Re: [APML] The Atmosphere of Venus

[Ken Webb <rvastro@yahoo.com>]

I looked up some info, and that indeed is the
atmosphere of Venus. The effect was first observed in
1761 by Lomonosov which he attributed to the presence
of an atmosphere around Venus. Later Schroter
confirmed that Venus did have an atmosphere later that
century.

source: Atlas of the Solar System  by Moore and Hunt

Ken

--- Richard Crisp <rdcrisp@earthlink.net> wrote:
> I vote for it being the atmosphere. I don't believe
> diffraction can cause
> this.
> 
> On the other hand, I believe diffraction and poor
> seeing and perhaps optical
> aberrations are what cause the reported black drop
> effect. You can see that
> in your own hand by putting your index finger and
> thumb in close proximity
> and defocus your eyes. You will see the same black
> drop effect in my
> opinion.
> rdc
> 
> 
> ----- Original Message ----- 
> From: "Jerry Lodriguss" <jerryapml@astropix.com>
> To: "Discussion of Film Astrophotography"
> <astro-photo@seds.org>
> Sent: Thursday, June 10, 2004 9:48 AM
> Subject: RE: [APML] The Atmosphere of Venus
> 
> 
> > More pix that claim to show the atmosphere of
> Venus:
> >
> >
>
http://science.nasa.gov/spaceweather/venustransit/08jun04f/pang1.jpg
> >
> >
>
http://www.princeton.edu/~rvdb/images/SunVenusC034.jpg
> >
> >
>
http://science.nasa.gov/spaceweather/venustransit/08jun04d/Koeman1.jpg
> >
> >
>
http://science.nasa.gov/spaceweather/venustransit/08jun04d/zhu2.jpg
> >
> >
>
http://science.nasa.gov/spaceweather/venustransit/08jun04f/Alves1.gif
> >
> >
>
http://mysky.org/mysky/?article_get=1&article=1:15414&group=1
> >
> >
>
http://www.buytelescopes.com/gallery/view_photo.asp?pid=2715
> >
> >
> > Any more?
> >
> >
> > Jerry
> > _______________________________________________
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> 
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