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On Monday, Oct 6, 2003, at 17:46 US/Eastern, Andrew Corl wrote:
> I was recently reading the journals of Lewis and Clark. They mention
> taking several telescopes with them on their voyage. Further research
> told me that one of the telescopes was an “Achromatic Telescope.”
> Could anyone tell me (or refer me to a website) what this type of
> telescope is. If there are plans available for this I would
> appreciate that link as well. I am mainly interested in being able to
> see the moons of Jupiter (gives you an idea of the magnification I am
> looking for).
>
>
>
> Andrew
>
>
Andrew,
The achromatic telescope would be one that has been corrected for
chromatic aberration. I would guess it was a 2-4" refracting scope,
which would be sufficient for viewing the moons of Jupiter.
Fred Hebard
