12 PNG001.7-04.4: bcr since major/minor axis ratio of central region not 
12  consistent with tilted torus.
13 PNG003.6+03.1, PNG003.9-03.1, PNG008.6-02.6, PNG326.0-06.5, PNG351.9-01.9, 
13  PNG354.5+03.3, PNG354.9+03.5, PNG356.5-03.6, PNG356.8+03.3, PNG002.9-03.9, 
13  and PNG004.1-03.8 are Galactic Bulge PNs, and their distance is taken to 
13  be 8kpc.
14 PNG004.0-03.0: note the jet emanating at PA~30{deg}, a structure not covered 
14  in our morphological scheme. Making the assumption that the jet is launched 
14  roughly orthogonally to the waist of the nebula, the bright elliptical ring 
14  is identified as a tilted, toroidal waist (t descriptor) with its major axis
14  along PA~-55{deg}.
15 PNG004.9+04.9: the halo has an inner irregularly shaped brighter component, 
15  with a discernible periphery, and an outer, more typical diffuse component 
15  with a surface-brightness-limited size.
16 PNG010.8+18.0: the distance has been taken from Schwarz et al. 
16  (1997A&A...319..267S).
17  and Rexc estimated from spectrum in Suarez et al. (2006 Cat. J/A+A/458/173; 
17  object is listed as IRAS 17514-1555 in these studies.
18 PNG043.1+03.8: the h(a) descriptor is used to denote the presence of the 
18  faint, somewhat irregular, but complete ring in the halo, which surrounds 
18  the central bright nebula.
19 PNG051.5+00.2: Rexc estimated from spectrum in Kerber et al. 
19  (1996A&AS..119..423K); no distance estimate available, hence no estimate of 
19  age possible. Note that finding chart in Kerber et al. (1996A&AS..119..423K)
19  incorrectly points to a star 11.5" west of the PN, and the coordinates given
19  in Table 1 are incorrect. The J2000 SIMBAD coordinates of this source, 
19  RA=19:25:40.68, DE=+16:33:05.6, however, are consistent with the 
19  coordinates derived for the central star, from the HST image, 
19  RA=19:25:40.48, DE=+16:33:05.4.
20 PNG058.3-10.9: the bipolar lobes can be seen very faintly along PA~25{deg}; 
20  the t denotes the bright region with its major axis orthogonal to the 
20  lobe axis.
21 PNG061.3+03.6: the distance has been taken from Dobrincic et al. 
21  (2008AJ....135.2199D).
22 PNG064.7+05.0: the [OIII]/H{alpha} ratio is much less than unity; since the 
22  H{alpha} line is saturated in Acker et al. (1992, Cat. V/84), we have set 
22  the ratio to 0.
23 PNG067.9-00.2: the object may be bipolar (with lobes aligned along 
23  PA~90{deg}), with an obscuring waist and irregular structure, i.e., B, w, 
23  ir; however we have conservatively chosen I as the primary classification 
23  for this object.
24 PNG071.6-02.3: the elongated structure at PA~60{deg} is considered to be a 
24  second lobe pair, leading to its primary classification of M.
25 PNG093.9-00.1: the [OIII]/H{alpha} ratio is much smaller than unity, based on
25  spectroscopic data described in Sanchez Contreras et al. 
25  (2008ApJS..179..166S); distance is taken from Meixner et al. 
25  (1997ApJ...482..897M).
26 PNG110.1+01.9: the [OIII]/H{alpha} ratio has been set to zero based on the 
26  non-detection of [OIII] lambda5007 by Garcia Lario et al. 
26  (1991A&A...249..223G), and the distance has been taken from the same 
26  reference.
27 PK130-11#1: we use "*?," since given the diffuse, irregular shape of this 
27  object, and the presence of additional stars in the vicinity, we cannot be 
27  certain that the star near the center of this object is really the CSPN.
28 PNG146.7+07.6: because of the apparent large tilt of the nebular axis toward 
28  the line of sight, the lobes may also be open structures.
29 PNG147.4-02.3: the primary PN shape is assumed to be defined by the outer 
29  periphery in this image; the inner bright structure is an inner bubble 
29  (i.e., ib).
30 PNG232.8-04.7: the halo has an inner irregularly shaped brighter component, 
30  with a discernible periphery, and an outer, more typical diffuse component 
30  with a surface-brightness-limited size.
31 PNG296.4-06.9: the central region is described as "bcr?" because its extent 
31  and structure are not well resolved.
32 PNG300.7-02.0: this object shows a dusty structure which produces obscuration
32  as it cuts across the lower lobes, which is not captured in our primary and 
32  secondary descriptors.
33 PNG307.5-04.9: we have adopted values of the size and distance for this 
33  object (also known as MyCn 18), from Sahai et al. (1999AJ....118..468S). The
33  radially varying [N ii] expansion velocity, V1, is estimated from 
33  Equation (4) of Dayal et al. (2000AJ....119..315D) using a radius R set to 
33  half the size of the object. A ground-based image (Bryce et al., 
33  1997ApJ...487L.161B) shows distant ansae on both sides of the center.
34 PNG315.4+09.4: distance from Schwarz et al. (1989ApJ...344L..29S), note that 
34  the long-slit spectra in Corradi & Schwarz (1993A&A...268..714C) suggest 
34  much higher expansion velocities (>~100km/s), who derive a smaller expansion
34  age, <~920yr.
35 PNG321.0+03.9: distance from Sahai et al. (2000ApJ...543..880S).
36 PNG331.07-01.0: the w descriptor is used to denote the belt of obscuration 
36  (oriented along the minor axis of the object) that cuts across the inner 
36  regions of the bright bipolar lobes.
37 PNG331.5-02.7: we use "*?," since the "central" star is noticeably offset 
37  from the geometric center of the toroidal waist, and since there are many 
37  additional stars visible in its vicinity, we cannot be sure that this star 
37  is really the CSPN.
38 PNG332.9-09.9: the [OIII]/H{alpha} ratio has been set to zero based on the 
38  non-detection of [OIII] lambda5007 by De Marco & Crowther 
38  (1998MNRAS.296..419D), and the distance has been taken from the same 
38  reference. The object most likely possesses point symmetry by virtue of 
38  having at least two pairs of diametrically opposed lobes, but we assign it 
38  "ps(m)?" because the PA=180{deg} counterpart of the PA=0{deg} lobe is 
38  only partially visible.
39 PNG350.9+04.4: the t descriptor is used to describe bright inner ring 
39  structure, which is most likely a torus seen nearly face-on.
40 PNG355.4-02.4: we assign "bcr(o)?" to the central region, because although 
40  its extensions along the polar direction cannot be separated unambiguously 
40  from the low-latitude regions of the bipolar lobes.
41 PK355-04#2: the lobe at PA~0{deg} has a complex, "layered" periphery, with 
41  three layers.
42 PNG356.5-03.6: we describe the central region as "t?" because it appears to 
42  be somewhat less extended along the polar axis than along the equatorial 
42  plane; however its structure makes this assessment a bit uncertain.
43 PNG358.7+05.2: we have assigned this "E?," but, like PNG013.1+04.1, it may be
43  a bipolar object with its major axis oriented at a small angle to the line 
43  of sight, since a slight "pinching-in" of the primary shape can be seen 
43  along PA ~ 55{deg}.
44 PNG358.9-00.7: the central region is described as bcr(c), even though its 
44  shape is almost spherical, not barrel-like; the plethora of protrusions 
44  emanating from the main nebula body represents structures not covered in 
44  our morphological scheme.
45 PNG359.2+04.7: distance from Gesicki & Zijlstra (2007A&A...467L..29G).
46 PNG002.9-03.9: since there are two stars near the center, we speculate that 
46  these may represent a binary CSPN responsible for the spiral structure.
47 PNG003.8+05.3: although classified as I, faint nebulosity can be seen 
47  extending along PA~170{deg} and possibly PA~-15{deg}, suggesting that this 
47  may be really a B or L object with very faint lobes.
48 PNG004.1-03.8: the curved bright structure seen near the waist may represent 
48  a partial torus structure.
49 PNG005.2-18.6 and PNG006.8-19.8: based on their radial velocities, these PNs 
49  are believed to belong to the Sagittarius dwarf spheroidal galaxy 
49  (Zijlstra et al., 2006MNRAS.369..875Z) at a distance of 24.8kpc 
49  (Kunder & Chaboyer, 2009AJ....137.4478K).
50 PNG008.3-07.3: this object is classified as multipolar (M) because it has two
50  pairs of lobes at slightly different orients (in projection), i.e., at 
50  PA~5{deg},  17{deg}. We assign "bcr?" to the central region because the 
50  structure seen there could result from a pair of lobes projected almost 
50  directly toward the line of sight.
51 PNG010.7-06.4: in spite of its primary classification as I, there are two 
51  parallel, almost linear features on the left and right sides of the central 
51  star which motivate including the ps(s) descriptor.
52 PNG013.1+04.1: we have assigned this "B?," because it is quite possibly a 
52  bipolar object with its major axis oriented at a small angle to the line of 
52  sight. For the same reason, although the central region appears extended 
52  along the major axis, it is difficult to assess this extent, hence we use 
52  "bcr?" to describe this region.
53 PNG027.6-09.6: we assign the secondary descriptor "ib?" to this PN because 
53  although there appears to be an elliptical-shaped structure in the center, 
53  the additional structure within the central region makes its identification 
53  somewhat ambiguous.
54 PNG060.1-07.7: the central star and round halo are seen clearly in the F555W 
54  image and are therefore included in the morphological classification.