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Old August 6th 09, 07:29 PM posted to sci.astro.amateur
Anthony Ayiomamitis[_1_]
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Default Partial Penumbral Eclipse Mathematics

On 6 Αύγ, 21:06, Dave Typinski wrote:
Anthony Ayiomamitis wrote:

On 6 ???, 17:42, Dave Typinski wrote:


Very nice; thanks! *I know not all computer monitors display the same
thing, but on mine it's easy to see the difference in brightness
around Tycho in the first two images. *I'm surprised that the third
image doesn't show a greater difference.


I am also disappointed with the third image and, in fact, I am
puzzled.


I pulled in into Photoshop and created a negative image; this
difference shows up better, but still not as much as one might think.
This may simply be the way visual perception works.

You could make it more apparent by editing the levels in Photoshop,
but then it wouldn't be "real."
--
Dave


Hi Dave,

I have been very careful in relation to the processing (or lack
thereof) for the same reason you cite ... the last thing is for some
wise guy to start making comments left, right and center.

Anthony.