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Highly accurate data processing.
@18 million stars
530,000stars from Hipparcos,Tycho2.
18,000,000 stars are added from GSC in Professional Edition.
@10,000 nebula and cluster
10,000 data.and 10.000 images. (Image data is only in Professional Edition.)
@Correction
precessional equinoxes, parallax, atmospheric refraction, e.t.c. |
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