| Off the Deep End – 10 Challenging Observing Projects |
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| by Steve Gottlieb |
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| Sharpless
HII regions |
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|
| Sh 2-11 |
17 24.7 |
-34 12 |
50x40 |
|
Sco |
|
|
Brightest section of
NGC 6357 is an elongated strip with a close double at S edge. Faint open cluster Pismis 24 to S. |
|
| Sh 2-84 |
19 49.0 |
+18 23 |
15x3 |
|
Sge |
|
|
"Little
California Nebula" is a faint, 4' shallow arc between 2 mag 8.5
stars. Located 25' ESE of mag 3.7
Delta Sagittae. |
|
| Sh 2-105 |
20 12.1 |
+38 21 |
20x10 |
|
Cyg |
|
|
Crescent Nebula (NGC
6888) is a huge 18'x11' oval, with knots and tendrils, in a rich Cygnus star
field. Use OIII filter. |
|
| Sh 2-108 |
20 22.2 |
+40 15 |
|
|
Cyg |
|
|
IC 1318 is an
extremely large and faint HII complex surrounding Gamma Cyg. Use very low x and H-beta or UHC filter. |
|
| Sh 2-112 |
20 33.9 |
+45 39 |
9x7 |
|
Cyg |
|
|
Very irregular,
relatively easy HII region, 10' diameter, surrounding mag 9 star. |
|
| Sh 2-117 |
20 59.3 |
+44 31 |
120x100 |
|
Cyg |
|
|
Use low x & OIII
filter to view the North American nebula.
Highest contrast around "Gulf of Mexico" and
"Baja" region |
|
| Sh 2-125 |
21 53.5 |
+47 16 |
12x12 |
|
Cyg |
|
|
The Cocoon Nebula (IC
5146) is a large, milky glow surrounding 2 mag 9 stars. Use a H-beta filter. |
|
| Sh 2-132 |
22 19.1 |
+56 05 |
30x20 |
|
Cep |
|
|
With an OIII filter
this huge HII region appears roughly 20'x15', elongated E-W. |
|
| Sh 2-157 |
23 16.0 |
+60 28 |
60x50 |
|
Cas |
|
|
Huge, faint curving
arc, ~35'x8', extended N-S. Open
cluster Mrk 50 off W side. Use OIII filter. |
|
| Sh 2-162 |
23 20.7 |
+61 12 |
15x8 |
|
Cas |
|
|
The Bubble Nebula (NGC
7635) is a low surf br HII region, curves mostly north of a mag 8.5 star.
Located 35' SW M52. |
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|
|
|
| Adventures
in Deep Space - Sharpless HII |
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|
|
| Sharpless Images |
|
|
|
|
|
| Sharpless
Catalogue in pdf format |
|
| How
to Observe Cosmic Bubbles - Feb '06 Astronomy - Steve Gottlieb |
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| Extragalactic
Globulars |
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|
| WLM-1 |
00 01.8 |
-15 28 |
|
|
Cet |
|
|
The brightest gc in
the Wolf-Lundmark-Melotte system is a mag 16 "star" on the W side
of the galaxy. |
|
| M31-G1 |
00 32.8 |
+39 35 |
10" |
13.7 |
And |
|
|
Brightest gc in M31,
2.5° SW of center. Out of focus
"star" forming a small triangle with 2 mag 12/13 stars. |
|
| M31-G78 |
00 41.0 |
+41 14 |
3.2" |
14.2 |
And |
|
|
"Soft" mag
14.5 star located 30' W of the core of M31.
This gc is the 2nd or 3rd brightest in M31. |
|
| M31-G76 |
00 41.0 |
+40 36 |
3.6" |
14.3 |
And |
|
|
Visible as a mag 14.2
"star" in a small "W" asterism and near the SW tip of
M31. Similar brightness to G78 above. |
|
| M33-C39 |
01 34.8 |
+30 22 |
|
15.9 |
Tri |
|
|
Brightest gc in M33
though only 16th mag and stellar.
Needs a finder chart to pin down location. |
|
| NGC 1049 |
02 39.8 |
-34 15 |
1.3 |
12.6 |
For |
|
|
This small 12th
magnitude gc is the brightest of 5 in the Fornax Dwarf. |
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| Fornax-4 |
02 40.1 |
-34 32 |
0.8 |
13.6 |
For |
|
|
Third brightest gc in
the Fornax Dwarf, roughly mag 13.5 and very small. |
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| Fornax-5 |
02 42.3 |
-34 06 |
1.0 |
13.4 |
For |
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|
Second brightest gc in
the Fornax Dwarf and similar to Fornax-4. |
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|
| Hodge
Atlas of the Andromeda Galaxy |
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| Observations
of M31 Globulars |
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| Extragalactic
Globulars |
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| Observations
of M33 Globulars |
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| Palomar/Obscured
Globulars |
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| Palomar 5 |
15 16.1 |
-00 07 |
6.9 |
11.8 |
Ser |
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|
Extremely low surface
brightness gc located 30' south of mag 5.6 4 Serpentis. |
|
| Djorgovski 2 |
18 01.8 |
-27 50 |
3.5 |
9.9 |
Sgr |
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|
Recently discovered gc
just 21' WNW of open cluster NGC 6520 and dark nebula B86! |
|
| Palomar 7 |
18 10.7 |
-07 12 |
7 |
10.3 |
Ser |
|
|
IC 1276 is an
irregular 3' glow with a mag 13.5 star at the W edge. Has a mottled, patchy
appearance. |
|
| Palomar 8 |
18 41.5 |
-19 50 |
4.7 |
11.2 |
Sgr |
|
|
One of the easier
Palomar globulars, roughly 2' in diameter.
A large scope may partially resolve. |
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| Palomar 9 |
18 55.1 |
-22 42 |
3.9 |
9.2 |
Sgr |
|
|
NGC 6717 is a small,
faint glow easy to locate just 2' S of mag 5 Nu 2 Sagitarii! |
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| Terzan 7 |
19 17.7 |
-34 40 |
2.6 |
12 |
Sgr |
|
|
Low surf br glow with
no central concentration. This gc may
have been a member of the Sagittarius Dwarf Spheroidal gx |
|
| Arp 2 |
19 28.7 |
-30 21 |
2.5 |
12.3 |
Sgr |
|
|
Extremely low surf br
glow, 2' diameter in a rich star field.
Very difficult to pick out. |
|
| Terzan 8 |
19 41.7 |
-34 00 |
5.0 |
12.4 |
Sgr |
|
|
Very faint, round
glow, just 1.0'-1.5' diameter. Lies
close to Sagittarius Dwarf Spheroidal gx, discovered in 1994. |
|
| Palomar 11 |
19 45.2 |
-08 00 |
8.0 |
9.8 |
Aql |
|
|
This Palomar gc
appears as a diffuse, irregular glow 4' SSE of a mag 9 star. Try to resolve at high power. |
|
| Palomar 12 |
21 46.5 |
-21 15 |
2.9 |
11.7 |
Cap |
|
|
Irregular 3' glow
close NNW of 3 mag 12 stars. May have
been captured from the Sagittarius Dwarf Spheroidal gx |
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|
|
|
| Observations
of Palomar Globulars |
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|
|
| Palomar Globs -
Images and Sketches |
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| Observations
of Obscure Globulars |
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|
|
| A
Tour of Obscure Summer Globulars - Aug '02 S&T - Steve Gottlieb |
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| Local
Group Dwarf Galaxies |
|
| WLM System |
00 01.9 |
-15 27 |
11.5x4.0 |
10.6 |
Cet |
|
|
WLM system is a
difficult, very low contrast galaxy spread out over 10'x5', elongated N-S
without central concentration |
|
| IC 10 |
00 20.4 |
+59 18 |
6.3x5.1 |
11.0 |
Cas |
|
|
Large, low surf br
hazy region with no concentration and a mag 13 star superimposed. Only 4° from the galactic plane. |
|
| NGC 147 |
00 33.2 |
+48 30 |
13.2x7.8 |
9.5 |
Cas |
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|
Satellite system of
M31 with a very low surface brightness |
|
| NGC 185 |
00 39.0 |
+48 20 |
11.7x10.0 |
9.2 |
Cas |
|
|
Relatively bright and
large satellite system of M31. Its
brightest gc is only mag 16.5 and located 8' N of center. |
|
| IC 1613 |
01 04.8 |
+02 07 |
16.2x14.5 |
9.2 |
Cet |
|
|
The Cetus system
appears as an irregular hazy region with a brighter section to the NE . |
|
| Ursa Minor Dwarf |
15 08.8 |
+67 11 |
41x26 |
10.9 |
UMi |
|
|
Very tough dwarf
elliptical with extremely low surf br.
Look for subtle brightening in a low power field. |
|
| Draco Dwarf |
17 20.2 |
+57 55 |
35.5x24.5 |
10 |
Dra |
|
|
The Draco Dwarf is a
large, very low surf bright member of the Local Group, ~15'x10', with several stars superimposed |
|
| SagDIG |
19 30.0 |
-17 41 |
3.2x1.5 |
15 |
Sgr |
|
|
The Sagittarius Dwarf
Irregular is a difficult 3' roundish glow nestled in a rich Milky Way
field. Very difficult to identify. |
|
| NGC 6822 |
19 45.0 |
-14 48 |
15.5x13.5 |
8.8 |
Sgr |
|
|
Barnard's Galaxy has a
low, irregular surf br, ~14' in length.
Use OIII filter to search for 2 small HII regions at N end. |
|
| Pegasus Dwarf |
23 28.6 |
+14 45 |
5.0x2.7 |
12.6 |
Peg |
|
|
The Pegasus dwarf is
just a very low surf br hazy region with no concentration, roughly 4'x2'. |
|
|
|
|
| SEDS page on Local Group
Galaxies |
|
|
|
| Barnard's
Galaxy in depth |
|
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|
|
| Observing the Local Group of Galaxies -Tom Polakis in
"Galaxies and the Universe" |
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|
|
| Compact
galaxy groups |
|
|
| Hickson 61 |
12 12.3 |
+29 11 |
|
12.2 |
Com |
|
|
"The Box"
consists of 4 galaxies - NGC 4169, 4173, 4174, 4175 - forming a rectangle
with sides 2.5' by 1.5'. |
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| Hickson 68 |
13 53.4 |
+40 17 |
|
11 |
CVn |
|
|
One of the best
Hicksons contains NGC 5350, 5353, 5354, 5355, 5358. Easy to locate 5' SE a mag 6.5 star. |
|
| Seyfert's Sextet |
15 59.2 |
+20 46 |
|
14.3 |
Ser |
|
|
Seyfert's Sextet is
NGC 6027, an extremely compact group!
Use high power to resolve 3 individual members. |
|
| Hickson 82 |
16 28.4 |
+32 51 |
|
13.6 |
Her |
|
|
Hickson 82 consists of
the trio NGC 6161, 6162, 6163 within 2.7'.
A 4th 16 mag galaxy is close to 6161. |
|
| Shakhbazian 16 |
16 49.2 |
+53 25 |
|
14.6 |
Dra |
|
|
5 extremely faint mag
15-16 galaxies in a 3.5' chain. View
is severely hampered by a mag 9 star just 2' NE! |
|
| Shakhbazian 166 |
16 52.8 |
+81 38 |
|
14.9 |
UMi |
|
|
Remarkable group of 5
or more extremely faint galaxies in a 7' chain. Located 30' SE mag 4.2 Epsilon Ursa Minoris |
|
| Hickson 86 |
19 52.1 |
-30 49 |
|
13.1 |
Sgr |
|
|
ESO
461-007 is the brightest of 4 galaxies within 3'. Use high power to resolve. |
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| Hickson 90 |
22 02.1 |
-31 59 |
|
11.4 |
PsA |
|
|
Bright quartet
containing the interacting system NGC 7174 and 7176, along with NGC 7172 and
7173. |
|
| Stephan's Quintet |
22 36.1 |
+33 57 |
|
12.6 |
Peg |
|
|
A 6" can resolve
3 gxs in Stephan's Quintet and a 10" or 11" may resolve all 5
members. Located 30' SSW of N7331. |
|
| Hickson 97 |
23 47.4 |
-02 18 |
|
12.9 |
Psc |
|
|
Quartet of IC galaxies
with brightest member IC 5357 . Other
members include IC 5351, 5356, 5359. |
|
|
|
|
| Ray Cash's compilation of
Hickson observations |
|
|
| Observations
of Interesting Hickson Groups |
|
| Observations of
Shakhbazian Compact Groups of Compact Galaxies |
|
| Exploring
Hickson Compact Groups - Mar '99 S&T - Steve Gottlieb |
|
|
|
|
| Arp
interacting pairs |
|
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| Arp 144 |
00 06.4 |
-13 25 |
0.9x0.5 |
13.9 |
Cet |
|
|
Double system
containing elongated NGC 7828 and an extremely compact companion, NGC 7829
just off SE end. |
|
| Arp 112 |
00 01.4 |
+31 26 |
1.2x0.9 |
13.3 |
Peg |
|
|
Arp 112 consists of a
close interacting pair of small galaxies, NGC 7804 and 7805, less than 1'
between centers. |
|
| Arp 84 |
13 58.6 |
+37 26 |
2.9x1.5 |
11.4 |
CVn |
|
|
NGC 5394 and 5395 form
a contact pair. Look for a very faint
dust lane and arm on the W side of NGC 5395 . |
|
| Arp 199 |
14 17.0 |
+36 34 |
0.9x0.9 |
13.4 |
Boo |
|
|
Consists of NGC 5545,
a very elongated streak, with a very small companion (NGC 5544) attached at
the SW end. |
|
| Arp 90 |
15 26.1 |
+41 41 |
1.8x0.7 |
12.2 |
Boo |
|
|
Nearly merged double
system with NGC 5929 and 5930 in contact (just 34" separation between
centers). |
|
| Arp 91 |
15 34.5 |
+15 12 |
1.7x1.3 |
12.1 |
Ser |
|
|
Bright double system
forms a striking double with NGC 5953 and 5954 attached at NE edge, just
46" between centers. |
|
| Arp 293 |
16 58.5 |
+58 56 |
1.3x1.2 |
13.3 |
Dra |
|
|
NGC 6286 is the
brighter edge-on with a smaller companion, NGC 6285, just 1.5' NW. |
|
| Arp 81 |
18 13.0 |
+68 21 |
2.1x0.8 |
13.1 |
Dra |
|
|
Double galaxy in a
common envelope consisting of NGC 6621 and 6622 just 40" between
centers. |
|
| Arp 93 |
22 28.6 |
-24 50 |
2.3x1.4 |
11.9 |
Aqr |
|
|
NGC 7285 is the NE
member of a double system with NGC 7284. The close pair is just 30"
between centers. |
|
| Arp 284 |
23 36.2 |
+02 09 |
1.9x1.4 |
12.5 |
Psc |
|
|
Just 4' NW of a mag
5.7 star is a 1.8' pair with brighter NGC 7714 and a faint edge-on, NGC 7715. |
|
| Arp 86 |
23 47.1 |
+29 29 |
0.8x0.5 |
12 |
Peg |
|
|
This is a M51-type
system with brighter gx NGC 7753 and fainter NGC 7752 2' SW attached at the
end of a spiral arm. |
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|
|
|
| http://nedwww.ipac.caltech.edu/level5/Arp/frames.html |
|
| Dennis Webb's Arp site |
|
|
|
|
|
| Martin Schoenball - images,
sketches and observing ntoes |
|
| Arp
Sampler with notes from Steve Gottlieb |
|
|
|
| Ray Cash's observations
of 100 Brightest Arps |
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|
| Abell
Galaxy Clusters |
|
|
| Abell 262 |
01 52.7 |
+36 09 |
120 |
13.3 |
And |
|
|
Relatively loose Abell
with over 50 galaxies visible in an 18-inch.
Core includes NGC 703, 704, 705, 708, 709, 710. |
|
| Abell 347 |
02 25.8 |
+41 53 |
40 |
13.3 |
And |
|
|
Brightest members NGC
906, 910, 911, 912 strung out on a 20' string. Located 30' SW of NGC 891 |
|
| Perseus GXCL |
03 18.6 |
+41 31 |
30 |
12.5 |
Per |
|
|
Rich Perseus cluster
with brightest gx NGC 1275, lies in a rich Milky Way field. 300 galaxies observed by Albert Highe |
|
| Hydra I GXCL |
10 36.8 |
-27 32 |
|
|
Hya |
|
|
One of the nearest and
easily viewed rich clusters. Core
includes NGC 3308, 3309, 3311, 3312, 3314, 3316. |
|
| Leo GXCL |
11 44.5 |
+19 50 |
30 |
13.5 |
Leo |
|
|
One the richest
clusters for amateurs. Core incudes
NGC 3837, 3840, 3841, 3842, 3844, 3845, 3851. |
|
| Coma I GXCL |
12 59.8 |
+27 59 |
120 |
13.3 |
Com |
|
|
The richest cluster
for amateurs. Center on the two
brightest members, NGC 4872 and 4889 and then enjoy the view. |
|
| Cor Bor GXCL |
15 22.7 |
+27 43 |
30 |
15.6 |
CrB |
|
|
At 1 billion light
years, the most distant cluster visible in an 18-inch scope and one of the
most challenging! |
|
| Hercules GXCL |
16 05.1 |
+17 45 |
40 |
13.8 |
Her |
|
|
Rich, irregular
cluster, ~500 million l.y. Includes
NGC 6040, 6041, 6042, 6043, 6045, 6047, 6050, 6054. |
|
| Abell 2197 |
16 28.2 |
+40 54 |
60 |
13.9 |
Her |
|
|
Includes NGC 6146,
6160 and 6173 as well as 6145, 6147, 6150, 6174, 6175, 6180, 6184. |
|
| Abell 2199 |
16 28.6 |
+39 31 |
40 |
13.9 |
Her |
|
|
Swarm of faint,
dimunitive galaxies surrounding giant cD galaxy NGC 6166. |
|
| Abell 4038 |
23 47.7 |
-28 08 |
|
12.6 |
Scl |
|
|
Brightest member, IC
5358, located 16' W of Delta Scl (V = 4.5).
Nearby is IC 5353, IC 5354 and PGC 72436 |
|
|
|
|
| Best
of the Abell Galaxy Clusters from Adventures in Deep Space |
|
| Saguaro
Astronomy List and observations of
Abell Clusters |
|
| Andreas Domenico survey
of Abell Galaxy Clusters |
|
|
| Albert Highe's survey of Abell
426 |
|
|
|
| On the Edge - The Corona Borealis Galaxy Cluster - May '05
S&T - Steve Gottlieb |
|
| Exploring the Pisces-Perseus Supercluster - Jan '01 S&T -
Steve Gottlieb |
|
|
|
|
| HII
regions in External Galaxies |
|
| NGC 55 |
00 14.9 |
-39 12 |
|
|
Scl |
|
|
Near the
"core" of NGC 55 are 2 small HII knots. More faint knots are along the fainter E
end. |
|
| NGC 253 |
00 47.6 |
-25 17 |
|
|
Scl |
|
|
Remarkable dust
structure and mottling, particularly on the SW extension where 3 faint HII
knots are visible. |
|
| NGC 604 |
01 34.5 |
+30 47 |
1.9x1.2 |
|
Tri |
|
|
Bright HII region on
NE end of M33. A dozen more HII regions incl NGC 588, 592, and 595. |
|
| NGC 2366 |
07 28.9 |
+69 13 |
0.4 |
|
Cam |
|
|
At the SW end of the
low surf bright gx NGC 2366, is a very bright HII knot , ~15" in
size. Try a UHC filter. |
|
| NGC 2404 |
07 37.1 |
+65 42 |
|
|
Cam |
|
|
Brightest of several
HII regions in NGC 2403. Located close E of core along northern spiral arm,
1.5' from the center. |
|
| M108 |
11 11.5 |
+55 40 |
|
|
Cam |
|
|
A few brighter patches
or knots are visible along the major axis of M108 with a prominent HII knot
along the W side. |
|
| NGC 4401 |
12 25.9 |
+33 32 |
|
|
CVn |
|
|
Brightest
of several HII knots in NGC 4395, located ~2' SE of the ill-defined core.
Appears as an irregular 25" knot. |
|
| NGC 4449 |
12 28.2 |
+44 06 |
|
|
CVn |
|
|
Several giant HII
regions are visible, the brightest is a well-defined patch on the N edge of
the gx, 1.5' from the center. |
|
| NGC 4861 |
12 59.0 |
+34 51 |
0.35x0.30 |
|
CVn |
|
|
High surf br 15"
knot at the SSW end of NGC 4861. Appears more prominent than the low surface
brightness galaxy! |
|
| NGC 5471 |
14 04.5 |
+54 24 |
0.9x0.7 |
|
UMa |
|
|
Highest surf br of
many HII regions in M101 on NE end. Also NGC 5447, 5449, 5451, 5453, 5455,
5458, 5461, 5462 |
|
| IC 1308 |
19 45.1 |
-14 43 |
1.0x0.9 |
|
Sgr |
|
|
Following of 2 HII
regions at the N end of Barnard's galaxy. A mag 12 star lies 2' SE. Mild
contrast gain with OIII filter. |
|
|
|
|
| HII
regions in Barnard's Galaxy |
|
|
|
|
| HII
Regions Galore in M101 -- Aug '04 S&T -- Steve Gottlieb |
|
| Images of HII regions -
enter NGC 598, NGC 5457, NGC 2403, NGC 4861, NGC 2366, NGC 4395 |
|
|
|
|
| Ancient,
Giant Planetaries |
|
| EGB 1 |
01 07.2 |
+73 33 |
300"x180" |
|
Cas |
|
|
Challenging planetary
involved with a group of faint stars.
Use an OIII filter and low power. |
|
| HFG 1 |
03 03.8 |
+64 54 |
523" |
12 |
Cas |
|
|
This huge, ancient pn
has an extremely low surf br, perhaps 8' in diameter. |
|
| HDW 2 |
03 11.0 |
+62 48 |
340" |
|
Cas |
|
|
Large, very low
surface brightness glow surrounding 3 mag 11 stars, ~4' in diameter. Use OIII filter and low power. |
|
| Abell 39 |
16 27.5 |
+27 54 |
170" |
12.9 |
Her |
|
|
Relatively bright
Abell planetary at least 2.5' in diameter!
Use an OIII filter. |
|
| Sh 2-68 |
18 25.0 |
+00 52 |
475"x330" |
11.2 |
Ser |
|
|
Huge low surface
brightness glow, perhaps 5'-6' in diameter with an OIII filter. |
|
| Sh 2-71 |
19 02.0 |
+02 09 |
124"x75" |
12.3 |
Aql |
|
|
Large, interesting PN
with an OIII filter. Faint extension
on S side and irregularities in the rim. |
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| Abell 61 |
19 19.2 |
+46 15 |
201" |
13.5 |
Cyg |
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Large Abell pn spans
2.5'-3.0' in diameter and irregularly lit. Situated in a rich Milky Way
field. |
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| Abell 65 |
19 46.6 |
-23 09 |
134"x34" |
13.8 |
Sgr |
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Relatively bright
Abell pn, noticeably elongated NW-SE, appears similar to a low surf br gx. |
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| Abell 72 |
20 50.1 |
+13 33 |
134"x121" |
12.7 |
Del |
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Large, 2' disc with a
mag 8 star just off the WSW edge! |
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| Jones 1 |
23 35.9 |
+30 28 |
314" |
12.1 |
Peg |
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Huge annular planetary
with 2 brighter arcs in the rim along the NNW and SSE sides giving a
horseshoe shape. |
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| Abell 84 |
23 47.8 |
+51 24 |
147"x114" |
13 |
Cas |
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Look for a 2' disc
with an OIII filter with a star embedded on the E side. |
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| Abell
Planetaries - lists, images, notes from Steve Gottlieb |
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| Eric
Honeycutt's Observations of Abell PN |
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| Jens Bohle survey of
giant planetaries (in German) |
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| The
Best Abell Planetary Nebulae - May '02 S&T - Eric Honeycutt |
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| Quasars |
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| APM 08279+5255 |
08 31.7 |
+52 45 |
Stellar |
16.0 |
Lyn |
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This
mag 16 "star" is a superluminous QSO at a redshift of z = 3.9. Distance of ~12 billion l.y! |
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| Q0957+561 |
10 01.3 |
+55 54 |
Stellar |
16.5 |
UMa |
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Gravitationally lensed
twin quasars is 15' NNW NGC 3079.
Components mag 16.5 and 16.7, separated by just 6". |
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| HS 1046+8027 |
10 50.6 |
+80 12 |
Stellar |
15.0 |
Dra |
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Relatively bright and
nearby quasar (z = 0.12) discovered in 1999 and visible as a mag 15.0
"star". |
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| Mrk 205 |
12 21.7 |
+75 19 |
Stellar |
14.5 |
Dra |
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Markarian 205 is a
14.5-15 "star" 1' S of NGC 4319.
Arp redshift controversy with possible bridge to NGC 4319. |
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| 3C 273 |
12 29.1 |
+02 03 |
Stellar |
12.9 |
Vir |
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Brightest quasar,
relatively nearby at ~2 billion l.y.
Appears as a mag 13 star in a triangle with mag 13.5 and 15 stars |
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| SBS 1425+606 |
14 26.9 |
+60 26 |
Stellar |
15.8 |
UMa |
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Very distant mag 15.8 quasar (z = 3.165!) at a distance
of roughly ~11.6 billion l.y. |
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| PG 1634+706 |
16 34.5 |
+70 32 |
Stellar |
14.7 |
Dra |
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Mag 14.7
"star" 1.6' SE of a mag 13 star. This is a luminous, distant qsr
with z = 1.34 (~8.9 billion l.y.) |
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| PG 1718+481 |
17 19.6 |
+48 04 |
Stellar |
14.6 |
Her |
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Mag 14.5 qsr at z =
1.08 and a light travel time of ~8 billion l.y. Forms S vertex of a small triangle with 2
mag 13 stars. |
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| HS 1946+7658 |
19 44.9 |
+77 06 |
Stellar |
15.9 |
Dra |
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Superluminous mag 16
qsr at a distance of ~11.5 billion l.y.
A nearby mag 16 star confuses the identification. |
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| PHL 1811 |
21 55.0 |
-09 22 |
Stellar |
14.0 |
Cap |
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Recently discovered
qsr (2001) is the 2nd brightest known at B = 13.9. At z = .19 is 20% more distant than 3C 273. |
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| Catalogue of Quasars |
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| Observing
the Double Quasar |
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