Planetary nebulae (PN)
are the final stage in the evolution of most low‑ and intermediate‑mass
stars. These nebulae are fascinating not only from an astrophysical but also
from an observational standpoint. There are some few PNs bright and easy, but
these are the exception. Most PNs are difficult targets that require the aid of
good finding charts, nebular filters and blinking techniques. Challenging to be
observed, these objects have remained my favorite deep sky objects since many
years ago. In this page I will show you what is a planetary
nebula (origin and physical features), and I
will provide a catalogue with more than 800 of
these nebulae.
The picture on the left,
taken by the Hubble Space Telescope (as the others shown in this page), is
IC 418, a representative example
of planetary nebula (PN). Ideally, these nebulae are remarkably symmetrical
gas shells surrounding ultra‑hot stars, reaching up to 150,000 K. What
seems a small although very hot ordinary star is indeed the degenerated core
of a dying red giant star in transit to white dwarf.
The story of these
ghostly objects is closely related to low and intermediate mass red giants. Too
heavy stars (>8 solar masses, ms) with inefficient loss mass
mechanisms will finish their live exploding as supernovae whereas too light
stars (<0.08 ms) will not be able to ignite hydrogen and are
condemned to thermal dead. On the contrary, intermediate stars such as our Sun
will have a long and peaceful life that will last several thousand millions
years. During that time, hydrogen will be transformed in helium within the
core, keeping the energy output almost unchanged. Actually, the process brings
as consequence a small but significant increase in energy output from the
position occupied by the star in the zero age main sequence. However, the
growing amount of helium gradually impoverishes the fuel. In low mass stars,
convection can mitigate somewhat the self‑poisoning by refreshing the
nuclear fuel. However, eventually the energy supply ends up becoming unstable:
the hydrogen content reaches critically low levels and helium nucleosynthesis
within the core cannot proceed anymore. Thus, thermal pressure cannot balance
the gravity, and unable to support its own weight, the core contracts, becoming
hotter as potential energy is released. The active burning region then moves to
the contiguous spherical layers, ending in this way the stable life as a main
sequence star. The outer layers inflate and redden. The star is now a red
giant. What happens after the main sequence stage essentially depends on the
star mass.
Below 0.5 ms
the fusion shell just moves gradiually outwards up to nearly reach the stellar
surface, and then turns off. After that, the gaseous outer layers collapse
onto the core and degenerate to give rise to an helium white dwarf in slow
cooling. For stars exceeding 0.5 ms the picture is rather different:
the core shrinking allows reaching higher temperatures, around 120 million
kelvin, which means that helium ashes may ignite and evolve to carbon and
oxygen. However, if the mass is below 2.5 ms, the core is degenerated
at the start of helium burning and cannot absorb the new energy excess by
swelling. As a result, the shell surrounding the core reaches an instability
state. The nuclear burning accelerates exponentially until an explosive estate,
igniting out of control in a sudden thermal pulse. A significant fraction
of the remaining outer layers are then exhaled in a catastrophic episode called
helium flash. In these episodes, the star moves in H-R diagram following the
asymptotic giant branch (i.e., it increases its temperature while keeps its
luminosity). The energy supply breaks the degeneration condition and helps
the core to burn quiescently helium. The equilibrium is finally restored,
at least for a time, but at the end all the outer hydrogen-rich layers are
ejected in repeated pulses, giving rise to a planetary nebulae. Larger stars
(between 2.5 and 8 ms) evolve similarly, altough their core is
not degenerated when the helium ignites but later, in further stages of evolution,
once the core density has been significantly increased. Degeneracy also gives
rise to helium flashes in these stars. Anyhow, all these processes are able
to keep the energy demands for some thousand years during which a significant
fraction of the outer layers of the star are ejected. Above 600 million kelvin
the carbon may ignite, but the stellar mass should exceed 8 ms
and these stars do not finish as PNs. In final stages the star becomes enormous,
pulsating as a reflect of the increasing tragedy in energy output, and the
surface cools below 2,000 K, allowing the condensation of carbon, oxides
and light molecules, which darken its surface. It is an asymptotic giant brach
(AGB) red giant.
AGB stars contain most
of their mass in the inflated layers, gathering the nucleus about 0.6 to 1.4
ms for stars initially having one and eight solar masses, respectively.
Surrounding the nucleus there is a declining, quiet hydrogen‑burning
shell where hydrogen fusion is restricted, and below it an helium‑burning
shell and the core. The nuclear ashes gradually sinks into the core. Because
of their huge size (they may exceed 1000 times the radius of the Sun), the
hydrogen‑rich outer layers of the star are too weakly bound, and they
are gradually expelled as stellar winds at moderate speeds (20-60 Km/s). Models
predict that red giants and AGB stars suffer rapid loss masses involving up
to 0.01 Earth masses per day. As the star suffers new energetic crises, more
complex nucleosynthesis processes are possible and the core temperature increases.
In the later stages the stellar winds increase their intensity. The core temperature
reaches fantastic values (e.g., 250,000 K), to give rise to the final stage
of the AGB star, that has been called superwind. Superwind implies that most
of the remaining materials are blow out and the previously ejected layers
are compressed and swept away. With only available fuel that material contained
in the thin layers surrounding the nucleus, the star is condemned. The final
stages are crossed so fast that only a few examples of stars transiting to
PNs are known. This is the case of FG Sagitta and its surrounding,
incipient nebulae, Henize 1-5.
As commented, the relatively
low temperature in the outer regions of the AGB star makes possible the condensation
of heavy elements in dust, obscuring the star. However, the expansion decreases
gradually the density of the ejected shells. The core still shines because
of a thin layer of material in nucleosynthesis around it. As the inner shell
is gradually depleted, the core contracts and increases its temperature. In
a given moment, the density becomes low enough (1,000-10,000 atoms·cm-3)
to let the ejected materials surrounding the nucleus to be ionized by the
intense UV flow. The external layers began to glow by fluorescence: a star‑like
planetary nebula, relatively dense (106 atoms·cm‑3)
and bright, is born. This is the case of IC 4997 in the picture right.
Ionisation happens when the temperature of the fading shell reaches 25,000
K. At that moment the nebula is too small (a few hundred of light years).
The star exhibits a Wolf-Rayet like spectrum whereas the nebula is still little
ionised.
The ionization sphere
moves outwards as the density of the sphere decreases. In a given moment,
when the shell temperature reaches 60,000K, the whole sphere becomes ionized
and radiation is able to escape into the interstellar medium. Most planetary
nebulae, such as NGC 2342 on the left, showing
disks are within this stage. However, the expansion follows and in time, the
output of the star cannot ionize the diluted gas anymore; the ionized front
shrinks and the outer regions of the nebula become invisible once more. Typically,
the nebula will be visible for about 30,000 years before being extinguished.
The maximal size is about one light year, and gathers about 0.01-1.0 ms
in the nebula (typically 0.3 ms). The episodes of catastrophic
ejections of shells can be repeated, and as a result, multiple concentric
structures surrounding the active one are common in several bright nebulae.
Also, shockwaves can interface consecutive layers, or the quiescent matter
of the interstellar gas, ionizing the interface strongly, and making it to
glow. The variety of shapes that old PN can adopt is truly amazing.
Most of PNs are stellar
or semi-stellar at the telescope, only discernible by their unique spectral
fingerprint: highly ionized gas, with characteristic oxygen emission. Planetary
nebulae usually look visually green owing to the oxygen III lines (496 y 501
nm). More forbidden electronic transitions associated to other intensely ionized
gases, and also recombination lines of hydrogen and helium, are present in
the nebulae spectra. The energy of radiation fades with the distance to the
center of the nebula: inner regions are more intensely ionized. One of these
intensely colored nebulae is NGC 7662, shown in the right.
Note the stratification in colors in the picture, consequence of the stratification
in energy. Usually the inner regions are violet, and the dominant color turns
to blue, green, yellow and finally red as the distance from the center increases.
The outer layers, invisible, can contribute to infrarred emision due to the
termal stress of dust.
Some of these nebulae,
such as NGC 7027 are close and looks very
luminous, but do not forget that the outer layers are dispersing and the star
is fading. Therefore, PNs are transient, short-life structures. They are continuously
being formed and dispersed in the interstellar medium. There are about 1,500
known PNs within the Milky Way. However, light extinction due to dust strongly
biases the discoveries: we can only detect a small fraction. It is thought
to be about 20,000 of these objects visible in a given moment of the Milky
Way evolution. This figure is, however, just an extrapolation from the number
that has been discovered in the Sun neighborhood and depends on the scale
of distances, which is uncertain in a factor of 2 or 3. PNs are far objects
and their particular nature does not allow us to apply standard methods to
estimate distances, such as spectroscopic or trigonometric paralaxes. In this
way, the number of PNs could range 20,000-80,000. This leads to a birth rate
of about one new nebula per year, which fits well with the birth rate of white
dwarfs and constitutes a sign of the deep relation between both kinds of objects.
There are large scale
fluctuations in density that make one planetary nebulae very different from
another. The symmetry is always remarkable, but the diversity of shapes is
amazing. The simpler structure is a spherical shell (NGC 3132 on the left) that once
projected gives rise to a ring structure, more or less intense depending on
the size of the central hollow. However, symmetry can be disrupted by the
influence of a close binary star, or a torus of material that confines the
stellar wind to the polar region. As a result, lobes more or less defined
(bipolar nebulae) are originated (MyCn 18 on the right). Bipolar
structures are also frequent in compact nebulae, not associated to dying stars.
Also regular objects can be confounded with PNs. Not surprisingly, mimetic
PNs (apparent, but not actual PNs) can be found in catalogues. The origin
of mimetic objects can be diverse: mainly symbiotic stars, reflection nebulae,
compact galaxies, dense HII regions, Wolf-Rayet stars, and late spectrum stars
(M to S).
The complexity can also
be increased as a consequence of successive events of ejecting crisis (NGC 6543, on the left), and by
changes in the confining material that may distort the outflows, or the influence
of a close star in binary systems. Also, it should be taken into account the
particular nature of the central stars, which are in rapid evolution and can
suffer paroxysms. Within the same nebula, there are also gradual changes that
become more intricate and irregular with time. The most important effect is
induced by the star radiation pressure that as a snowplow, sweeps the inner
materials in a compression layer that will end to break the shell giving rise
to chaotic structures. Old planetary nebulae are not only larger and fader,
but also more intricate. In large PNs, such as the giant Helix Nebula, radial knotty features
(right) can be detected in high resolution pictures (picture on the right),
resulting from the interaction with the interstellar medium.
If you want to see some observations on
these objects, have a look to the "Observer's logbook" section within
this website. There are a few of them:
|
05
05.6 |
+10
42 |
ORI |
2(4)
12.8m 11"x8" 13.5br |
|
|
06
26.0 |
+17
47 |
GEM |
3b(2) 12.3m
12"x10" 15.3br |
|
|
06 37.4 |
+24 01 |
GEM |
2 13.0m 38"x20"
18.5br |
|
|
07 57.8 |
+53 25 |
LYN |
4 14.0m 400" 16.0br |
|
|
01 42.3 |
+51 35 |
PER |
3(6) 11.0m
163"x107" 17.6br |
|
|
23 45.8 |
+57 04 |
CAS |
3b 12.6m 94" 13.0br |
|
|
17 01.6 |
-21 50 |
OPH |
2a(3) 12.0m
20"x10" 17.0br |
|
|
18 50.0 |
+35 15 |
LYR |
4 13.3m
17.5"x17" |
|
|
19 02.6 |
-00 27 |
AQL |
4 12.0m 9"x7"
14.6br |
|
|
19 14.6 |
-02 42 |
AQL |
3b(2) 14.0m
75"x55" 18.1br |
|
|
18 42.8 |
-03 13 |
AQL |
4 13.5m 40" |
|
|
19 05.9 |
-06 00 |
AQL |
3 12.0m 20" 13.0br |
|
|
20 50.1 |
+13 34 |
DEL |
3b 13.8m
134"x121" 16.1br |
|
|
00 45.6 |
+57 57 |
CAS |
2c 14.1m
33"x29" 19.7br |
|
|
02 45.4 |
+42 33 |
PER |
3b 16.7m 22" 19.3br |
|
|
21 46.1 |
+63 48 |
CEP |
3b 13.5m
86"x70" 18.1br |
M1-1 01 37.3 +50 28 AND
PLNNB 14.3m 6"
VY 2-3 23 23.0 +46 54 AND
PLNNB 2 13.8m 4.6"X4.5"
NGC 7662 23 25.9 +42 32 AND
PLNNB 4(3) 8.6m 17"X14" 14.0br
PK110-12.1 23 39.1 +48 13 AND
PLNNB 4 16.0m 37"X31" 20.0br
He2-105 14 15.5 -74 13 APS
PLNNB 12.0m 35"
He2-131 15 37.2 -71 55 APS PLNNB 11.8m 4.9"
10.8br
Abell 48 18 42.8 -03 13 AQL
PLNNB 4 13.5m 40"
PK31+1.1 18 43.1 -00 17 AQL
PLNNB 1
K3-17 18 56.3 +07 08 AQL
PLNNB 2 14.8m 5.4"
M1-65 18 56.6 +10 52 AQL
PLNNB 2 14.1m 4.2"X3.2"
M1-66
18 58.4 -01 04 AQL PLNNB 1 13.0m <5?"
PK32-3.1 19 00.6 -02 12 AQL
PLNNB 2 6.2"X2.5"
Sh2-71 19 02.0 +02 09 AQL
PLNNB 3b(3) 13.1m 124"X75" 13.8br
NGC 6741 19 02.6 -00 27 AQL
PLNNB 4 12.0m 9"X7" 14.6br
PK47+4.1 19 02.7 +14 28 AQL
PLNNB 2 7.1"
Abell 52 19 04.5 +17 58 AQL
PLNNB 3b 16.5m 37"X34" 17.7br
NGC 6751 19 05.9 -06 00 AQL
PLNNB 3 12.0m 20" 13.0br
Abell 53 19 06.8 +06 24 AQL
PLNNB 4 16.7m 30"X27" 20.2br
Abell 55 19 10.5 -02 21 AQL
PLNNB 3 15.3m 47"X32" 19.8br
PK48+2.1 19 12.1 +15 09 AQL
PLNNB 2 6.2"
K2-10 19 13.0 -03 32 AQL
PLNNB 4 18.7m 24"X20" 21.0br
Abell 56 19 13.1 +02 53 AQL
PLNNB 4 12.3m 188"X174"
PK49+2.1 19 13.1 +15 47 AQL
PLNNB 4(2) 17.0m 16"X6"
M2-47 19 13.6 +04 38 AQL PLNNB 2 13.0m
9.7"X6.9"
He2-429 19 13.6 +14 59 AQL
PLNNB 4 14.3m 4.4"X4.0"
M1-69 19 13.9 +03 38 AQL
PLNNB 1 14.0m <5"
K2-11 19 14.3 +03 35 AQL
PLNNB 3b 13.6m 13.0" 19.3br
NGC 6772 19 14.6 -02 42 AQL
PLNNB 3b(2) 14.0m 75"X55" 18.1br
IC 4846 19 16.5 -09 03 AQL
PLNNB 2 12.0m 2" 13.6br
Abell 58 19 18.3 +01 47 AQL
PLNNB 14.6m 44"X36"
NGC 6778 19 18.4 -01 36 AQL
PLNNB 3(3) 13.3m 19"X13" 14.8br
NGC 6781 19 18.5 +06 32 AQL
PLNNB 3b(3) 11.8m 111"X109" 16.8br
Nassau 2 19 18.7 -11 06 AQL
PLNNB 13.3m 14.0br
M4-14 19 21.0 +07 37 AQL
PLNNB 4(3) 15.0m 8.2"
PK32-8.1 19 21.9 -04 13 AQL
PLNNB 2a
NGC 6790 19 23.0 +01 31 AQL
PLNNB 2 11.3m 2" 16.1br
VY 2-2 19 24.4 +09 54 AQL
PLNNB 1 12.6m 13.6br
M3-34 19 27.1 -06 35 AQL
PLNNB 2 12.3m 6.0"X5.1" 14.6br
Peimbert
9 19 27.8 +10 24 AQL PLNNB 1 14.8m
Peimbert
10 19 28.2 +12 19 AQL PLNNB 14.5m
<10"
NGC 6803 19 31.3 +10 03 AQL
PLNNB 2a 11.0m 4" 14.0br
NGC 6804 19 31.6 +09 14 AQL
PLNNB 4(2) 12.3m 63"X50" 14.1br
Abell 62 19 33.3 +10 37 AQL
PLNNB 2c 13.0m 161"X151" 18.2br
NGC 6807 19 34.6 +05 41 AQL
PLNNB 2 13.8m 2" 13.8br
Merrill 1-1 19 39.1 +15 56 AQL
PLNNB 4 11.8m 3"
M1-73 19 41.2 +14 57 AQL
PLNNB 2 13.6m 5.4"X4.8"
M1-74 19 42.3 +15 09 AQL
PLNNB 1 12.8m 9"
Abell 64 19 45.6 -05 35 AQL
PLNNB 3 15.3m 40"X34" 18.1br
Abell 67 19 58.4 +03 03 AQL
PLNNB 2b 15.3m 69"X61" 19.1br
NGC 6852 20 00.7 +01 44 AQL
PLNNB 4 11.3m 28" 17.8br
Abell 70 20 31.6 -07 05 AQL
PLNNB 4 14.3m 44"X40" 18.6br
NGC 7009 21 04.2 -11 22 AQR
PLNNB 4(6) 8.3m 28"X23" 12.8br
NGC 7293 22 29.6 -20 50 AQR
PLNNB 4(3) 6.3m 960"X720" 13.5br
PK326-10.1 16 44.6 -62 37 ARA
PLNNB <5"
PK325-12.1 16 54.6 -64 14 ARA
PLNNB <10"
He2-186 16 59.6 -51 42 ARA
PLNNB 13.3m 3" 14.5br
PK337-5.1 17 01.7 -50 24 ARA
PLNNB <10"
Peimbert 14 17 06.3 -52 27 ARA
PLNNB 12.6m 8"X6" 14.8br
IC 4642 17 11.8 -55 24 ARA
PLNNB 4 12.3m 15" 13.6br
NGC 6326 17 20.8 -51 45 ARA
PLNNB 3b 12.0m 15"X10" 13.5br
Canon
1-4 17 27.9 -46 56 ARA PLNNB 12.8m
<10"
Peimbert
17 17 35.8 -47 00 ARA PLNNB 14.1m
6"
PK341-29.1 17 36.2 -49 26 ARA
PLNNB <5"
IC 1266 17 45.6 -46 05 ARA
PLNNB 4 12.3m 13" 11.1br
Shapley 3 18 07.4 -51 03 ARA
PLNNB 11.8m 36"
CRL 618 04 42.9 +36 07 AUR
PLNNB 17.7m 12" 17.0br
Abell 8 05 06.6 +39 08 AUR
PLNNB 2b 16.6m 60" 19.6br
K2-1 05 08.1 +30 48 AUR
PLNNB 3 12.0m 132" 18.2br
PK169-0.1 05 19.2 +38 11 AUR
PLNNB 12.0m 32" 16.2br
PK172+0.1 05 29.0 +36 02 AUR
PLNNB 4 40"X34" 20.7br
IC 2149 05 56.4 +46 06 AUR
PLNNB 3b(2) 1 12"X6" 11.3br
PK173+3.1 06 02.6 +36 08 AUR
PLNNB 20"
NGC 2242 06 34.1 +44 47 AUR
PLNNB 2 14.5m 22" 17.6br
NGC 1501 04 07.0 +60 55 CAM
PLNNB 3 12.0m 56"X48" 14.3br
M2-2 04 13.3 +56 57 CAM
PLNNB 3 13.6m 12"X11"
M4-18 04 25.8 +60 07 CAM
PLNNB 15.8m <10"
IC 3568 12 33.1 +82 34 CAM
PLNNB 2(2a) 11.6m 18" 12.8br
He2-5 07 47.4 -51 16 CAR
PLNNB 12.3m <10"
IC 2448 09 07.1 -69 57 CAR
PLNNB 2b 11.5m 8" 14.1br
PK278-6.1 09 19.6 -59 12 CAR
PLNNB <10"
NGC 2867 09 21.4 -58 19 CAR
PLNNB 4 9.6m 12.0" 16.0br
He2-32 09 30.9 -57 36 CAR
PLNNB 12.3m 40"
IC 2501 09 38.8 -60 06 CAR
PLNNB 1 11.3m 2" 14.5br
He2-36 09 43.5 -57 17 CAR
PLNNB 10.3m <25" 11.5br
He2-39 10 03.9 -60 45 CAR
PLNNB 12.8m 10"
PK286-6.1 10 07.4 -63 55 CAR
PLNNB <10"
IC 2553 10 09.3 -62 37 CAR
PLNNB 13.0m 4" 15.5br
Hoffleit 4 10 15.6 -58 51 CAR
PLNNB 4 11.8m 30"
NGC 3211 10 17.8 -62 40 CAR
PLNNB 2b 11.8m 12" 17.2br
PK285-2.1 10 23.2 -60 33 CAR
PLNNB <5"
He2-51 10 35.8 -64 19 CAR
PLNNB 2a 14.1m 12"X7"
Perek 1-3 10 44.5 -61 40 CAR
PLNNB 14.6m 9"X8"
PK288-0.1 10 54.0 -60 27 CAR
PLNNB 72" 10.5br
Hoffleit 38 10 54.6 -59 10 CAR
PLNNB 4 12.3m 30"
PK289-1.1 10 56.0 -61 27 CAR
PLNNB <25"
IC 2621 11 00.3 -65 15 CAR
PLNNB 1 10.5m 5" 15.3br
Hoffleit
48 11 03.9 -60 36 CAR PLNNB 3 12.6m
20"
PK295-9.1 11 17.8 -70 48 CAR PLNNB <10"
VY
1-1 00 18.7 +53 53 CAS PLNNB
12.5m 5"
BV
5-1 00 19.9 +62 59 CAS PLNNB
14.6m
Hu
1-1 00 28.2 +55 57 CAS PLNNB 2
13.3m 5" 16.5br
PK121+0.1 00 40.3 +62 52 CAS PLNNB 15.3m
Abell
2 00 45.6 +57 57 CAS PLNNB 2c
14.1m 33"X29" 19.7br
BV 3 01 53.7 +56 25 CAS PLNNB 14.1m
30" 18.0br
IC
1747 01 57.6 +63 19 CAS PLNNB 3b
12.0m 13" 15.8br
Abell
3 02 12.2 +64 09 CAS PLNNB 3b
18.2m 60" 18.1br
Abell
6 02 58.9 +64 30 CAS PLNNB 2b
14.3m 188"X174" 18.2br
IC
289 03 10.3 +61 19 CAS PLNNB
4(2) 12.0m 45"X30" 16.7br
Hubble
12 23 26.9 +58 11 CAS PLNNB 14.0m
3"
Abell
82 23 45.8 +57 04 CAS PLNNB 3b
12.6m 94" 13.0br
Abell
83 23 46.8 +54 45 CAS PLNNB 2c
17.6m 54" 21.0br
Abell 84 23 47.7 +51 24 CAS
PLNNB 3b 14.3m 147"X114" 18.5br
He2-63 11 23.9 -52 52 CEN
PLNNB 14.6m <10"
He2-64 11 27.4 -57 18 CEN
PLNNB 14.1m 9"
NGC 3699 11 28.0 -59 57 CEN
PLNNB 14.0m 67"
Fleming 1 11 28.6 -52 56 CEN
PLNNB 3(4) 11.3m 30"
He2-67 11 28.8 -60 07 CEN
PLNNB 13.8m <5"
PB 8 11 33.4 -57 06 CEN
PLNNB 12.8m 5"
He2-70 11 35.2 -60 17 CEN
PLNNB 12.0m 45"X27"
He2-72 11 41.7 -62 29 CEN
PLNNB 14.6m 65"
He2-73 11 48.6 -65 08 CEN PLNNB 12.8m <5"
NGC 3918 11 50.3 -57 11 CEN
PLNNB 2b 8.3m 12" 15.5br
PK304+5.1 13 05.7 -57 39 CEN
PLNNB <10"
He2-90 13 09.6 -61 20 CEN
PLNNB 13.6m <10"
PK305-0.1 13 10.1 -63 11 CEN
PLNNB <5"
The 2-A 13 22.5 -63 21 CEN PLNNB 13.3m 25"
17.1br
He2-96 13 42.6 -61 23 CEN
PLNNB 14.3m <10"
NGC 5307 13 51.1 -51 12 CEN
PLNNB 3 12.1m 15"X10" 14.6br
He2-102 13 58.2 -58 55 CEN
PLNNB 14.1m 9"
NGC 5408 14 03.4 -41 23 CEN
PLNNB V 12.1m 114"X60"
He2-108 14 18.2 -52 11 CEN
PLNNB 10.1m 12"
He2-107 14 18.7 -63 07 CEN
PLNNB 16.0m 11"
He2-109 14 20.8 -55 28 CEN
PLNNB 13.6m 9"X6"
He2-111 14 33.3 -60 50 CEN
PLNNB 13.0m 30"
Abell 86 00 01.6 +70 43 CEP
PLNNB 2c 16.7m 70" 20.0br
Abell 1 00 12.6 +69 11 CEP
PLNNB 2b 18.2m 47" 19.8br
NGC 40 00 13.0 +72 31 CEP
PLNNB 3b(3) 10.6m 60"X40" 11.5br
Abell 73 20 56.5 +57 26 CEP
PLNNB 4 16.5m 80"X67" 20.5br
Abell 75 21 26.4 +62 53 CEP
PLNNB 3b 13.1m 67"X47" 17.2br
K3-60 21 27.5 +57 39 CEP
PLNNB 15.0m 10"
Abell 77 21 32.2 +55 53 CEP
PLNNB 3a(3) 15.1m 67"X50" 16.2br
PK98+2.1 21 39.2 +55 46 CEP PLNNB 2 15.8m
8.4"X5.7"
NGC
7139 21 46.1 +63 48 CEP PLNNB 3b
13.5m 86"X70" 18.1br
M2-51 22 16.1 +57 29 CEP PLNNB 2(3)
47"X38"
PK104+0.1 22 20.3 +58 14 CEP PLNNB 17.0m
M2-52 22 20.5 +57 36 CEP PLNNB 3 15.0m
13"X12"
NGC
7354 22 40.3 +61 17 CEP PLNNB
4(3b) 12.8m 22"X18" 16.5br
IC
1454 22 42.4 +80 27 CEP PLNNB 4
14.8m 34" 16.3br
M1-80 22 56.3 +57 09 CEP PLNNB 2 14.1m
8"
M2-55 23 31.9 +70 23 CEP PLNNB 3 12.1m
42"X36" 21.0br
PK114+3.1 23 35.5 +64 53 CEP PLNNB 3
PK118+8.1 23 56.6 +70 49 CEP PLNNB 1 21.0br
NGC
246 00 47.1 -11 52 CET PLNNB 3b
8.5m 240"X210" 10.8br
NGC 3195 10 09.4 -80 52 CHA
PLNNB 3 11.5m 40"X30" 17.7br
NGC 5315 13 54.0 -66 31 CIR
PLNNB 2 13.0m 5' 11.3br
He2-103 14 05.5 -64 41 CIR
PLNNB 13.8m 20"
He2-114 15 04.1 -60 53 CIR
PLNNB 11.1m 30"X24"
He2-116 15 06.0 -61 22 CIR
PLNNB 10.6m 45"
He2-120 15 12.0 -55 40 CIR
PLNNB 14.1m 30"
PK322-0.1 15 23.7 -57 09 CIR
PLNNB <10"
IC 2165 06 21.7 -12 59 CMA
PLNNB 3b 12.5m 9"X7" 15.1br
Abell 15 06 27.0 -25 23 CMA
PLNNB 4 16.2m 34" 15.3br
PB 1 07 02.7 -13 44 CMA
PLNNB 13.3m
M3-1 07 02.8 -31 35 CMA PLNNB ?(6) 12.1m 14"X9" 14.1br
K2-3 07 06.9 -22 02 CMA PLNNB 3 14.5m 65"
21.0br
M1-11 07 11.3 -19 51 CMA PLNNB 1 15.5m
PK229-2.1 07 12.5 -16 08 CMA
PLNNB 3b 86"X45" 21.0br
M3-2 07 14.8 -27 50 CMA PLNNB 3b 14.6m
9.8"X6.0"
M1-12 07 19.4 -21 38 CMA PLNNB 15.3m
M1-13 07 21.2 -18 08 CMA PLNNB 12.6m
10"
Abell 20 07 23.0 +01 46 CMI
PLNNB 2c 14.1m 67" 16.6br
Abell 22 07 36.1 +02 42 CMI
PLNNB 3 15.3m 261" 19.6br
Abell 24 07 51.7 +03 00 CMI
PLNNB 4(3) 13.6m 265"X180" 17.2br
Abell 30 08 46.8 +17 53 CNC
PLNNB 2c 15.6m 127" 14.3br
Abell 31 08 54.2 +08 55 CNC
PLNNB 3a 12.1m 16.8'X15.6' 15.5br
H4-1 12 59.4 +27 38 COM
PLNNB 16.0m
Fleming 3 18 00.2 -38 50 CRA
PLNNB 1 11.3m 2"
PK354-7.1 18 04.9 -37 38 CRA
PLNNB 2 14.5m 12.8"X11"
Longmore 17 18 27.8 -37 16 CRA
PLNNB 15.0m 104" 16.0br
IC 1297 19 17.4 -39 37 CRA
PLNNB 11.5m 8"X6" 12.8br
He2-76 12 08.4 -64 12 CRU
PLNNB 12.3m 16"
He2-78 12 09.2 -58 43 CRU
PLNNB 17.6m <5"
PK299-1.1 12 23.0 -64 02 CRU PLNNB 13.6m
7"X6"
PK299+2.1 12 23.8 -60 14 CRU
PLNNB 12.6m 30"
He2-83 12 28.7 -62 06 CRU
PLNNB 12.8m 6"X5"
He2-84 12 28.8 -63 44 CRU
PLNNB 11.6m 34"X23"
He2-85 12 30.2 -63 53 CRU
PLNNB 13.8m <10"
He2-86 12 30.4 -64 52 CRU
PLNNB 14.1m <5"
NGC 4361 12 24.5 -18 47 CRV
PLNNB 3a(2) 10.8m 80" 13.1br
Abell 61 19 19.2 +46 15 CYG
PLNNB 2b 13.0m 200" 17.3br
BD+30 3639 19 34.8 +30 31 CYG
PLNNB 4 9.6m 5" 10.0br
NGC 6826 19 44.8 +50 32 CYG
PLNNB 3a(2) 8.8m 27"X24" 10.6br
NGC 6833 19 49.8 +48 58 CYG
PLNNB 2 13.8m 2" 15.1br
K3-46 19 50.0 +33 46 CYG
PLNNB 3b(6) 14.3m 32"X16"
PC 23 19 51.9 +33 00 CYG
PLNNB 1 14.6m <10"
PK75+5.1 19 57.1 +39 50 CYG
PLNNB 10.5br
He1-4 19 59.3 +31 55 CYG
PLNNB 3b 13.3m 22"
K3-73 20 03.9 +49 19 CYG
PLNNB 15.6m 17"X15"
PK75+4.1 20 04.4 +39 35 CYG
PLNNB 3b 17.6m 30"X27"
M1-75 20 04.8 +31 28 CYG
PLNNB 3b(6) 16.0m 16"X11" 21.0br
PK79+6.1 20 06.9 +44 15 CYG PLNNB 2 3.9"
M4-17 20 09.0 +43 44 CYG
PLNNB 4(2) 12.3m 23"X21"
NGC 6884 20 10.4 +46 28 CYG
PLNNB 2b 12.6m 5.6"X5.0" 16.7br
NGC 6881 20 10.9 +37 25 CYG
PLNNB 2a(3) 14.3m 3.3"X2.9" 15.0br
NGC 6894 20 16.4 +30 34 CYG
PLNNB 4(2) 14.3m 44"X39" 18.2br
Abell 69 20 19.9 +38 24 CYG
PLNNB 4 16.5m 23"X20" 21.0br
M3-35 20 21.1 +32 29 CYG
PLNNB 1 14.5m 1.5" 15.1br
K3-58 20 21.9 +30 00 CYG
PLNNB ?(3) 14.6m 9.5"X6.5"
Abell 71 20 32.4 +47 21 CYG PLNNB 3b 15.1m
168"X147" 18.8br
NGC 7008 21 00.5 +54 33 CYG
PLNNB 3 12.0m 86"X69" 13.8br
IV Zw 67 21 02.3 +36 42 CYG
PLNNB 13.5m 27"X18" 12.3br
NGC 7026 21 06.3 +47 51 CYG
PLNNB 3a 12.0m 25"X9" 14.0br
NGC 7027 21 07.0 +42 14 CYG
PLNNB 3a 9.6m 18"X11" 16.0br
Sh1-89 21 14.0 +47 45 CYG
PLNNB 3a 14.8m 44"X29" 19.1br
NGC 7048 21 14.3 +46 17 CYG
PLNNB 3b 11.0m 60"X50" 18.0br
M1-77 21 19.1 +46 19 CYG
PLNNB 2a 18.0m 7" 12.1br
K3-81 21 22.3 +38 07 CYG PLNNB 15.6m
11"
PK96+2.1 21 30.0 +54 27 CYG
PLNNB 2 6.1"
K3-82 21 31.1 +50 00 CYG
PLNNB 14.8m 19" 19.5br
PK95+0.1 21 32.0 +52 34 CYG
PLNNB 15.8m 2.5"
IC 5117 21 32.5 +44 36 CYG
PLNNB 2 13.3m 2" 16.7br
Hu 1-2 21 33.1 +39 38 CYG
PLNNB 2 12.6m 10"X7" 13.3br
Abell 78 21 35.5 +31 42 CYG
PLNNB 4 14.3m 113"X88" 13.3br
M1-79 21 37.0 +48 56 CYG
PLNNB 4 13.1m 38"X27" 14.3br
K3-84 21 38.8 +46 00 CYG
PLNNB 15.1m 10"X8"
PK95-2.1 21 43.3 +50 25 CYG
PLNNB 1
M2-50 21 57.7 +51 42 CYG
PLNNB 2 14.6m 4.5"X3.4"
NGC 6891 20 15.1 +12 42 DEL PLNNB 2a(2b) 10.5m 15.5"X7" 12.3br
NGC 6905 20 22.4 +20 06 DEL PLNNB 3(3) 12.0m
44"X38" 14.0br
PK63-12.1 20 36.1 +20 10 DEL PLNNB <10"
Abell 72 20 50.1 +13 34 DEL PLNNB 3b 13.8m
134"X121" 16.1br
NGC
6543 17 58.6 +66 38 DRA PLNNB 3a(2) 8.3m 22"X16" 11.3br
K1-16 18 21.9 +64 22 DRA PLNNB 3 14.1m
130"X100" 14.8br
NGC
6742 18 59.3 +48 28 DRA PLNNB 13.3m
31"X30" 19.3br
K1-6 20 04.5 +74 27 DRA PLNNB 2 14.5m
240"X192"
NGC
1535 04 14.3 -12 44 ERI PLNNB
4(2c) 10.3m 20"X17" 12.1br
NGC 1360 03 33.2 -25 52 FOR
PLNNB 3 9.3m 360"X270" 11.3br
J 900 06 26.0 +17 47 GEM PLNNB 3b(2) 12.3m
12"X10" 15.3br
M1-7 06 37.4 +24 01 GEM
PLNNB 2 13.0m 38"X20" 18.5br
Abell 19 06 59.9 +14 37 GEM
PLNNB 2b 17.0m 67"
NGC 2371 07 25.6 +29 29 GEM
PLNNB 3a+6 13.0m 74"X54" 14.8br
NGC 2372 07 25.6 +29 30 GEM PLNNB 3a(4) 13.0m
74"X54" 14.8br
Abell 21 07 29.0 +13 15 GEM
PLNNB 14.1m 10'X6' 15.8br
NGC 2392 07 29.2 +20 55 GEM
PLNNB 3b(3b) 8.6m 47"X43" 10.6br
IC 5148 21 59.6 -39 23 GRU
PLNNB 4 11.0m 120" 16.2br
NGC 6058 16 04.4 +40 41 HER
PLNNB 3(2) 13.0m 25"X20" 13.8br
IC 4593 16 11.7 +12 04 HER
PLNNB 2(2) 11.0m 12.5"X10" 11.1br
Abell 39 16 27.5 +27 54 HER
PLNNB 2c 12.8m 174" 15.8br
NGC 6210 16 44.5 +23 48 HER
PLNNB 2(3b) 9.6m 20"X13" 12.5br
Sanduleak 4-1 17 13.8 +49 16 HER
PLNNB 14.5m 15" 12.0br
K1-14 17 42.5 +21 27 HER
PLNNB 4 15.1m 47" 16.3br
K1-15 17 45.0 +27 19 HER
PLNNB 3b 15.0m 43" 19.7br
VY 1-2 17 54.4 +28 00 HER
PLNNB 2 12.0m 5.2"X4.1" 17.6br
M3-27 18 27.8 +14 29 HER
PLNNB 1 13.8m
Hu 2-1 18 49.8 +20 50 HER
PLNNB 11.6m 3" 13.3br
PK52+7.1 18 59.1 +20 37 HER
PLNNB 14.8m 4"
NGC 2610 08 33.4 -16 09 HYA
PLNNB 4(2) 13.0m 50"X47" 15.8br
Abell 33 09 39.1 -02 48 HYA
PLNNB 2b 13.3m 268" 16.1br
Abell 34 09 45.6 -13 10 HYA
PLNNB 2b 12.8m 281"X268" 16.2br
NGC 3242 10 24.8 -18 39 HYA
PLNNB 4(3b) 8.6m 40"X35" 12.3br
K1-22 11 26.7 -34 22 HYA
PLNNB 12.1m 188"X174" 16.8br
Abell 35 12 53.6 -22 52 HYA
PLNNB 3a 12.0m 938"X636"
IC 5217 22 23.9 +50 58 LAC
PLNNB 2 12.6m 7.5"X6" 14.6br
Abell 79 22 26.3 +54 49 LAC
PLNNB 4(3) 15.8m 59"X49" 18.3br
Merrill 2-2 22 31.7 +47 48 LAC
PLNNB 1 11.8m
M2-53 22 32.3 +56 10 LAC
PLNNB 3b 14.8m 14.3"
Abell 80 22 34.7 +52 27 LAC
PLNNB 4 15.1m 161"X114" 19.7br
PK221+45.1 09 48.0 +13 17 LEO
PLNNB 5"
Abell 7 05 03.2 -15 36 LEP
PLNNB 3a 13.1m 871"X670" 15.3br
IC 418 05 27.5 -12 42 LEP
PLNNB 4 10.6m 14"X11" 10.1br
Merrill 2-1 15 22.3 -23 38 LIB
PLNNB 2 11.6m 7" 18.3br
IC
4406 14 22.4 -44 09 LUP PLNNB
4(3) 11.0m 100"X37" 17.3br
He2-112 14 40.5 -52 35 LUP
PLNNB 14.6m 8"
He2-117 15 06.0 -56 00 LUP
PLNNB <5"
He2-118 15 06.2 -43 01 LUP
PLNNB 12.6m <5"
NGC 5873 15 12.8 -38 08 LUP
PLNNB 2 12.0m 3" 15.5br
NGC 5882 15 16.8 -45 39 LUP
PLNNB 10.5m 7" 13.3br
PK324+2.1 15 23.6 -53 52 LUP PLNNB <25"
PK325+4.2 15 24.8 -51 50 LUP PLNNB <5"
He2-128 15 25.1 -51 20 LUP
PLNNB 14.3m <5"
He2-129 15 25.6 -52 51 LUP
PLNNB 14.8m <10"
NGC
6026 16 01.4 -34 33 LUP PLNNB 4
12.5m 54"X36" 13.3br
Longmore
11 16 03.4 -36 01 LUP PLNNB 16.0m
67"X50" 19.0br
PK358-9.1 17 56.6 -43 05 LUP PLNNB <5"
Abell 16 06 43.9 +61 47 LYN
PLNNB 2b 15.8m 141" 17.7br
PK164+31.1 07 57.8 +53 25 LYN
PLNNB 4 14.0m 400" 16.0br
Abell 46 18 31.3 +26 56 LYR
PLNNB 3b(2) 15.6m 67"X60" 15.1br
K2-6 18 41.1 +26 55 LYR
PLNNB 4 14.1m 30"X24" 21.0br
M1-64 18 50.0 +35 15 LYR
PLNNB 4 13.3m 17.5"X17"
M 57 18 53.6 +33 02 LYR
PLNNB 4(3) 9.3m 86"X62" 15.8br
NGC 6765 19 11.1 +30 33 LYR
PLNNB 5 12.8m 38" 16.0br
K3-27 19 14.5 +28 41 LYR PLNNB 14.3m
16.4" 16.1br
PK211-3.1 06 35.8 +00 05 MON PLNNB <5"
Abell
17 06 48.6 -09 32 MON PLNNB 2c
14.8m 54"X34" 19.8br
K2-2 06 52.6 +09 58 MON PLNNB 3 15.0m
414" 18.2br
M1-8 06 53.5 +03 12 MON PLNNB 14.5m
22"X15"
Abell
18 06 56.2 -02 53 MON PLNNB 2b
17.5m 80"X67"
M1-9 07 05.3 +02 47 MON PLNNB 1 13.5m
2"
NGC
2346 07 09.4 -00 48 MON PLNNB 3b(6) 12.5m 60"X50" 11.1br
M3-3 07 26.6 -05 22 MON PLNNB 4 14.8m
15"X10"
M1-16 07 37.3 -09 39 MON PLNNB ?(4) 13.8m 3"
Abell
25 08 06.7 -02 52 MON PLNNB 3b
15.3m 188"X147" 18.8br
PK294-4.1 11 31.7 -65 59 MUS
PLNNB <10"
He2-71 11 39.2 -68 52 MUS
PLNNB 14.8m <5"
NGC 4071 12 04.3 -67 19 MUS
PLNNB 12.8m 75" 19.2br
IC 4191 13 08.8 -67 39 MUS
PLNNB 2 12.0m 18"X11" 16.3br
NGC 5189 13 33.5 -65 58 MUS
PLNNB 5 10.3m 140" 14.5br
PK307-4.1 13 39.5 -67 23 MUS
PLNNB 12.8m 16"X10"
He2-97 13 45.4 -71 29 MUS
PLNNB 12.6m <5"
He2-99 13 52.4 -66 23 MUS
PLNNB 16.1m 25"
He2-123 15 22.3 -54 09 NOR
PLNNB 15.1m <25"
Menzel 1 15 34.2 -59 09 NOR
PLNNB 4(6) 12.5m 50"
He2-132 15 38.0 -58 45 NOR
PLNNB 14.6m <25"
He2-133 15 41.9 -56 37 NOR
PLNNB 16.2m 4"
Canon 1-1 15 51.3 -48 45 NOR
PLNNB 1 12.8m
Shapley 1 15 51.7 -51 31 NOR
PLNNB 4 13.6m 76.0" 13.8br
He2-140 15 58.1 -55 42 NOR
PLNNB 17.1m <5"
He2-141 15 59.1 -58 24 NOR
PLNNB 12.3m 16"X12" 13.6br
He2-142 16 00.0 -55 56 NOR PLNNB 15.8m <5"
He2-143 16 01.1 -55 06 NOR
PLNNB 15.3m 7"X4"
He2-145 16 09.0 -51 02 NOR
PLNNB <25"
He2-146 16 10.7 -54 57 NOR
PLNNB 14.1m 24"X20"
PK329-2.1 16 14.2 -54 48 NOR
PLNNB <5"
Menzel 2 16 14.5 -54 57 NOR PLNNB 4(3) 11.8m
25"X21"
He2-152 16 15.3 -49 14 NOR
PLNNB 13.6m 13"X10"
PK326-6.1 16 15.7 -59 54 NOR
PLNNB <5"
Menzel 3 16 17.2 -51 59 NOR
PLNNB 6 13.8m 35"X16" 14.1br
He2-153 16 17.2 -53 32 NOR
PLNNB 14.1m 14"X12"
PK331-2.1 16 22.2 -53 41 NOR
PLNNB <5"
PK327-6.1 16 23.5 -58 19 NOR
PLNNB <5"
Perek 1-6 16 23.9 -46 42 NOR
PLNNB 2 16.1m 14"X11"
He2-159 16 24.3 -54 36 NOR
PLNNB 13.8m 16"X8"
PK331-2.2 16 24.6 -53 23 NOR
PLNNB 13.6m <25"
PK331-3.1 16 27.9 -54 02 NOR
PLNNB <5"
He2-163 16 29.6 -59 09 NOR
PLNNB 13.8m 22"X18"
He2-164 16 29.9 -53 23 NOR
PLNNB 13.6m 16"
He2-165 16 30.0 -54 10 NOR
PLNNB 13.6m 54"X45"
PK337+1.1 16 30.5 -46 03 NOR
PLNNB <5"
NGC 6164 16 33.7 -48 05 NOR
PLNNB 3b 370" 6.8br
NGC 6165 16 34.1 -48 09 NOR
PLNNB 3b 370" 6.8br
He2-169 16 34.3 -49 21 NOR
PLNNB 17.2m <25"
PK332-4.1 16 35.4 -53 50 NOR
PLNNB <5"
PK331-5.1 16 38.0 -55 45 NOR
PLNNB <5"
PC 12 16 43.8 -18 57 OPH
PLNNB 1 13.3m 5.2"X4.2" 14.6br
Abell 40 16 48.6 -21 01 OPH
PLNNB 2b 16.7m 34" 19.2br
IC 4634 17 01.6 -21 50 OPH
PLNNB 2a(3) 12.0m 20"X10" 17.0br
M2-9 17 05.7 -10 09 OPH
PLNNB ?(6) 14.6m 39"X15" 14.5br
M4-3 17 10.7 -27 09 OPH
PLNNB 12.8m <10"
M3-36 17 12.6 -25 44 OPH
PLNNB 2 15.0m 4.7"X3.7"
Nassau 1 17 12.9 -03 16 OPH
PLNNB 13.3m 16.7br
NGC 6309 17 14.1 -12 55 OPH
PLNNB 3b(6) 11.6m 20"X10" 16.2br
PK356+5.1 17 17.3 -28 59 OPH
PLNNB 13.5m
M3-37 17 19.2 -25 17 OPH
PLNNB 2a 17.7m 11"X10"
M2-11 17 20.6 -29 01 OPH
PLNNB 1 13.3m 11"
M3-38 17 21.1 -29 03 OPH
PLNNB <25"
M3-39 17 21.2 -27 12 OPH
PLNNB 3(2) 17.2m 16"X11"
Haro 1-11 17 21.3 -22 19 OPH
PLNNB 2 14.6m 4.4"
PK358+5.2 17 22.4 -27 09 OPH
PLNNB <10"
Haro 2-7 17 23.4 -28 59 OPH
PLNNB 2 19.2m 3" 20.0br
PK359+5.1 17 24.0 -26 00 OPH
PLNNB 1 <5"
M3-7 17 24.6 -29 24 OPH
PLNNB 2 15.1m 7"X6" 18.0br
PK3+7.1 17 24.8 -21 34 OPH
PLNNB 2 4.3" 21.0br
M3-8 17 24.9 -28 06 OPH
PLNNB 2 14.0m 5.6"X5.4"
PK356+3.1 17 25.1 -29 46 OPH
PLNNB 13.6m
M3-9 17 25.7 -26 12 OPH
PLNNB 3 15.0m 18"X16" 18.0br
PK359+4.1 17 25.7 -26 58 OPH
PLNNB 13.3m
PK357+3.2 17 26.0 -29 22 OPH
PLNNB 2 4.3"
PK357+3.4 17 27.0 -29 16 OPH
PLNNB 2 7.8"X3.6"
Haro 1-14 17 28.1 -24 25 OPH
PLNNB 2 16.0m 6.9"X6.5"
Haro 1-15 17 28.6 -24 51 OPH PLNNB 2 15.0m
6.2"X4.5"
M3-10 17 28.7 -28 27 OPH
PLNNB 2 13.6m 3.5"X3.0"
M1-20 17 29.0 -19 16 OPH
PLNNB 1 14.0m <10"
NGC 6369 17 29.3 -23 46 OPH
PLNNB 4(2) 11.0m 30"X29" 15.1br
PK0+4.1 17 29.4 -25 49 OPH
PLNNB 1 21.0br
PK0+4.2 17 29.4 -26 26 OPH
PLNNB 1 <5"
PK358+3.7 17 29.7 -28 40 OPH
PLNNB 1 <5"
Haro 1-18 17 29.7 -29 33 OPH
PLNNB 1 <25"
PK358+3.4 17 30.0 -27 59 OPH
PLNNB 1 <25"
PK358+2.2 17 30.4 -29 10 OPH
PLNNB 14.0m
Haro 2-12 17 30.6 -21 28 OPH PLNNB 3 5.4"
Haro 1-20 17 30.7 -28 04 OPH PLNNB 2 14.8m
4.5"X3.6"
PK359+3.2 17 30.8 -27 06 OPH
PLNNB 13.6m <10"
PK359+3.1 17 30.9 -26 59 OPH
PLNNB 13.8m
The 3-26 17 31.2 -28 15 OPH
PLNNB 13.6m <25"
Abell 42 17 31.5 -08 19 OPH
PLNNB 2b 14.6m 60"X57" 19.7br
PK357+1.1 17 32.8 -30 00 OPH
PLNNB 2 2.8"
Haro 1-24 17 33.6 -21 46 OPH
PLNNB 2 15.0m 8.5"
Haro 2-15 17 34.4 -22 53 OPH PLNNB 2 15.0m
5"X4"
He2-250 17 34.9 -26 36 OPH
PLNNB 2 14.1m 5.8"
M1-22 17 35.2 -18 34 OPH
PLNNB 4 14.0m 9.3"X8.7" 21.0br
PK358+1.1 17 35.2 -29 03 OPH
PLNNB 1 21.0br
M3-11 17 35.4 -20 57 OPH
PLNNB 2 14.0m 12"
PK359+2.3 17 35.8 -27 43 OPH
PLNNB 13.8m
PK2+4.1 17 36.0 -24 26 OPH
PLNNB 13.1m
M3-12 17 36.4 -21 31 OPH
PLNNB 2 14.8m 6.7"X5.4"
M1-23 17 37.4 -18 47 OPH
PLNNB 2 14.5m 8.4"X6.0"
PK358+3.2 17 37.6 -28 32 OPH
PLNNB 1 <5"
M1-24 17 38.2 -19 38 OPH
PLNNB 2 13.8m 7.1"X5.8"
M1-25 17 38.5 -22 09 OPH
PLNNB 2 13.3m 4.7"X4.6"
PK359+1.1 17 38.7 -28 43 OPH
PLNNB 14.0m
He2-260 17 38.9 -18 18 OPH
PLNNB 11.0m <10"
Haro 2-16 17 39.9 -21 14 OPH
PLNNB 3 16"X10"
PK3+3.1 17 40.1 -24 26 OPH
PLNNB 2 14.0m 3.5" 21.0br
He2-262 17 40.2 -26 45 OPH
PLNNB 15.0m <10"
Haro 1-27 17 40.3 -22 19 OPH
PLNNB 2 15.5m 6.7"X4.1"
K1-4 17 40.5 -27 01 OPH
PLNNB 3 15.5m 47"X33" 19.7br
PK5+4.2 17 41.6 -22 14 OPH
PLNNB 1 <7"
PK3+3.2 17 41.9 -24 11 OPH
PLNNB 1 <14"
Hubble 4 17 41.9 -24 42 OPH
PLNNB 3b 13.0m 6.6"X5.8" 14.8br
The 4-2 17 46.2 -18 40 OPH
PLNNB 13.0m 20"
PK7+4.1 17 46.3 -20 13 OPH
PLNNB 14.6m <10"
PK24-2.1 17 46.5 -08 28 OPH
PLNNB 3 5.7"X3.3"
Abell 43 17 53.6 +10 37 OPH
PLNNB 2c 14.6m 80"X74" 14.6br
NGC 6572 18 12.1 +06 51 OPH
PLNNB 2a 8.0m 15"X12" 12.0br
Canon 3-1 18 17.6 +10 09 OPH
PLNNB 2 13.5m 7.0"X5.5" 13.0br
J 320 05 05.6 +10 42 ORI PLNNB 2(4) 12.8m
11"X8" 13.5br
Abell
10 05 31.8 +06 56 ORI PLNNB 3
12.6m 34" 19.5br
NGC
2022 05 42.1 +09 05 ORI PLNNB 4(2)
12.8m 28"X27" 15.8br
Abell
12 06 02.4 +09 39 ORI PLNNB 13.8m
37" 19.1br
Abell
13 06 04.8 +03 57 ORI PLNNB 4
15.3m 174"X134" 18.7br
Abell
14 06 11.2 +11 46 ORI PLNNB 2c
14.0m 40"X27" 15.1br
Sh2-271 06 15.2 +12 22 ORI PLNNB 3b 130"
14.0br
Hart-Triton
6 17 51.8 -60 23 PAV PLNNB 15.0m
42"X30" 18.0br
PK337-18.1 18 18.2 -57 12 PAV PLNNB <10"
IC
4723 18 35.9 -63 23 PAV PLNNB
Spec 15.0m 19" 16.2br
He2-434 19 33.8 -74 33 PAV
PLNNB 12.1m 8"X6"
NGC 7094 21 36.9 +12 47 PEG
PLNNB 4 13.3m 99"X91" 13.6br
Jones 1 23 35.9 +30 28 PEG PLNNB 3b 12.6m 314"
16.2br
M 76 01 42.3 +51 35 PER
PLNNB 3(6) 11.0m 163"X107" 17.6br
M 76 01 42.3 +51 35 PER
PLNNB 3(6) 11.0m 163"X107" 17.6br
M1-2 01 58.8 +52 54 PER
PLNNB 1 <0.5" 13.1br
Abell 4 02 45.4 +42 33 PER
PLNNB 3b 16.7m 22" 19.3br
Abell 5 02 52.3 +50 36 PER
PLNNB 4 16.0m 134"X121" 20.2br
M1-4 03 41.7 +52 17 PER
PLNNB 13.6m 4" 15.8br
IC 351 03 47.6 +35 03 PER
PLNNB 2a 12.3m 8"X6" 15.0br
IC 2003 03 56.4 +33 53 PER
PLNNB 2 12.6m 7" 15.3br
M4-2 07 28.9 -35 45 PUP
PLNNB 2 13.0m 8"
M1-15 07 31.8 -19 27 PUP
PLNNB 14.0m 1"
M1-17 07 40.4 -11 33 PUP
PLNNB 13.5m 3"
NGC 2438 07 41.8 -14 44 PUP
PLNNB 4(2) 11.0m 65" 17.5br
NGC 2440 07 41.9 -18 13 PUP
PLNNB 5(3) 11.5m 54"X20" 17.5br
M1-18 07 42.1 -14 21 PUP
PLNNB 2b 14.3m 33"X28" 19.1br
Abell 23 07 43.3 -34 45 PUP
PLNNB 13.1m 54"
NGC 2452 07 47.4 -27 20 PUP
PLNNB 4(3) 12.6m 22"X16" 17.5br
K1-12 07 50.2 -19 18 PUP
PLNNB 2 15.3m 38"X36" 21.0br
M3-4 07 55.2 -23 38 PUP
PLNNB 4 14.0m 14"X13.5"
M3-5 08 02.5 -27 42 PUP
PLNNB 4 14.1m 7.1"X6.5"
PK250+0.1 08 09.0 -32 40 PUP
PLNNB 2 18.1m 40"
He2-9 08 28.5 -39 24 PUP
PLNNB 14.3m 5"
Abell 27 08 31.8 -32 05 PYX
PLNNB 3b 15.6m 47"X40" 21.0br
Abell 29 08 40.2 -20 54 PYX
PLNNB 4 14.3m 482"X335" 18.3br
M3-6 08 40.7 -32 23 PYX
PLNNB 2a 11.0m 11"X6"
K1-2 08 57.8 -28 57 PYX
PLNNB 2 15.3m 63"X54" 16.7br
NGC 2818A 09 16.0 -36 36 PYX
PLNNB 3b 11.8m 36"X36" 16.1br
Longmore 13 16 09.8 -30 54 SCO
PLNNB 15.0m 71"
NGC 6072 16 13.0 -36 14 SCO
PLNNB 3a 14.0m 50"X30" 17.5br
Haro 1-1 16 13.5 -34 36 SCO PLNNB 2 14.0m
2.5"X2.3"
IC 4599 16 19.4 -42 16 SCO
PLNNB 12.3m 16"X13" 16.2br
Abell 38 16 23.3 -31 45 SCO
PLNNB 4(2) 15.0m 154"X94" 20.0br
NGC 6153 16 31.5 -40 15 SCO
PLNNB 4 11.5m 25" 15.5br
PK346+8.1 16 34.1 -35 05 SCO
PLNNB <10"
He2-175 16 39.5 -36 35 SCO PLNNB 15.0m
11"X4"
Vd1-1 16 42.6 -38 55 SCO
PLNNB 12.0m <10"
PK345+4.1 16 46.7 -38 38 SCO
PLNNB 13.6m
PK347+5.1 16 48.9 -35 47 SCO
PLNNB <5"
PK344+3.1 16 49.5 -39 20 SCO
PLNNB 14.6m
PC 13 16 50.3 -30 18 SCO
PLNNB 14.1m
PK345+3.1 16 50.4 -39 08 SCO
PLNNB 14.6m
PK344+2.1 16 50.7 -40 03 SCO
PLNNB 14.8m
Haro 1-3 16 53.5 -42 39 SCO
PLNNB 2 13.8m 18"X14"
PK351+7.1 16 53.6 -31 41 SCO
PLNNB 1
Haro 1-5 16 57.4 -41 38 SCO
PLNNB 2 15.3m 5.8"X4.8"
PK349+4.1 17 01.1 -34 40 SCO
PLNNB 1 <5"
M2-5 17 02.3 -33 10 SCO
PLNNB 2 13.0m 5.1"
M1-19 17 03.8 -33 30 SCO
PLNNB 1 13.1m <10"
M2-6 17 04.3 -30 53 SCO
PLNNB 1 14.6m <10"
Haro 2-1 17 04.6 -33 59 SCO
PLNNB 2 14.0m 5.6" 12.8br
M2-7 17 05.2 -30 32 SCO
PLNNB 2 14.3m 8.1"X7.6"
PK347+1.1 17 05.2 -37 53 SCO
PLNNB 14.8m
IC 4637 17 05.2 -40 53 SCO
PLNNB 3 13.5m 21"X17" 12.6br
M2-8 17 05.5 -32 32 SCO
PLNNB 2 14.6m 4.6"X3.8"
He2-198 17 06.4 -44 13 SCO
PLNNB 4 13.0m 25"X15"
Haro 1-6 17 07.0 -42 41 SCO PLNNB 4 14.5m
14"X10"
PK345-1.1 17 10.5 -41 53 SCO
PLNNB 2 8.5"
NGC 6302 17 13.7 -37 06 SCO
PLNNB 6 12.8m 72"X30" 16.6br
M2-10 17 14.1 -31 20 SCO
PLNNB 2 15.0m 5"X3"
PK354+3.1 17 18.8 -31 39 SCO
PLNNB 14.1m
PK355+3.3 17 19.3 -31 11 SCO
PLNNB 13.3m
He2-207 17 19.5 -45 53 SCO
PLNNB 12.0m 40"X26"
H1-9 17 21.5 -30 21 SCO
PLNNB 1 <10"
NGC 6337 17 22.3 -38 29 SCO
PLNNB 4 12.3m 38"X28" 14.8br
PK355+2.3 17 24.4 -31 44 SCO
PLNNB 13.5m
PK355+2.2 17 24.7 -30 52 SCO
PLNNB 14.1m
PK356+2.1 17 25.3 -30 41 SCO
PLNNB 14.0m
Canon 1-3 17 26.3 -44 12 SCO
PLNNB 1 11.8m <5"
Haro 1-12 17 26.4 -35 02 SCO PLNNB 2 15.0m
8.7"X5.4"
Haro 1-13 17 28.5 -35 08 SCO PLNNB 4 15.0m
13"X11"
M4-4 17 28.8 -30 08 SCO
PLNNB 2 17.0m 6.6" 21.0br
PK357+2.7 17 30.8 -30 17 SCO
PLNNB 14.0m
PK357+2.6 17 31.1 -30 11 SCO
PLNNB 1
PK350-2.1 17 32.3 -37 57 SCO
PLNNB <25"
Longmore 16 17 35.7 -40 12 SCO
PLNNB 13.0m 83" 16.0br
Haro 1-26 17 36.5 -39 22 SCO
PLNNB 4 14.0m 23"X14"
PK346-6.1 17 39.3 -44 10 SCO
PLNNB <5"
Haro 1-28 17 42.9 -39 36 SCO PLNNB 2 13.1m
8.2"X7.6"
PK355-2.2 17 44.2 -34 17 SCO
PLNNB 1 <10"
M3-14 17 44.3 -34 07 SCO
PLNNB 2a 15.0m 10"X5"
Haro 1-30 17 45.1 -38 09 SCO
PLNNB 2 13.1m 5.6"X5.1"
IC 4663 17 45.5 -44 54 SCO
PLNNB 4 13.0m 14"X12" 14.0br
He2-275 17 45.6 -38 39 SCO
PLNNB <10"
PK355-2.4 17 45.7 -34 31 SCO
PLNNB 14.5m <5"
M1-26 17 46.0 -30 12 SCO
PLNNB 2 13.8m 4.5"X3.8" 12.1br
PK358-1.1 17 46.0 -31 04 SCO
PLNNB 3(2) 16.0m 14"X9"
PK355-2.3 17 46.1 -34 04 SCO
PLNNB 1 <5"
PK355-3.1 17 47.8 -34 08 SCO
PLNNB <10"
PK355-3.3 17 49.2 -34 23 SCO PLNNB <5"
Haro 2-26 17 49.8 -34 01 SCO PLNNB 2 14.6m
5.1"X4.0"
Haro 1-36 17 49.8 -37 02 SCO PLNNB <10"
M1-29 17 50.3 -30 35 SCO PLNNB 4(2) 13.5m
9.3"X7.4"
Haro 1-37 17 50.7 -39 18 SCO PLNNB 2 15.0m
9.9"X7.6"
Haro 1-38 17 50.8 -37 24 SCO PLNNB 2 15.0m
9.4"X5.3"
Hoffleit 2-1 17 51.2 -34 55 SCO
PLNNB 3 14.0m 11"X8"
PK359-1.2 17 51.3 -30 24 SCO
PLNNB 2 16.0m 4.5"
M4-7 17 51.7 -31 36 SCO
PLNNB 2 16.5m 4.9"X4.7"
PK359-1.3 17 52.1 -30 05 SCO
PLNNB 2 16.0m 5.3"
M2-16 17 52.6 -32 46 SCO
PLNNB 2 14.0m 6.2"X4.7"
M3-16 17 52.8 -30 50 SCO
PLNNB 2 15.5m 6.8"X5.5"
M1-30 17 53.0 -34 39 SCO
PLNNB <5"
PK357-3.3 17 53.3 -32 41 SCO
PLNNB 2 14.0m 9.6"X2.5" 21.0br
PK356-3.3 17 53.3 -33 56 SCO
PLNNB <5"
PK357-3.4 17 53.6 -32 59 SCO
PLNNB 1 <5"
Canon 2-1 17 54.6 -34 23 SCO
PLNNB 12.1m 3"X2" 14.0br
PK359-2.4 17 55.1 -31 12 SCO
PLNNB 3 5.3"X3.6"
PK359-2.3 17 55.6 -30 34 SCO
PLNNB 13.8m
Haro 2-30 17 56.3 -32 38 SCO PLNNB 2? 15.0m 11.1" 21.0br
PK359-3.1 17 56.4 -31 05 SCO PLNNB <5"
Haro 1-41 17 57.3 -34 10 SCO PLNNB 2 14.1m
13"X7"
Haro 1-42 17 57.4 -33 36 SCO PLNNB 14.3m
6.0"X5.7"
PK357-4.3 17 58.2 -33 48 SCO
PLNNB 1 <25"
M2-22 17 58.5 -33 29 SCO
PLNNB 2 13.1m 5.6"X5.0"
Haro 1-46 17 59.1 -32 22 SCO PLNNB 1 <10"
Haro 2-35 18 00.3 -34 28 SCO PLNNB 14.6m 10"
M3-53 18 24.1 -11 07 SCT
PLNNB 2 15.5m 6.1"X3.6"
M1-46 18 28.0 -15 33 SCT
PLNNB 4(2) 15.6m 11.5"X10"
Abell 44 18 30.2 -16 45 SCT
PLNNB 2 12.6m 63"X39"
Abell 45 18 30.3 -11 37 SCT
PLNNB 3b 12.8m 302"X281" 20.1br
M3-28 18 32.7 -10 06 SCT
PLNNB 2(3) 13.8m 10"X6"
PK21-0.2 18 33.3 -10 15 SCT
PLNNB 2 7.8"X6.6" 20.1br
M1-51 18 33.5 -11 07 SCT
PLNNB 3 13.0m 3.9"X3.0"
M1-52 18 34.0 -14 52 SCT
PLNNB 2 14.8m 7.2"X6.1"
M2-45 18 39.4 -04 20 SCT
PLNNB 2 14.1m 6.6" 21.0br
M1-57 18 40.4 -10 40 SCT
PLNNB 2 14.0m 9.3"X7.8"
M3-30 18 41.3 -15 34 SCT
PLNNB 4 16.2m 16.1" 17.8br
Perek 1-14 18 42.1 -06 41 SCT
PLNNB 2 15.6m 5.0"
M1-58 18 43.0 -11 07 SCT
PLNNB 2 12.3m 7.0"X5.8"
M1-59 18 43.4 -09 05 SCT
PLNNB 2 12.3m 4.8"X4.3"
M1-60 18 43.7 -13 45 SCT
PLNNB 1 12.3m
PK26-1.2 18 45.5 -06 57 SCT
PLNNB 2 3.3"X2.9"
M1-61 18 45.9 -14 28 SCT PLNNB 1 12.5m
<5"
Perek 1-15 18 46.4 -07 15 SCT
PLNNB 2(3b) 14.1m 5.3"X4.7"
Perek 1-16 18 47.6 -06 54 SCT
PLNNB 2b 14.0m 7.8"X7.3"
Perek 1-17 18 47.8 -09 09 SCT
PLNNB 3(2) 14.1m 8.9"X5.1"
Perek 1-18 18 48.8 -05 56 SCT
PLNNB 2a 14.0m 6.7"
Perek 1-19 18 49.7 -07 02 SCT
PLNNB 2 15.1m 5.9"X3.2"
Abell 49 18 53.5 -06 29 SCT
PLNNB 2c 16.1m 35"X33" 21.0br
VY 1-4 18 54.0 -06 26 SCT
PLNNB 1 13.3m
M4-11 18 54.3 -10 05 SCT
PLNNB 2 15.0m 22"X20"
IC 1295 18 54.6 -08 50 SCT
PLNNB 3b(2) 12.6m 102"X87" 15.0br
Perek 1-20 18 57.3 -06 00 SCT
PLNNB 4 15.0m 10.5"X8"
Perek 1-21 18 57.8 -05 28 SCT
PLNNB 4 16.0m 10"X8"
Shane 1 16 21.1 +00 17 SER PLNNB 12.8m 5"
14.6br
Abell 41 17 29.0 -15 13 SER PLNNB 3(2) 13.8m
16"X7" 15.8br
K2-5 17 54.4 -12 49 SER PLNNB 3 15.1m
30"X20"
PK13+4.1 17 59.0 -15 32 SER PLNNB 2 13.0m
5.0"X4.8"
PK15+3.1 18 07.5 -13 29 SER PLNNB 1 <10"
PK18+4.1 18 10.5 -10 29 SER PLNNB 11.6"
M3-25 18 15.3 -10 10 SER PLNNB 12.5m
4.3"X3.5"
M2-40 18 21.4 -06 02 SER PLNNB 2 14.0m
5.6"X4.5"
PC 19 18 24.7 +02 30 SER PLNNB 12.1m
K3-2 18 25.0 -01 31 SER PLNNB 14.5m
PK27+4.1 18 26.7 -02 43 SER PLNNB 1
K3-3 18 27.1 +01 15 SER PLNNB 3 14.6m
9.6"X9.0"
K3-4 18 31.0 +02 25 SER PLNNB 3b(2) 14.6m 12.5"X11"
K3-5 18 31.8 +04 05 SER PLNNB 2 15.0m
9.1"
PK30+3.1 18 35.4 +00 13 SER PLNNB 4
17"X15" 20.2br
M2-44 18 37.6 -03 06 SER PLNNB 4 13.5m
8"X7"
YM 16 18 54.8 +06 02 SER PLNNB 3b 14.1m
350"X265"
K1-17 19 03.6 +19 21 SGE
PLNNB 4 16.0m 45" 18.6br
M1-67 19 11.5 +16 52 SGE
PLNNB 3 15.5m 57" 11.1br
He2-430 19 14.0 +17 31 SGE PLNNB 15.0m
<10"
Abell 59 19 18.7 +19 34 SGE
PLNNB 3b 17.2m 94"X80"
PK53-1.1 19 35.3 +17 13 SGE
PLNNB 2 4.0"
PK55-1.1 19 40.4 +18 49 SGE
PLNNB 2 2.7"
PK54-2.1 19 41.5 +17 45 SGE
PLNNB 1 <10"
PK53-3.2 19 41.9 +16 45 SGE
PLNNB 10.8br
NGC 6879 20 10.4 +16 55 SGE
PLNNB 2a 11.0m 4.7"X4.1" 15.0br
He1-5 20 11.9 +20 19 SGE
PLNNB 3(2) 16.0m 28.8" 11.5br
NGC 6886 20 12.7 +19 59 SGE
PLNNB 2(3) 12.5m 4" 16.5br
IC 4997 20 20.1 +16 44 SGE
PLNNB 1 11.3m 2.0"X1.4" 13.6br
PK6+4.1 17 43.5 -21 10 SGR
PLNNB 2 4.0"X3.6"
M3-15 17 45.5 -20 58 SGR
PLNNB 2 14.5m 4.1"
Perek 1-9 17 45.6 -23 02 SGR
PLNNB 2 18.0m 15"X9" 21.0br
M2-15 17 46.9 -16 17 SGR
PLNNB 2 14.6m 6.1"X5.4"
Haro 2-22 17 47.6 -21 47 SGR PLNNB 2 15.0m
6.3"X6.0"
M1-28 17 47.6 -22 06 SGR PLNNB 3(6) 17.0m
24"X13"
Hubble 5 17 47.9 -30 00 SGR PLNNB 2?(6) 11.8m 19"X12"
PK5+2.1 17 48.1 -22 47 SGR
PLNNB 1
NGC 6439 17 48.3 -16 28 SGR
PLNNB 2a 13.0m 6.1"X5.1" 18.0br
PK6+2.1 17 48.6 -22 17 SGR
PLNNB 14.1m
Haro 2-24 17 48.6 -24 17 SGR
PLNNB 3 15.6m 6.1"X3.4"
PK4+2.1 17 49.0 -23 43 SGR
PLNNB 2 15.0m 4.6"X4.3"
NGC 6445 17 49.3 -20 01 SGR
PLNNB 3b(3) 13.0m 35"X30" 19.0br
The 4-5 17 50.4 -19 03 SGR
PLNNB 13.5m <10"
PK0-1.1 17 50.4 -29 25 SGR
PLNNB 2 16.0m 4.3"X3.3" 21.0br
Haro 2-25 17 51.0 -22 20 SGR
PLNNB 1 <7"
PK9+4.2 17 51.3 -18 47 SGR
PLNNB 14.3m
M2-17 17 52.1 -17 36 SGR
PLNNB 2 14.0m 7.3"X5.7"
PK6+2.3 17 52.4 -21 52 SGR
PLNNB 14.6m
PK0-1.2 17 52.6 -29 07 SGR
PLNNB 13.8m
M1-31 17 52.7 -22 22 SGR
PLNNB 1 13.0m 25"
PK6+2.4 17 53.6 -21 59 SGR
PLNNB 2 4.0"X3.6"
M2-19 17 53.8 -29 44 SGR
PLNNB 2 15.5m 7.2"X4.7"
M2-20 17 54.5 -29 36 SGR
PLNNB 1 13.5m 25" 17.0br
PK1-1.2 17 54.6 -28 13 SGR
PLNNB 16.0m
Hubble 6 17 55.1 -21 45 SGR
PLNNB 2 11.0m 6.6" 14.6br
PK0-2.2 17 55.3 -29 58 SGR
PLNNB 13.3m
PK9+2.1 17 56.0 -19 29 SGR
PLNNB 14.8m
PK1-1.3 17 56.0 -28 14 SGR
PLNNB 1
PK0-2.1 17 56.0 -29 12 SGR
PLNNB 14.3m
M1-32 17 56.3 -16 30 SGR
PLNNB 2 12.0m 8.0"X7.3"
The 4-10 17 57.2 -18 06 SGR PLNNB 13.3m <25"
PK0-2.5 17 57.8 -30 02 SGR
PLNNB 13.6m
M2-21 17 58.1 -29 45 SGR
PLNNB 1 13.6m 3" 16.2br
Haro 2-33 17 58.2 -31 08 SGR
PLNNB 2 14.3m 6.0" 21.0br
PK358-3.1 17 58.2 -31 43 SGR
PLNNB 2 3.7"
M3-19 17 58.3 -30 01 SGR
PLNNB 2 15.3m 5.4"X5.3"
Perek 2-11 17 58.5 -27 37 SGR
PLNNB 2 16.2m 6.4"X4.2" 21.0br
M3-20 17 59.3 -28 14 SGR
PLNNB 1 14.3m 4"
M3-48 17 59.9 -31 54 SGR
PLNNB 2 15.3m 7.3" 21.0br
PK11+2.1 18 00.2 -17 40 SGR PLNNB 13.1m
<5"
PK1-3.1 18 00.6 -29 22 SGR
PLNNB 1 <5"
Perek 2-12 18 01.2 -27 38 SGR
PLNNB 3 7.2"X3.4"
M1-34 18 01.4 -33 18 SGR
PLNNB 2 13.5m 13"X10"
M2-23 18 01.7 -28 26 SGR
PLNNB 1 12.3m 2"
PK358-5.1 18 01.7 -33 15 SGR
PLNNB 2 13.0m 9.9"X8.0"
M2-24 18 02.0 -34 28 SGR
PLNNB 2 14.6m 11"X4" 18.0br
M3-22 18 02.3 -30 14 SGR
PLNNB 2c 15.1m 7.2"X6.1"
M3-49 18 02.5 -35 13 SGR
PLNNB 4 14.8m 10.5"X9"
M3-21 18 02.5 -36 39 SGR PLNNB 11.6m <5"
13.5br
M2-25 18 02.8 -32 10 SGR
PLNNB 3 14.3m 12.5"
M2-26 18 03.2 -26 58 SGR
PLNNB 2a 13.8m 8.6"X8.2"
IC 4673 18 03.3 -27 06 SGR
PLNNB 4 13.0m 18"X12.5" 14.6br
M1-35 18 03.7 -26 44 SGR
PLNNB 2 14.6m 5.3"X5.0"
PK359-4.2 18 03.9 -31 18 SGR
PLNNB 1 14.1m 2"
H1-50 18 03.9 -32 42 SGR
PLNNB 14.5m 10"
M3-50 18 04.1 -34 29 SGR
PLNNB 2 15.8m 10.5"X9"
Haro 2-37 18 04.5 -28 38 SGR PLNNB 2 15.5m
6.2"X3.6"
PK356-6.2 18 04.5 -34 58 SGR PLNNB 4 15.3m
13.2"
M3-51 18 04.9 -32 54 SGR PLNNB 2 15.0m
12"X7"
NGC 6537 18 05.2 -19 51 SGR
PLNNB 2a(6) 12.0m 5" 19.5br
PK2-3.3 18 05.4 -28 22 SGR
PLNNB 1 <11"
PK4-2.1 18 06.0 -26 30 SGR
PLNNB 1 <25"
PK2-3.5 18 06.1 -28 41 SGR
PLNNB <3.3"
M2-29 18 06.7 -26 55 SGR
PLNNB 2 14.6m 5.8"X5.5"
Haro 1-54 18 07.1 -29 13 SGR
PLNNB 1 14.1m 2" 14.8br
M3-23 18 07.1 -30 34 SGR
PLNNB 2 15.0m 9.7"
PK1-4.1 18 07.2 -29 42 SGR PLNNB 1 <5"
PK5-2.1 18 07.9 -25 24 SGR
PLNNB 2 13.0m 10"X10"
PK1-4.2 18 07.9 -29 45 SGR
PLNNB 2 14.1m 3.2"X3.0"
M1-40 18 08.4 -22 17 SGR
PLNNB 2 13.8m 5.8"X4.5" 15.0br
Haro 2-40 18 08.4 -31 37 SGR
PLNNB 2 4.3" 21.0br
PK5-3.1 18 09.2 -26 03 SGR
PLNNB 1
M1-41 18 09.5 -24 12 SGR PLNNB 5 16.0m
8.4"X4.5"
Haro 1-57 18 09.8 -35 44 SGR PLNNB 2 14.0m
12.5"
PK358-6.1 18 09.9 -33 19 SGR PLNNB 12.0m
<10"
M1-42 18 11.1 -28 59 SGR PLNNB 4 13.3m
9.0"X7.4"
PK3-4.3 18 11.5 -27 46 SGR
PLNNB 2 14.3m 7.0"X5.0"
PK3-4.7 18 11.6 -28 22 SGR
PLNNB 11.0m 12"
M1-43 18 11.8 -18 46 SGR
PLNNB 2 15.0m 6.5"X4.3"
NGC 6565 18 11.9 -28 11 SGR
PLNNB 4 13.0m 10"X8" 19.5br
NGC 6563 18 12.0 -33 52 SGR
PLNNB 3a 13.0m 54"X41" 18.0br
Haro 2-42 18 12.4 -26 33 SGR
PLNNB 3b 16.7" 20.0br
PK4-4.1 18 12.4 -27 29 SGR
PLNNB 2 15.0m 4.0"X3.7"
Haro 2-41 18 12.4 -27 52 SGR PLNNB 4 14.5m
8.7"X6.8"
PK6-3.1 18 12.6 -24 50 SGR PLNNB 1
<25"
M2-30 18 12.6 -27 58 SGR PLNNB 1 13.1m
4"
H2-43 18 12.8 -28 20 SGR PLNNB 1 12.0m
<10"
M2-31 18 13.3 -25 30 SGR PLNNB 1 13.1m
<5"
PK359-6.1 18 13.3 -32 20 SGR PLNNB 1 <25"
Haro 2-44 18 13.7 -26 09 SGR PLNNB 2 14.1m
8.4"X8.1"
NGC 6567 18 13.8 -19 05 SGR
PLNNB 2a(3) 11.5m 11"X7" 15.0br
M4-9 18 14.3 -04 59 SGR
PLNNB 4 14.0m 46"X38" 19.7br
Haro 2-45 18 14.5 -24 44 SGR PLNNB 2 14.5m
4.9"X4.5"
PK2-5.1 18 14.6 -29 49 SGR PLNNB 11.5m
<10"
M2-32 18 14.9 -32 37 SGR PLNNB 1 14.0m
5"
M2-33 18 15.1 -30 16 SGR PLNNB 2 14.0m
4.5"X3.7"
PK1-6.1 18 15.4 -30 32 SGR PLNNB 14.0m
<10" 12.5br
M3-26 18 16.2 -27 15 SGR PLNNB 4 14.0m
7.7"X7.3"
SwSt 1 18 16.2 -30 52 SGR PLNNB 1 11.8m
<5"
NGC 6578 18 16.3 -20 27 SGR
PLNNB 2a 13.1m 8.5" 15.6br
M1-44 18 16.3 -27 05 SGR
PLNNB 2 13.6m 4.0"X3.8" 12.5br
PK2-6.2 18 16.3 -30 08 SGR
PLNNB 1 <5"
M2-34 18 17.3 -23 59 SGR
PLNNB 2 14.0m 12.5"X6"
M2-35 18 17.6 -31 57 SGR
PLNNB 1 14.8m 5"
Perek 1-12 18 17.7 -28 17 SGR
PLNNB 2 11.5"
M2-36 18 17.7 -29 08 SGR
PLNNB 2 13.0m 8.8"X5.2"
Perek 2-13 18 18.2 -25 38 SGR PLNNB 15.0m
6.9"X4.9"
Haro 1-64 18 18.4 -23 25 SGR PLNNB 2 14.0m
8.4"X6.9"
M2-37 18 18.6 -28 08 SGR PLNNB 3 14.0m
7.3"X7.1"
H2-46 18 18.7 -31 55 SGR PLNNB 1 15.0m
M2-38 18 19.4 -26 35 SGR PLNNB 4 15.0m
8.9"X7.0"
M2-39 18 20.1 -24 15 SGR PLNNB 1 14.8m
<9"
PK8-4.1 18 22.0 -24 11 SGR PLNNB 2
3.3"X3.2"
M2-42 18 22.6 -24 10 SGR PLNNB 2 13.3m
4.7"X3.2"
M2-41 18 22.6 -30 44 SGR PLNNB 4 15.8m
13"X12.5"
NGC 6620 18 22.9 -26 49 SGR PLNNB 2b 14.0m
5.3"X3.8" 16.0br
PK12-2.1 18 23.2 -19 17 SGR PLNNB 1 <10"
Haro 1-66 18 25.0 -25 42 SGR PLNNB 4 13.5m
8.5"X7.9"
Haro 1-67 18 25.1 -22 35 SGR PLNNB 2 15.0m
6.3"X5.1"
NGC 6629 18 25.7 -23 12 SGR
PLNNB 2a 10.5m 16"X14" 12.8br
VY 2-1 18 28.0 -26 07 SGR
PLNNB 1 13.1m 7"
M1-47 18 29.2 -21 47 SGR
PLNNB 2 14.0m 4.8"X4.6"
Canon 1-5 18 29.2 -31 30 SGR
PLNNB 11.8m <5"
M1-48 18 29.5 -19 06 SGR
PLNNB 2 13.0m 4.9"X4.7"
Perek 2-14 18 30.0 -19 41 SGR
PLNNB 2 14.3m 5.5"X4.6"
PK8-7.1 18 31.9 -24 47 SGR
PLNNB 14.1m <25"
PK5-8.1 18 32.5 -28 43 SGR
PLNNB 2 14.0m 16.9" 17.3br
NGC 6644 18 32.6 -25 08 SGR
PLNNB 2 12.1m 3" 15.8br
M1-50 18 33.4 -18 17 SGR PLNNB 2 15.0m
5.8"X5.3"
IC 4732 18 33.9 -22 39 SGR
PLNNB 1 13.3m 2" 16.6br
Perek 1-13 18 34.9 -22 43 SGR
PLNNB 2 15.5m 7.8"X7.4"
Allen 1 18 34.9 -27 07 SGR
PLNNB 16.0m 14"X13" 18.0br
M1-53 18 35.8 -17 36 SGR
PLNNB 2 13.1m 6.6"X5.6"
M1-54 18 36.2 -17 00 SGR
PLNNB 3 13.0m 17"X10"
PK11-6.1 18 36.6 -21 50 SGR
PLNNB <25"
M1-56 18 37.8 -17 05 SGR
PLNNB 1 13.5m <10"
M3-29 18 39.5 -30 41 SGR
PLNNB 2 13.1m 8.4"X8.1"
PK12-7.1 18 42.6 -21 17 SGR
PLNNB 12.0m <10"
M3-31 18 44.2 -19 54 SGR
PLNNB 1 14.1m <5"
He2-418 18 44.3 -30 19 SGR
PLNNB 14.0m 13"
M3-32 18 44.7 -25 20 SGR
PLNNB 2 14.0m 6.6"X5.3"
Peimbert 21 18 45.6 -20 35 SGR
PLNNB ?(3) 15.6m 14.9"X12"
IC 4776 18 45.8 -33 21 SGR
PLNNB 2a 12.5m 8"X6" 16.0br
PK11-9.1 18 46.5 -23 27 SGR
PLNNB 1 <5"
M3-33 18 48.2 -25 29 SGR
PLNNB 2 14.0m 5.9"X4.2"
M1-62 18 50.5 -22 35 SGR
PLNNB 2 13.0m 3.7"
M1-63 18 51.5 -13 11 SGR
PLNNB 2 13.1m 4.4"X4.0"
Hubble 7 18 55.6 -32 16 SGR
PLNNB 2 10.8m 4" 18.0br
Abell 51 19 01.1 -18 12 SGR
PLNNB 4 13.5m 64"X58" 15.3br
Hubble 8 19 05.6 -33 12 SGR
PLNNB 2 12.8m 2" 15.6br
DHW3 19 17.1 -18 02 SGR
PLNNB 15.6m 34"X29"
Abell 60 19 19.3 -12 16 SGR
PLNNB 2b 15.3m 88"X77" 18.0br
PK4-22.1 19 32.1 -34 24 SGR
PLNNB <10"
K2-7 19 40.5 -20 27 SGR
PLNNB 3b 13.1m 140" 18.7br
Abell 63 19 42.2 +17 05 SGR
PLNNB 2 14.0m 40" 15.1br
NGC 6818 19 44.0 -14 09 SGR
PLNNB 4 1 22"X15" 15.0br
Abell 65 19 46.6 -23 08 SGR
PLNNB 2a 13.1m 134"X74" 15.8br
Abell 66 19 57.6 -21 37 SGR
PLNNB 3b 14.1m 295"X241" 18.2br
Baade 1 03 53.5 +19 28 TAU
PLNNB 4 13.8m 38" 17.1br
NGC
1514 04 09.3 +30 47 TAU PLNNB 3(2)
10.8m 120"X90" 9.5br
Haro
3-29 04 37.3 +25 03 TAU PLNNB 13.6m
20" 17.5br
Haro
3-75 05 40.7 +12 21 TAU PLNNB 13.8m
14.1br
M1-5 05 46.9 +24 22 TAU PLNNB 1 14.6m
5"
IC
4699 18 18.5 -45 59 TEL PLNNB 2
12.0m 5" 15.1br
NGC
5844 15 10.7 -64 40 TRA PLNNB
12.0m 60"
NGC
5979 15 47.7 -61 13 TRA PLNNB
13.0m 8" 13.0br
He2-136 15 52.3 -62 31 TRA PLNNB 12.5m
<10"
He2-185 17 01.3 -70 07 TRA PLNNB <10"
Abell
28 08 41.6 +58 13 UMA PLNNB 2b
13.5m 268" 14.3br
M 97 11 14.8 +55 01 UMA
PLNNB 3a 11.0m 202"X196" 14.0br
He2-7 08 11.5 -48 43 VEL PLNNB 2 12.3m
25"
PB 2 08 20.8 -46 22 VEL PLNNB 13.6m
<10"
He2-11 08 37.1 -39 26 VEL PLNNB 14.5m
65"
Velghe 26 08 43.6 -46 06 VEL PLNNB 1 13.0m
<5"
He2-15 08 53.5 -40 04 VEL PLNNB 13.0m
20"
PB 3 08 54.1 -50 32 VEL PLNNB 13.6m
7"
He2-18 09 08.8 -53 19 VEL PLNNB 14.3m
12"X10"
NGC 2792 09 12.4 -42 26 VEL PLNNB 4 13.5m
13" 16.8br
He2-21 09 13.9 -55 28 VEL PLNNB 13.5m
<10"
PB 4 09 14.9 -54 53 VEL PLNNB 12.8m
14"X9"
PB 5 09 16.2 -45 29 VEL PLNNB 1 14.1m
<5"
PK275-3.1 09 18.1 -54 40 VEL PLNNB 5"
He2-28 09 22.1 -54 09 VEL PLNNB 14.3m
11"X9"
He2-29 09 24.8 -54 36 VEL PLNNB 13.3m
20"
NGC 2899 09 27.1 -56 06 VEL PLNNB 12.1m 2.0'
15.8br
Perek 2-4 09 30.9 -53 09 VEL PLNNB 14.0m <10"
PK274+2.1 09 41.2 -49 23 VEL PLNNB <10"
PK274+2.2 09 41.6 -49 59 VEL PLNNB 5"
He2-37 09 47.5 -48 58 VEL PLNNB 14.0m
30"
NGC 3132 10 07.0 -40 26 VEL PLNNB 4(2) 8.1m
84"X53" 10.1br
PK278+5.1 10 13.3 -50 20 VEL PLNNB <25"
PK282+3.1 10 31.5 -53 33 VEL PLNNB 14.8m 30"
Mayall 60 10 31.6 -55 20 VEL PLNNB 13.3m 8"
He2-50 10 34.3 -53 41 VEL PLNNB 14.6m
9"
Peimbert 1-1 10 38.6 -56 47 VEL PLNNB 8.6m <5"
He2-53 10 39.6 -57 07 VEL PLNNB 13.8m
5"
PK285+2.1 10 41.3 -56 10 VEL PLNNB 14.6m 9"
He2-55 10 48.8 -56 03 VEL PLNNB 12.6m
18"
Abell 36 13 40.6 -19 53 VIR
PLNNB 3b(3a) 13.0m 478"X281" 11.5br
IC 972 14 04.4 -17 14 VIR
PLNNB 2c 14.8m 47" 17.2br
Abell 54 19 08.7 +22 59 VUL PLNNB 2b 17.1m
67"X47"
Abell 57 19 17.1 +25 37 VUL
PLNNB 3b 16.6m 40"X34" 17.6br
He2-432 19 23.5 +21 08 VUL
PLNNB 15.5m <10"
PK55+2.2 19 23.8 +21 07 VUL
PLNNB 2(3) 5.5"
K3-34 19 24.1 +25 19 VUL
PLNNB 16.7m 11"X9"
PK55+2.3 19 26.7 +21 09 VUL
PLNNB 5"
He2-437 19 32.9 +26 53 VUL
PLNNB 6 16.6m 15.5"X3"
M1-71 19 36.5 +19 42 VUL
PLNNB 13.8m 4.7"X3.1"
PK60+1.1 19 38.2 +25 16 VUL
PLNNB <25"
PK56-0.1 19 39.6 +20 19 VUL
PLNNB 2 3.4"
He2-446 19 44.1 +23 27 VUL
PLNNB <5"
PK57-1.1 19 45.4 +21 20 VUL
PLNNB <25"
PK60-0.1 19 46.2 +24 11 VUL
PLNNB 6.8"
He1-3 19 48.5 +22 09 VUL
PLNNB 2 8"
M2-48 19 50.5 +25 55 VUL
PLNNB 3 14.1m 9.6"X5.8"
NGC 6842 19 55.0 +29 17 VUL
PLNNB 3b 13.1m 52.8"X48" 14.5br
M 27 19 59.6 +22 43 VUL
PLNNB 3(2) 7.3m 480"X340" 14.1br
Abell 68 20 00.2 +21 43 VUL
PLNNB 3 16.6m 40"X37" 13.3br
K3-53 20 03.4 +27 00 VUL
PLNNB 16.0m <5"
PK68-2.1 20 13.9 +29 34 VUL
PLNNB <10"
He1-6 20 17.3 +25 22 VUL
PLNNB 3(2) 14.0m 18"X13"
Peimbert 24 20 19.6 +27 00 VUL
PLNNB 13.6m 5"
Abell 74 21 16.8 +24 10 VUL
PLNNB 2 12.1m 871"X791" 17.3br