Re: [ATM] How far from the telescope should an artifical star beplaced

[Kevin MIchael Zabbo <chaosopher23@yahoo.com>]

How far away can you get the fake star?  30 feet?  100
yards?  A mile?  I guess that further away is better,
but if you have at your disposal two mountain tops,
you will still have to deal with atmospheric
turbulence from the valley below.  A hundred feet is
probably sufficient.

Kevin of Eastern Iowa
Seeker of the Darkness

--- Bruce MacDonald <brumac@gmail.com> wrote:

> G'Day all...
> "As far as necessary such that the rays of light
> from the pinpoint
> source are effectively parallel to each other when
> they encounter the
> objective mirror"
> 
> OK, how far is that?
> 
> Thanks,
> BM
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> 


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