"Descriptions and data for all 2,700 star clusters, nebulae, and galaxies shown in Sky atlas 2000.0, 2nd edition, by Wil Tirion and Roger W. Sinnott".
Previous ed.: S.l. : R.A. Strong, 1994.
Sky atlas 2000.0 companion by Robert A. Strong. ISBN 0933346956. Published by Sky Pub. in 2000. Publication and catalogue information, links to buy online and reader comments.