:
> The difference lies in being short sighted or far sighted. When a
> telescoped is focussed, it's focussed at infinity. Or at least at "very
> far away". People being far sighted are capable of seeing sharp images
> without glasses of objects far away. So, these people can see sharp
> images in telescopes focussed for people not wearing glasses. Short
> sighted people, on the other hand, need to focus a telescope to be able
> to get a sharp image.
Ah, I forgot something: short sighted people can wear glasses so they
don't need to refocus a telescope. However, this would require eye
pieces with long eye relieve or else they would miss parts of the field
of view.
Wouter
--
Black holes are where God is dividing by zero.
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