Re: Black-drop - is it real?

From: Pete Lawrence (pete.lawrence_nospam__at_pbl33.co.uk)
Date: 06/11/04 

Date: Fri, 11 Jun 2004 09:55:58 +0100

On Thu, 10 Jun 2004 13:03:34 -0400, "Benign Vanilla"
<BVremove@tibetanbeefgarden.com> wrote:

>
>"Pete Lawrence" <pete.lawrence_nospam_@pbl33.co.uk> wrote in message
>news:d19ec0pm9pa054ctqisdlaeiheqto3n9uh@4ax.com...
>> On Wed, 09 Jun 2004 14:35:13 GMT, Sam Wormley <swormley1@mchsi.com>
>> wrote:
>>
>> >I didn't see a hint of it in the first hour of the transit--looking via
>> >web cams and nasa tv. Got clouded out for the direct observation. :-(
>>
>> Bad news Sam - I'm sorry you missed it :(
>>
>> A lot of solar projection observations mention the black-drop effect.
>> Was there anyone out there that saw the transit with a projection
>> arrangement but didn't see the black-drop?
>
>I used an 8'' Newt projected on to a piece of paper. I am a newbie so my
>quality is not great. In this pic,
>http://www.darofamily.com/jeff/files/2004/venus/p1010065.jpg, I believe
>there is some black drop.

That's a really nice pic, and for a newbie, ou should be pretty proud
of it!

Like a number of other pics I've had, the black-drop appears to be
'stimulated' in pics like this from a degree of chromatic fringing
around the dark edges. What eyepiece (fl + type) were you using?
What were your sky conditions like? 

-- 
Pete Lawrence
http://www.pbl33.co.uk
Most recent images <http://www.pbl33.fast24.co.uk/recent_images.html>

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