Black-drop - is it real?

(fxmurphy2001) wrote in message om...
You are saying the Venus atmosphere was very obvious, visually? I am
wondering what type of telescope and solar filter you were using. I
had hoped to see this, but I never did. I was using a glass solar
filter, which I think made it way to dark for observing the Venus
atmosphere.

I used a 185mm f/16 (3m f.l.) home made Maksutov Cassegrain with
Baader "photographic" filter (ND=3.8). Venus was only ~20 degrees
above the horison from my site.

Have you a web site that your images are posted?

No. I may find something appropriate though, I'll post the address.

Bratislav

http://home.woh.rr.com/directoryww/0...itOfVenus.html

Your images are underexposed. Take the 10th from the bottom and
adjust the levels. A "black drop effect" (or at least what other
people have posted as "black drop") appears.

Did it in PhotoShop- Mac G-4 21" Plasma screen... Still don't see it .
are you maybe using a small screen Laptop ? Maybe some people see it
and some don't .. I know other things like that .. (like .... UFO's?
) JUST KIDDING!!!

I do see Blue on one side of Venus and Red on the other side . I
assume this is simple Chromatic Aberration from the mead ETX125?

http://home.woh.rr.com/directoryww/0...itOfVenus.html

Your images are underexposed. Take the 10th from the bottom and
adjust the levels. A "black drop effect" (or at least what other
people have posted as "black drop") appears.

Did it in PhotoShop- Mac G-4 21" Plasma screen... Still don't see it .
are you maybe using a small screen Laptop ? Maybe some people see it
and some don't .. I know other things like that .. (like .... UFO's?
) JUST KIDDING!!!

I do see Blue on one side of Venus and Red on the other side . I
assume this is simple Chromatic Aberration from the mead ETX125?