Hello,
I would like to package some additional catalogs for Skychart, but I
have some questions regarding license.
As you can see on skychart download page [1], each package has more than
one catalog inside. All of these catalogs are known to be public domain,
but there's no license file specified either in catalogs or on original
websites of the catalogs [2] [3]. Moreover, original catalog data is
reworked by skychart's developer to fit the main program, so the result
only work in skychart.
My question is: can additional catalogs subpackages be the case stated
at
https://fedoraproject.org/wiki/Packaging:LicensingGuidelines#Subpackage_Licensing
where it's not necessary to include own license? Or should I contact all
makers of the source data from wich these catalogs are built and ask
them the licenses?
Thank you
Mattia
[1] http://www.ap-i.net/skychart/en/download
[2] http://ad.usno.navy.mil/wds/
[3] http://www.astro.ku.dk/~erik/Tycho-2/
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