The
Caldwell Catalog, as that list has come to be known, comprises the target list for the only other A.
Of his many contributions to the field, the
Caldwell Catalog may be familiar to many readers (S&T: December 1995, page 38), a collection of 109 deep-sky objects that Moore assembled as an adjunct to Messier's list.
Given its low declination and inconspicuous appearance it would, perhaps, be little-known to northern observers if not for its inclusion in two popular observing lists: the Herschel 400 and the
Caldwell Catalog, as well as Walter Scott Houston's "Hydra Hysteria" tour (S&T: June and July 1991).
Deep-Sky Catalogs Abbreviation Catalog ACO Abell Galaxy Clusters Arp Arp's Peculiar Galaxies B Barnard's Catalog of 349 Dark Objects C
Caldwell Catalog Ced Cederblad's Catalog of Bright Diffuse Galactic Nebulae GCL Catalog of Galactic Globular Clusters H Herschel 400 H2 Herschel 2 HB93 Revised and Updated of Quasistellar Objects HCG Hickson's Compact Galaxy Groups IC Index Catalog (from NGC 2000.
Among them, British astronomy popularizer Patrick Caldwell-Moore picked 109 objects for his
Caldwell catalog (S&T: December 1995, page 38).
However, unlike Patrick Moore's
Caldwell catalog (S&T: December 1995, page 38), my list includes a solar-system "object" (the gegenschein), as well as red carbon stars, double and triple stars, unique asterisms, galaxy clusters, and a gravitationally lensed quasar (July issue, page 108).
Nicolas-Louis de Lacaille apparently overlooked this gem during his early sweeps of the southern skies, and later Patrick Moore passed it by when compiling his
Caldwell Catalog.
SITED ABOUT 3[degrees] SOUTHWEST of 2nd-magnitude Gamma Cygni, near the heart of the celestial Swan, lies the 27th entry in Patrick Moore's now-famous
Caldwell Catalog.
The appendixes provide detailed data on the
Caldwell Catalog and other information, such as the section that explains why the Double Cluster was not included in Messier's catalog.
Surprisingly, it didn't have the
Caldwell Catalog to make
He dubbed it the
Caldwell Catalog, after his middle name, partly because M objects stand for Messier, not Moore.
Except for the Astronomical League's 400-object Herschel list (S&T: September 1992, page 347), few have gained wide popularity Now the prolific English author and television personality Patrick Moore presents us with a new challenge: his
Caldwell Catalog.
