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Program: Virtual Moon Atlas
http://www.ap-i.net/avl/en/start
License: GPL
Description: Moon atlas intended for telescope/binocular observation
It is a nice program to identify moon craters.
The copyrighted photo libraries can be separately downloaded, so i think it can be packaged as a portableapp.
this looks nice
I'll use this on Linux for sure
I have installed in my linux box and runs fine, if you use a 64 bit linux you have to change the path to libplan404.so, the shortcut looks for it at /usr/lib and it is in /usr/lib64.
Very nice... might take a go at it 
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