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…