Le 29/03/2014 16:49, mark sroufe wrote :
Jean-marc --
I like the corrected version. I'm not clear what you did in Photoshop to distort.  Did you use "Free Transform" in the Edit drop down menu?
Thanks.
-- Mark


Hi Mark,

OK, I try to explain with my bad English. I used the tool you said, but not only and not in one way only.
To reduce this maximum Moon libration stereo base of Duncan Waldron = too much volume distort (left pict bellow), I first cut with Photoshop in the red channel a small  arc circle to one of the Moon border (copy of the shadow arc circle form passing on the moon), than also one cut to the opposite side of the Moon in the Blue channel than Green channel (cyan).  Like if the Libration was shorter (less part of the back side L&R border appear). Than to reduce the Moon pot belly already too much distort in the center I effectively apply on the red channel only the tool Free Transform, laterally only of course.
Than, I use it too diagonally because the Moon do not turn always on the same axes (see animated Gif bellow of Libration), so also a distort diagonal volume needed correcting. The Moon was too slim diagonally from right top to down left. I process with red/cyan glasses and stop when I found it nice.
To finish, like the result was not exactly a circle, but a Moon more slim laterally (because the cut borders L&R), I use the tool distort (circle capture around first) on all of the channels in the same time to got again a not too bad circle. But keeping in mind Moon and Earth are not exactly a perfect circle.

Jean-marc Henault (France)