Re: [ATM] Ghosts in the Coulter

["Lawrence D. Lopez" <lopez@mv.mv.com>]

They are all the same size.
That is interesting.
That would mean the situation causing it all have constant magnification.

vorblesnak@peak.org wrote:
> I posted a question a few weeks back about Ghosts in a 10 inch Coulter.  I
> got a lot of great responses and one at a time they have all failed. 
> There are still ghosts on a bright image.  I looked at Venus with the
> scope and I see a nice bright image and 6 ghosts of Venus in a little
> cluster on the lighted side.  I have included a link to a simple sketch I
> uploaded to the board.
>
> http://www.atmlist.net/contrib/vorblesnak-at-peak-dot-org/Coulter%20Ghost/ghost%20in%20the%20Coulter.PNG
>
> The blue half circle represents the focused image.
>
> Could these all be eyepiece reflections?
>
> It is a very short focus scope, f4.1, is this sort of thing common in
> short focus scopes?
>
> David Davis
> Toledo, Or 97391
>
>
>
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>   

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