1+6BBBBBCObject Catalogs Abell George Abell (planetary nebulae and galaxy clusters) ADS Aitken Double Star catalog AM Arp-Madore (globular clusters) Antalova (open clusters) Ap Apriamasvili (planetary nebulae) Arp Halton Arp (interacting galaxies) Bark Barkhatova (open clusters) B Barnard (dark nebulae) Basel (open clusters) BD Bonner Durchmusterung (stars) Berk Berkeley (open clusters) Be Bernes (dark nebulae) Biur Biurakan (open clusters) Blanco (open clusters) Bochum (open clusters) Ced Cederblad (bright nebulae) Cr Collinder (open clusters) Czernik (open clusters) DDO David Dunlap Observatory (dwarf galaxies) Do Dolidze (open clusters) DoDz Dolidze-Dzimselejsvili (open clusters) Dun Dunlop (globular clusters) Fein Feinstein (open clusters) Frolov (open clusters) Gum (bright nebulae) H William Herschel (globular clusters) Haffner (open clusters) Harvard (open clusters) He Henize (planetary nebulae) Hogg (open clusters) HP Haute Provence (globular clusters) Hu Humason (planetary nebulae) IC 1st and 2nd Index Catalogs to the NGC (All types of objects except dark nebulae) Isk Iskudarian (open clusters) J Jonckheere (planetary nebulae) K Kohoutek (planetary nebulae) King (open clusters) Kr Krasnogorskaja (planetary nebulae) Lac Lacaille (globular clusters) Loden (open clusters) LDN Lynds (dark nebulae) Lynga (open clusters) M Messier (all types of objects except dark nebula) MCG Morphological Catalog of Galaxies Me Merrill (plantary nebulae) Mrk Markarian (open clusters and galaxies) Mel Melotte (open clusters) M1 thru M4 Minkowski (planetary nebulae) NGC New General Catalog of Nebulae & Clusters of Stars. (All types of objects except dark nebulae) Pal Palomar (globular clusters) PC Peimbert and Costero (planetary nebulae) Pismis (open clusters) PK Perek & Kohoutek (planetary nebulae) RCW Rodgers, Campbell, & Whiteoak (bright nebulae) Roslund (open clusters) Ru Ruprecht (open clusters) Sa Sandqvist (dark nebulae) Sher (open clusters) Sh Sharpless (bright nebulae) SL Sandqvist & Lindroos (dark nebulae) SL Shapley & Lindsay (clusters in LMC) Steph Stephenson (open clusters) Stock (open clusters) Ter Terzan (globular clusters) Tombaugh (open clusters) Ton Tonantzintla (globular clusters) Tr Trumpler (open clusters) UA Catalog of selected Non-UGC galaxies UGC Uppsala General Catalog (galaxies) UKS United Kingdom Schmidt (globular clusters) Upgren (open clusters) VV Vorontsov-Velyaminov (interacting galaxies) vdB van den Bergh (open clusters, bright nebulae) vdBH van den Bergh & Herbst (bright nebulae) vdB-Ha van den Bergh-Hagen (open clusters) Vy Vyssotsky (planetary nebulae) Waterloo (open clusters) Westr Westerlund (open clusters) Zw Zwicky (galaxies) Object Types Asterism Bright Nebula Cluster with Nebulosity Dark Nebula Galaxy cluster Galaxy Globular Cluster Diffuse Nebula in a Galaxy Globular Cluster in a Galaxy Cluster with Nebulosity in a Galaxy Cluster with Nebulosity in the LMC Diffuse Nebula in the LMC Globular Cluster in the LMC Open cluster in the LMC Nonexistent in RNGC Open Cluster Planetary Nebula Cluster with Nebulosity in the SMC Diffuse Nebula in the SMC Globular Cluster in the SMC Open cluster in the SMC Supernova Remnant Quasar Unverified Southern Object Multiple Star Descriptions The descriptions use the abbreviations from the NGC and Burnham's. ! remarkable object !! very remarkable object am among n north att attached N nucleus bet between neb nebula, nebulosity B bright P w paired with b brighter p pretty (before F,B,L or S) C compressed p preceding c considerably P poor Cl cluster R round D double Ri rich def defined r not well resolved, mottled deg degrees rr partially resolved diam diameter rrr well resolved dif diffuse S small E elongated s suddenly e extremely s south er easily resolved sc scattered F faint susp suspected f following st star or stellar g gradually v very iF irregular figure var variable inv involved nf north following irr irregular np north preceding L large sf south following l little sp south preceding mag magnitude 11m 11th magnitude M middle 8... 8th magnitude and fainter m much 9...13 9th to 13th magnitude NGC Abbreviations NGC Number Description Decoded Descriptions 214 pF, pS, lE, gvlbM pretty faint, pretty small, little elongated gradually very little brighter in the middle 708 vF, vS, R very faint, very small, round 891 B, vL, vmE bright, very large, very much elongated 7009 !, vB, S remarkable object, very bright, small 2099 ! B, vRi, mC remarkable object, bright, very rich, much compressed 6643 pB,pL,E50,2 st p pretty bright, pretty large, elongated in position angle 50 degrees, two stars preceding Trumpler type for open clusters Concentration I. Detached, strong concentration toward the center II. Detached, weak concentration toward the center III. Detached, no concentration toward the center IV. Not well detached from surrounding star field Range in brightness 1. Small 2. Moderate range 3. Large range Richness p Poor (<50 stars) m Moderately rich (50-100 stars) r Rich (>100 stars) An "n" following the Trumpler type denotes nebulosity in cluster Shapley-Sawyer concentration rating for globular clusters The values range from 1 to 12, smaller numbers are more concentrated clusters. Vorontsov-Velyaminov type for planetary nebulae 1. Stellar 2. Smooth disk (a, brighter center; b, uniform brightness; c, traces of ring structure) 3. Irregular disk (a, very irregular brightness; b, traces of ring structure) 4. Ring structure 5. Irregular form similar to diffuse nebula 6. Anomalous form, no regular structure Some very complex forms may combine two types. Hubble type for galaxies E elliptical, E0 is roundest to E7 is flattest subgroups; 'd' is dwarf, 'c' is supergiant, 'D' has diffuse halo S Spiral, 'a' has tightly wound arms, 'b' has moderately wound arms and 'c' has loosely wound arms SB Spiral with central bar Ir Irregular C galaxies UGC Uppsala General Catalog (galaxies) UKS United Kingdom Schmidt (gv r m1i=d`[W/SO/J /3w@so&k[gcc_1ZVR N#J #+w@so&k[gcc_1ZVR N#J1X:[u9h#>_w>b7n0k0f! K o 7 a  D q   2 ? O W i  $ $ = R ` r -/1?A#/M[hx'0=IV_s$8AUcw1J 13Bw(4IY[eey35n  %'+-n  Arial Description Decoded Descriptions 214 pF, pS, lE, gvlbM pretty faint, pretty small, little elongated gradually v