Re: [APML] Flat moon ==> 3D relief

[Philip Perkins <pgp@astrocruise.com>]

Hi Rhino,

That's a very interesting technique.  A part of me is a little wary of what 
I would call "transformation processing" (always keeping in the back of my 
mind that astronomy is a science) though if something is presented as 
"astro art" then I have no misgivings.  I think the processing needs a 
light touch, for example to prevent the Maria from appearing as raised 
rather than depressed areas on the surface, and other "transforms of 
reality" <g>

I regard deconvolution differently, providing it is limited to "backwards 
convolving" an image into what it would have been if not distorted by the 
earth's atmosphere.

Thanks for an interesting technique!
--Philip

At 22:48 01/12/2003 -0500, you wrote:

>         Many of us have lamented the flat 2D appearance of our moon 
> shots, usually
>resorting to sharpening or to playing with contrast at the edge of the
>dark/illuminated surfaces. Have a look at the two before/after shots taken
>of full moon and last month's eclipse. I may have stumbled across a better
>mouse trap...
>
>http://www.zerone.ca/3d-moon.jpg
>
>
>         Using Corel PhotoPaint, Effects ==> 3D Effects ==> Emboss
>         Depth = 2, level = 250
>         Direction = away from apparent light source (50 deg in the above 
> case)
>
>The result is an immediate, dramatic *WOW* in visual appeal, and works
>equally well on other structures such as pinwheel galaxies... What d'ya
>think ?
>
>
>Regards,
>
>         Rhino.
>http://www.zerone.ca/twinkles.htm


Philip Perkins
<pgp@astrocruise.com>
Wiltshire UK & Luberon France
http://www.astrocruise.com


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