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van Wulfen posted an update 7 years, 7 months ago
CSOG 2.2 – http://www.clearskies.eu/blog/csog-2-2/
Veel plezier ermee :-)
CSOG 2.2The third revision in four years. Double the number of editions, for a total of 40. New ones such as Abell Planetary Nebulae, Deep Sky Objects in Burnham’s Celestial Handbook, Rose Compact Gr…